HIV Testing and Thyroid Disorders
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Questions and Answers

What is the primary purpose of the enzyme-linked immunosorbent assay (ELISA) in HIV testing?

  • Detect a general antibody response to HIV (correct)
  • Detect specific HIV proteins
  • Indicate the stage of HIV infection
  • Detect the presence of HIV mRNA

What is the recommended steroid dosage for a patient currently on steroids who is expected to experience post-op pain?

  • Double the daily dose on the day of the procedure and the next day (correct)
  • No steroids administered at all
  • Regular dose on day of procedure only
  • Half the normal dose on the day of the procedure

What indicates that a patient is considered HIV positive based on testing?

  • One positive PCR and one positive Western blot
  • One positive ELISA and one positive Western blot
  • Only positive PCR results
  • Two positive ELISA and one consecutive Western blot (correct)

Which hormone does the thyroid gland NOT produce?

<p>Insulin (C)</p> Signup and view all the answers

What CD4 count is considered normal for adults?

<p>600 cells/mm3 or higher (A)</p> Signup and view all the answers

What condition is characterized by a deficiency of thyroid hormones leading to physical and mental development issues in infants?

<p>Cretinism (D)</p> Signup and view all the answers

What does a CD4:CD8 ratio that is low indicate?

<p>Immune suppression (C)</p> Signup and view all the answers

What should be done if a patient has stopped regular steroid usage for more than two weeks before a surgical procedure?

<p>No steroid supplementation is needed (D)</p> Signup and view all the answers

Which statement is true regarding the p24 antigen and antibodies in HIV testing?

<p>p24 antigen indicates active viral replication (B)</p> Signup and view all the answers

What is a potential consequence of a heart transplant recipient being on immunosuppressive drugs?

<p>Increased susceptibility to infections (D)</p> Signup and view all the answers

What triggers the production of T3 and T4 in the thyroid gland?

<p>Release of TSH from the anterior pituitary (B)</p> Signup and view all the answers

Which of the following is a sign of congestive heart failure?

<p>Elevated veins (B)</p> Signup and view all the answers

What should be done if a patient has an artificial graft placed less than 6 months prior to an invasive dental procedure?

<p>Prophylactic antibiotic coverage is recommended (D)</p> Signup and view all the answers

Which condition is associated with hypertension in terms of complications?

<p>Renal failure and myocardial infarction (C)</p> Signup and view all the answers

What is a side effect of antihypertensive drugs that affects oral health?

<p>Gingival hyperplasia (D)</p> Signup and view all the answers

Which of the following factors would increase the risk of congenital heart disease?

<p>Gross obesity (B)</p> Signup and view all the answers

Which symptom is specifically linked with left-sided heart failure?

<p>Paroxysmal nocturnal dyspnea (B)</p> Signup and view all the answers

Which lifestyle factor increases the risk for coronary heart disease (CHD)?

<p>Nicotine use (A)</p> Signup and view all the answers

What percentage of diabetics seen by dental healthcare workers are typically Type 2?

<p>90% (A)</p> Signup and view all the answers

Which type of diabetes is characterized by requiring insulin for management?

<p>Type 1 (C)</p> Signup and view all the answers

Which of the following complications is most serious and associated with diabetes?

<p>Ketoacidosis (A)</p> Signup and view all the answers

Which symptom is commonly associated with both Type 1 and Type 2 diabetes?

<p>Increased thirst (A), Frequent urination (C)</p> Signup and view all the answers

What is the typical age of onset for Type 1 diabetes?

<p>15 years (A)</p> Signup and view all the answers

What is the primary treatment for managing hyperglycemia in diabetics?

<p>Administer insulin (C)</p> Signup and view all the answers

Which of the following is a common oral finding in poorly controlled diabetes?

<p>Increased gingivitis (D)</p> Signup and view all the answers

In cases of hypoglycemia, what is a recommended immediate action if the patient is conscious?

<p>Give oral glucose (D)</p> Signup and view all the answers

What factor influences the likelihood of developing complications such as nephropathy in diabetes?

<p>Control of blood glucose levels (D)</p> Signup and view all the answers

Which insulin type has an onset time of 1/4 hour?

<p>Regular (B)</p> Signup and view all the answers

What is the primary reason dental offices are prohibited from refusing treatment based on a patient's HIV status?

<p>To comply with the Disabilities Act (B)</p> Signup and view all the answers

Which of the following statements correctly describes the principles regarding patient referrals for dental care?

<p>Patient referrals should not consider HIV status (B)</p> Signup and view all the answers

What should be acquired before releasing any HIV-related information from dental records?

<p>A written release from the patient (D)</p> Signup and view all the answers

What is the median incubation period for HIV infection before signs of AIDS appear?

<p>10 years (C)</p> Signup and view all the answers

Which of the following correctly states a mode of transmission for HIV among adults?

<p>Heterosexual and homosexual intercourse (D)</p> Signup and view all the answers

Which of the following conditions is specifically associated with HIV infection?

<p>Major opportunistic infections (C)</p> Signup and view all the answers

As of the end of 2002, which Caribbean country had the highest estimated number of individuals living with HIV?

<p>Haiti (B)</p> Signup and view all the answers

Which of the following represents the main concern for dental healthcare workers regarding current diseases?

<p>Multiple drug-resistant tuberculosis (A)</p> Signup and view all the answers

Which of the following is a common precipitating factor for seizures?

<p>Skipping meals (C)</p> Signup and view all the answers

What does a negative EEG indicate in the context of seizures?

<p>Seizures may still be present (C)</p> Signup and view all the answers

Which medication is commonly associated with gingival hyperplasia as a side effect?

<p>Phenytoin (B)</p> Signup and view all the answers

In which condition is ptosis a common early sign?

<p>Myasthenia Gravis (A)</p> Signup and view all the answers

What is the recommended positioning for a patient experiencing uncontrolled seizure activity?

<p>On their side to minimize aspiration (B)</p> Signup and view all the answers

Which of the following medications is considered an anticholinergic used for drooling control?

<p>Cogentin (C)</p> Signup and view all the answers

What critical step should be taken if a patient exhibits multiple seizures lasting 30 minutes?

<p>Provide slow IV or IM Diazepam (B)</p> Signup and view all the answers

What is a common reason for xerostomia in individuals taking antidepressants?

<p>Anti-cholinergic effects (D)</p> Signup and view all the answers

What should be avoided when treating patients with CNS depression during dental care?

<p>Sedatives (A)</p> Signup and view all the answers

What type of tremors do patients with Parkinson’s Disease typically experience?

<p>Tremors at rest (B)</p> Signup and view all the answers

What is the primary characteristic of Multiple Sclerosis?

<p>De-myelinated plaques in the CNS (A)</p> Signup and view all the answers

Which type of depression is characterized by a lack of personal hygiene and withdrawal?

<p>Major depression (B)</p> Signup and view all the answers

What is a common concern during dental treatment for patients with Myasthenia Gravis?

<p>Respiratory depression (B)</p> Signup and view all the answers

Which heart condition does NOT require antibiotic prophylaxis for infective endocarditis?

<p>Atrial septal defect (B)</p> Signup and view all the answers

What is a common early clinical presentation of infective endocarditis?

<p>Fever (B)</p> Signup and view all the answers

Which systemic manifestation is associated with infective endocarditis?

<p>Roth's spots (A)</p> Signup and view all the answers

Which laboratory finding is NOT used in the diagnosis of infective endocarditis?

<p>Elevated creatinine levels (C)</p> Signup and view all the answers

What treatment regimen is typically used for infective endocarditis?

<p>Penicillin and streptomycin (B)</p> Signup and view all the answers

Which patient group listed does require antibiotic prophylaxis for certain procedures?

<p>Patients with a prosthetic heart valve (B)</p> Signup and view all the answers

What describes Osler's nodes commonly seen in infective endocarditis?

<p>Tender pink-red painful lumps in finger and toe pads (B)</p> Signup and view all the answers

What is the reported fatality rate for untreated infective endocarditis?

<p>20-70% (A)</p> Signup and view all the answers

Which heart condition requires antibiotic prophylaxis due to an increased risk of bacteremia?

<p>Ventricular septal defect (A)</p> Signup and view all the answers

What management consideration should be taken for a patient with prosthetic valve disease before an invasive dental procedure?

<p>Withdraw anticoagulants for 2 days prior (A)</p> Signup and view all the answers

Which of the following is NOT a recommended strategy to manage a patient with angina pectoris during dental treatment?

<p>Routine elective dental care (B)</p> Signup and view all the answers

What condition is suggested by the presence of a murmur related to a patent ductus arteriosus?

<p>Another type of congenital heart disease (D)</p> Signup and view all the answers

Which cardiac condition implies the presence of advanced arteriosclerosis and may require medication before dental procedures?

<p>Angina pectoris (C)</p> Signup and view all the answers

For patients with Marfan syndrome, which cardiac risk should be closely monitored?

<p>Aortic aneurysm rupture (B)</p> Signup and view all the answers

What is a critical step that dental healthcare workers must take for patients on anticoagulant therapy?

<p>Withdraw anticoagulants before invasive procedures (B)</p> Signup and view all the answers

What should dental healthcare workers be particularly cautious about in patients with a history of infective endocarditis?

<p>Antibiotic prophylaxis is necessary when treating them (D)</p> Signup and view all the answers

What is the implication of a CD4 count below 200 cells/mm3 in an adult?

<p>Increased risk of opportunistic infections (A)</p> Signup and view all the answers

What is the primary role of the Western blot test in HIV testing?

<p>Identifies specific antibodies against HIV proteins (A)</p> Signup and view all the answers

Which statement is true regarding pre- and post-test counseling in HIV testing procedures?

<p>It is mandatory for all patients undergoing testing. (C)</p> Signup and view all the answers

What does a low CD4:CD8 ratio signify in a patient's immune profile?

<p>Immune suppression (A)</p> Signup and view all the answers

In what situation can involuntary testing of a patient’s blood for HIV occur?

<p>If court ordered due to specific circumstances (B)</p> Signup and view all the answers

What is the primary method for managing Type 2 diabetes?

<p>Diet, exercise, and oral hypoglycemic medications (A)</p> Signup and view all the answers

At what age is Type 1 diabetes most commonly diagnosed?

<p>Teenage years (C)</p> Signup and view all the answers

Which diabetes-related complication is the most serious?

<p>Ketoacidosis (C)</p> Signup and view all the answers

What symptom is least commonly associated with diabetes?

<p>Silvery skin (D)</p> Signup and view all the answers

Which type of diabetes generally requires insulin for management?

<p>Type 1 (C)</p> Signup and view all the answers

What means of evaluating a diabetic patient is most helpful in determining their management and compliance?

<p>History of emergency room visits for diabetes-related issues (C)</p> Signup and view all the answers

Which complication is most strongly associated with an increased need for dialysis in diabetic patients?

<p>Nephropathy (C)</p> Signup and view all the answers

What is the characteristic breath odor associated with hyperglycemia?

<p>Acetone (C)</p> Signup and view all the answers

What type of oral finding is commonly seen in poorly controlled diabetes patients?

<p>Increased cavities and gingivitis (A)</p> Signup and view all the answers

What is the best initial action for a conscious patient experiencing hypoglycemia?

<p>Provide oral glucose (A)</p> Signup and view all the answers

What is necessary to prevent airway obstruction during dental procedures for patients with hemophilia?

<p>Factor V111 must be replaced before local anesthesia (B)</p> Signup and view all the answers

What oral manifestation is commonly seen in patients with polycythemia vera?

<p>Petechia on the mucosa (A)</p> Signup and view all the answers

Which platelet disorder is indicated by a platelet count of less than 25,000 mm3?

<p>Thromboctopenia with spontaneous hemorrhage (C)</p> Signup and view all the answers

Which condition is considered a cause of thrombocytopenia?

<p>Cancer chemotherapy (D)</p> Signup and view all the answers

What is the appropriate management for a patient with thrombocytopenia before invasive procedures?

<p>Platelet transfusion if count is below 50,000 mm3 (D)</p> Signup and view all the answers

Which test primarily assesses the intrinsic pathway of coagulation?

<p>Activated Partial Thromboplastin Time (APTT) (B)</p> Signup and view all the answers

What is a clinical sign of status asthmaticus?

<p>Prolonged wheezing with decreased oxygenation (D)</p> Signup and view all the answers

What is the typical treatment approach during a severe asthmatic attack?

<p>Deliver oxygen and use inhalation sympathomimetics (C)</p> Signup and view all the answers

Which finding is associated with significant risk status in asthma patients during dental appointments?

<p>Symptomatic state at time of dental appointment (B)</p> Signup and view all the answers

What is an essential preemptive strategy to prevent asthma attacks in a clinical setting?

<p>Ensure good rapport and minimize stress (C)</p> Signup and view all the answers

What oral finding may indicate early signs of thrombocytopenia?

<p>Purplish-red mucosa (A)</p> Signup and view all the answers

Which medication is likely to affect platelet function and needs to be reported during medical history screening?

<p>NSAIDs like Aspirin (B)</p> Signup and view all the answers

In a patient with a recent prescription of radioactive phosphorus, which test is especially important before dental treatments?

<p>Complete blood count (B)</p> Signup and view all the answers

What is a notable challenge in managing bleeding disorders during dental treatment?

<p>Patients are commonly unaware of their condition (D)</p> Signup and view all the answers

What is a common oral manifestation of severe hypothyroidism due to hypo-pituitarism?

<p>Delayed eruption (C)</p> Signup and view all the answers

Which symptom is characteristic of acromegaly in adults?

<p>Prognathism (D)</p> Signup and view all the answers

What oral manifestation is associated with primary systemic amyloidosis?

<p>Hemorrhagic bullae on tongue (C)</p> Signup and view all the answers

Which condition is characterized by an enzyme deficiency leading to yellow pigmentation of skin and oral manifestations?

<p>Gaucher Disease (C)</p> Signup and view all the answers

What is the primary enzyme deficiency associated with Morquio syndrome?

<p>Galactosamine-6-sulphatase (A)</p> Signup and view all the answers

Which oral manifestation is commonly seen in children suffering from protein malnutrition, such as Kwashiorkor?

<p>Angular cheilitis (A)</p> Signup and view all the answers

In cases of vitamin A deficiency, which oral manifestation is typically noted?

<p>Increased keratinization of oral mucosa (B)</p> Signup and view all the answers

Which condition is represented by 'foam-cells in dental pulp' as an oral manifestation?

<p>Niemann-Pick Disease (A)</p> Signup and view all the answers

What dental feature is commonly associated with Morquio syndrome?

<p>Marked enamel hypoplasia (D)</p> Signup and view all the answers

What oral finding is associated with systemic amyloidosis affecting the salivary glands?

<p>Altered taste and smell (D)</p> Signup and view all the answers

Flashcards

Steroid Supplementation: When to Give?

Patients on regular steroid medications may need supplemental doses before and/or after dental procedures, especially if they've discontinued their regular doses recently or if the procedure is expected to be complicated or stressful. The dosage and timing depend on how long ago the patient stopped their regular steroid use.

Steroid Supplementation: Dental Procedures

For dental procedures, a single dose of 100mg hydrocortisone is given intravenously 1 hour before the procedure. On the following day, the patient's regular daily steroid dosage is doubled. This is done to minimize post-operative pain and inflammation.

Hypothyroidism: What is it?

Hypothyroidism is a condition where the thyroid gland doesn't produce enough thyroid hormones (T3 & T4). This leads to a variety of symptoms, including slowed metabolism, weight gain, fatigue, and in severe cases, mental retardation.

Cretinism: Signs of Hypothyroidism in Infants

Cretinism is a severe form of hypothyroidism in infants. It causes physical changes in the baby, including a swollen tongue, thick and dry skin, slow growth, and mental retardation. It's important to diagnose and treat cretinism early to prevent permanent developmental problems.

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Thyroid Gland Basics

The thyroid gland is a butterfly-shaped gland located in the neck. It produces essential thyroid hormones (T3 and T4) that regulate metabolism, growth, and development. The thyroid also produces calcitonin, involved in calcium metabolism.

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Heart Transplant Recipient: Dental Concerns

Before a heart transplant, dental infections should be treated. Patients are often on lifelong immunosuppressants, making them more susceptible to infections. Cyclosporine can cause gingival hyperplasia. Drug-induced xerostomia increases the risk of caries, periodontal disease, and candidiasis.

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Other Heart Defects: Dental Considerations

Patients with arterio-arterial or arterio-venous fistulas are at risk for endocarditis. Invasive dental procedures may lead to Streptococcus viridans pericarditis. Artificial grafts can be colonized by bacteria after dental treatments, requiring prophylactic antibiotics if placed less than 6 months ago.

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Hypertension: Dental Implications

Hypertension accelerates atherosclerosis, increasing the risk of congestive heart failure and stroke. Cardiovascular complications rise with age and uncontrolled blood pressure. Renal failure and myocardial infarction are possible. Minimal use of epinephrine is recommended. Antihypertensive drugs can cause side effects like postural hypotension, confusion, depression, xerostomia, loss of libido, angioedema, and gingival enlargement.

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Hypertension: Management Considerations

Compliance with medication is often a challenge for hypertensive patients. Elective dental procedures are deferred if blood pressure is not controlled. Blood pressure classification uses categories for systolic and diastolic values.

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Cardiac Disease: Recognizing Signs

Gross obesity, nicotine/alcohol use, xanthelasma, elevated veins, clubbed fingers, swollen ankles, heart murmur, abnormal blood pressure, irregular pulse, chest tightness/pain, dyspnea, orthopnea, paroxysmal nocturnal dyspnea, severe cramping, claudication, xerostomia, orthostatic hypotension, impotence, depression, headache, visual blurring, dizziness, and lightheadedness can all indicate cardiac disease.

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Cardiac Disease: Associated Considerations

Obesity, nicotine/alcohol use, xanthelasma indicate a risk for coronary heart disease. Elevated veins point to congested heart failure. Clubbed fingers suggest congenital heart disease. Heart murmurs are associated with valvular disease. Abnormal blood pressure can indicate hypertension or congestive heart disease. Irregular pulse may point to atrial fibrillation. Chest tightness/pain could indicate myocardial ischemia. Dyspnea, orthopnea, and paroxysmal nocturnal dyspnea are linked to left-sided heart failure or congestive heart disease. Severe cramping, claudication, xerostomia, orthostatic hypotension, impotence, depression, headache, visual blurring, dizziness, and lightheadedness can all be side effects of antihypertensive medications.

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Emergency Cardiac Patient

It's crucial to be familiar with the classic signs and symptoms of cardiac distress and have appropriate management strategies for emergencies.

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Dental Implications of Cardiac Conditions

Dental care for individuals with heart conditions requires careful consideration of their specific needs and risk factors. This includes pre-transplant dental treatment, prophylactic antibiotics, and managing side effects of medications. The goal is to minimize risks and ensure successful dental treatment for heart patients.

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HIV Testing: ELISA

An initial HIV test that detects a general antibody response to the virus.

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HIV Testing: Western Blot

A confirmatory test for HIV that identifies specific antibodies directed against HIV proteins.

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HIV Testing: PCR

A test that detects HIV's genetic material (RNA and DNA), indicating active infection.

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CD4 Cell Count

A measure of immune system health in HIV patients, reflecting the number of white blood cells that fight infection.

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HIV Diagnosis Criteria

A person is considered HIV-positive when two ELISA tests and one consecutive Western blot test are positive for HIV antibodies.

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Type 1 Diabetes

An autoimmune disorder where the body's immune system attacks and destroys insulin-producing cells in the pancreas, resulting in an inability to produce insulin.

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Type 2 Diabetes

A condition where the body either doesn't produce enough insulin or can't use the insulin it produces effectively, leading to high blood sugar levels.

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Gestational Diabetes

A temporary form of diabetes that occurs during pregnancy, typically resolving after childbirth.

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Ketoacidosis

A serious complication of diabetes characterized by a buildup of ketones in the blood, leading to a dangerous acidic state.

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Retinopathy

A complication of diabetes affecting the eyes, causing damage to blood vessels in the retina and potentially leading to vision loss.

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Neuropathy

A complication of diabetes affecting the nerves, causing numbness, tingling, and pain in various parts of the body.

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Nephropathy

A complication of diabetes affecting the kidneys, causing damage to the filtering units of the kidneys and potentially leading to kidney failure.

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Microangiopathy

A complication of diabetes affecting small blood vessels, causing damage and narrowing, potentially leading to gangrene and amputations.

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Polydipsia

Excessive thirst, a common symptom of diabetes due to the body trying to flush out excess sugar.

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Polyuria

Increased urination, another common symptom of diabetes due to the body trying to eliminate excess sugar.

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Dental Offices & HIV

Dental offices are obligated by the Disabilities Act to provide care to patients regardless of their HIV status. This applies to both new and existing patients.

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Ethical Referral Guidelines

Dental referrals should be based on the dentist's ability to perform the specific procedure, not on a patient's HIV status.

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Confidentiality & HIV Records

Laws strongly protect the confidentiality of HIV-related information in dental records. Written consent is needed to release this information.

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Dentist's Responsibility

The dentist is ultimately accountable for the actions of their staff, including any unauthorized disclosure of patient information.

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HIV/AIDS in the Caribbean

The HIV epidemic in the Caribbean began in the late 1970s and early 1980s. The main mode of transmission for adults is through heterosexual and homosexual contact.

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HIV Infection: Immune System Effects

HIV infection disrupts the immune system, leading to immune deficiency and increased susceptibility to opportunistic infections and autoimmune conditions. This can ultimately progress to AIDS.

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Importance of HIV-Related Information

Detailed information about a patient's HIV status, including past and present illnesses, lab results, and medications, is essential for informed treatment planning and care.

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HIV & Dental Care Concerns

Dentists are particularly concerned about patients with tuberculosis and hepatitis B due to the risks of infection and potential transmission in the dental setting.

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Precipitating factors of seizures

These are events that can trigger a seizure in an individual with epilepsy. Examples include medication skipping, infections, stress, anxiety, pain, alcohol, and fatigue.

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EEG (Electroencephalogram)

A test that records brain activity using electrodes placed on the scalp. It helps diagnose seizures by detecting abnormal brain rhythms.

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Phenobarbital

A medication used to treat tonic-clonic seizures, potentially causing side effects like drowsiness, CNS depression, and megaloblastic anemia.

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Phenytoin (Dilantin)

A medication for tonic-clonic seizures, possibly causing confusion, lethargy, ataxia, gingival hyperplasia, skin rash, and blood dyscrasias.

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Dental Management of Controlled Seizures

Patients with controlled seizures can receive routine dental care.

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Dental Management of Uncontrolled Seizures

Patients with uncontrolled seizures require special considerations during dental treatment, including restraint, positioning, and close monitoring of vital signs.

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Emergency Care of Seizures

Single short seizure usually doesn't need medication. Postictal stage requires observation. Multiple seizures, especially lasting 30 minutes, are considered Status Epilepticus (life-threatening) and require immediate Diazepam medication.

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Multiple Sclerosis (MS)

A chronic degenerative disease that affects the central nervous system, characterized by demyelinated plaques, often affecting young adults.

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Clinical Findings of MS

Progressive weakness in lower limbs, cerebellar ataxia, sensory and visual disturbances, and periods of remission are common.

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Parkinson's Disease

A progressive disorder of the basal ganglia, resulting from degeneration of the nigrostriatal pathway, affecting mainly older adults.

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Clinical Findings of Parkinson's Disease

Tremors at rest, rigidity, bradykinesia (slowness of movement), tremors subside with intended movements and during sleep.

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Myasthenia Gravis (MG)

An autoimmune disorder affecting the neuromuscular junction, causing muscle weakness that worsens throughout the day, often starting with ptosis (drooping eyelids).

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Treatment of Myasthenia Gravis

Neostigmine and pyridostigmine (anti-cholinesterases) are used to improve muscle function, but can cause xerostomia (dry mouth).

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Anxiety

A state of unease and worry, often characterized by a feeling of impending disaster.

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Depression

A state of persistent low mood, loss of interest, and feelings of worthlessness. It's common and affects countless people.

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What is a Congenital Heart Disease?

A heart condition that someone is born with.

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What is Infective Endocarditis?

An infection of the inner lining of the heart, usually the valves.

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Why are Antibiotics Needed for Known Cardiac Patients?

To prevent bacterial infections from entering the bloodstream and causing Infective Endocarditis.

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What is Prosthetic Valve Disease?

A heart condition where a natural valve has been replaced with an artificial one.

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What is Angina Pectoris?

Chest pain caused by a lack of oxygen to the heart muscle.

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When is Elective Dental Care Allowed for Angina Pectoris?

Only when the patient has been stable for at least 3 months.

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What is Special About Managing Angina Patients?

They require careful monitoring of blood pressure and heart rate, and immediate medical attention should be close by.

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Why be Aware of Medications?

To understand the severity and risk of side effects and interactions.

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Infective Endocarditis: What is it?

Infective endocarditis is an infection of the inner lining of the heart, usually affecting the heart valves. Bacteria, fungi, or other microbes can cause this infection, potentially leading to serious complications like heart failure and stroke.

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Endocarditis Risk Factors: Heart Conditions

Certain heart conditions increase the risk of developing infective endocarditis. These include prosthetic heart valves, congenital heart defects, and previous history of endocarditis.

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Endocarditis Symptoms: Early vs. Late

Early symptoms of endocarditis are often subtle, including unexplained fever, fatigue, and joint pain. Later symptoms become more severe and may include shortness of breath, chest pain, and signs of emboli (blood clots).

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Endocarditis: Common Systemic Manifestations

Endocarditis can cause various systemic manifestations, including subungual bleeding (splinter hemorrhages), Osler's nodes, Roth's spots, petechiae, splenomegaly, and hematuria.

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Endocarditis Diagnosis

Diagnosing endocarditis involves blood cultures to identify the causative organism, along with tests like erythrocyte sedimentation rate (ESR) and complete blood count.

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Endocarditis Treatment

Treatment for endocarditis typically involves high doses of antibiotics, often a combination of penicillin and streptomycin, administered intravenously.

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Endocarditis Prophylaxis: Who Needs It?

Antibiotic prophylaxis is recommended for patients with certain heart conditions before dental procedures to prevent endocarditis.

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Endocarditis Prophylaxis: Common Regimen

The standard antibiotic prophylactic regimen involves a single dose of amoxicillin (2.0 g) or clindamycin (600 mg) taken orally one hour before the procedure.

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Dental Management of Diabetes

Patients with diabetes require special considerations in dental settings, including dietary adjustments and preventing infections.

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Oral Findings in Uncontrolled Diabetes

Poorly controlled diabetes can lead to increased caries, gum disease, yeast infections, dry mouth, and difficulty healing.

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Hypoglycemia

Low blood sugar, a dangerous condition for diabetics.

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What is Amyloidosis?

A condition where abnormal protein (amyloid) accumulates in tissues, causing organ damage.

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What are the Oral Manifestations of Amyloidosis?

Macroglossia (enlarged tongue), yellow nodules on the tongue and face, bleeding ulcers, and dry mouth due to salivary gland involvement.

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What is Gaucher Disease?

A type of lipidosis where the body lacks the enzyme to break down certain fats.

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What are the Oral Manifestations of Gaucher Disease?

Radiolucent areas (dark spots) in the jawbones, bleeding after tooth extractions.

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What is Niemann-Pick Disease?

Another type of lipidosis where the body can't break down sphingomyelin, a type of fat.

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What are the Oral Manifestations of Niemann-Pick Disease?

Foam-like cells within the dental pulp.

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What is Mucopolysaccharidosis?

Group of genetic disorders where the body can't break down complex sugars, leading to various physical and developmental issues.

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What are the Oral Manifestations of Sanfillippo Syndrome?

Irregular dentin buildup in the pulp chamber.

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What are the Oral Manifestations of Morquio Syndrome?

Severe enamel hypoplasia (enamel defects) with pitting and gray, small teeth.

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What is Protein Deficiency?

A condition where the body doesn't get enough protein, leading to various health problems.

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HIV Testing: 2 Tests

To be considered HIV positive, a person needs to have two positive ELISA tests and one consecutive positive Western blot test for HIV antibodies.

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CD4 Cell Count: Significance

CD4 cell count is a measure of immune system health for HIV patients, showing how many white blood cells are fighting infection. It helps determine the stage of HIV disease and guides treatment plans.

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HIV+ Oral Lesions: Contagious?

Oral lesions in HIV+ patients can be highly contagious, especially those caused by conditions like Herpes Simplex Virus (HSV) and Molluscum Contagiosum.

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HIV Testing: Pre- & Post- Counseling

HIV testing requires pre- and post-test counseling to discuss risks, implications, and appropriate services for patients.

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HIV Testing: Indications for Dental Patients

Dental patients may be tested for HIV if their symptoms raise suspicion of HIV infection, if they've had a needlestick exposure, or if a court order mandates testing of their blood.

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Hemophilia: Oral Surgery

Oral surgery in hemophilia patients is challenging due to the risk of bleeding. Mechanical splints, local hemostatic agents (oxidized cellulose & bovine thrombin NaCO3) and small sutures are used to control bleeding. Factor VIII replacement is crucial.

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Hemophilia: Endodontics

Pulpotomy (removing the pulp of a primary tooth) can be performed on primary teeth in hemophilia patients. 1:1,000 epinephrine is used to control bleeding.

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Polycythemia Vera: Oral Manifestations

The mouth, along with the ears, may appear purplish-red with petechiae (pinpoint reddish-purple spots). The tongue can look crystal violet, the gums swell and bleed easily, and extractions can result in severe bleeding.

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Platelet Disorders: Thrombocytosis

An abnormal increase in the number of platelets in the blood. It can be caused by various factors, including infection, neoplasms, pregnancy, and epinephrine release.

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Platelet Disorders: Thrombocytopenia

A condition characterized by a low platelet count in the blood. It increases the risk of bleeding, with severe bleeding likely if the count falls below 25,000 mm3.

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Thrombocytopenia: Oral Significance

Petechiae, ecchymosis, and spontaneous gingival bleeding can be early signs of thrombocytopenia in the mouth.

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Screening for Bleeding Disorders: History

Asking specific medical history questions like frequency of abnormal bleeding, history of severe epistaxis, increased menstrual bleeding, recent spontaneous bruising, severe gingival bleeding, and post-surgical/extraction hemorrhage can help identify potential bleeding disorders.

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Screening for Bleeding Disorders: Medications

Aspirin and other NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) can interfere with platelet function and need to be considered.

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Screening for Bleeding Disorders: Physical Signs

Petechiae, ecchymosis, telangiectasia, and spider angioma can be physical signs suggesting potential bleeding disorders.

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Tests for Bleeding Disorders: Prothrombin Time (PT)

Measures the extrinsic coagulation pathway. Prolonged PT indicates deficiencies in factors II, V, VII, X, and fibrinogen.

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Tests for Bleeding Disorders: Activated Partial Thromboplastin Time (APTT)

Measures the intrinsic coagulation pathway. It detects deficiencies in factors XII, V, VII, IX, X, XI, and XIII.

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Tests for Bleeding Disorders: Thrombin Time (TT)

Detects circulating inhibitors, decreased fibrinogen, and dysfibrinogenemia (abnormal fibrinogen).

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Tests for Bleeding Disorders: Bleeding Time (BT)

An in-vivo test evaluating clot formation time. It helps detect platelet defects, von Willebrand disease, and thrombocytopenia.

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Asthma: Definition

A chronic respiratory disorder characterized by increased airway hypersensitivity, bronchial edema, airway narrowing, excessive mucus production, impaired cilia activity, and increased bronchial infections.

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Asthma: Medical Management

The goal of asthma management is to prevent attacks, minimize their frequency and severity, identify and avoid triggers, and educate patients about their condition and medication compliance. Medications include inhaled sympathomimetics, xanthine preparations, and steroids.

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Study Notes

Essentials of Medicine for Dentistry

  • Presented by Dr. Doryck L. Boyd, DDS, Oral & Maxillofacial Pathologist, Associate Professor
  • Focuses on cardiovascular diseases and their management in dental practice.

Cardiovascular Disease

  • Dental patients may present with a confirmed history of cardiovascular disease (CVD) or signs/symptoms of CVD.
  • Cardiac emergencies can arise during dental procedures.
  • Dental Health Care Workers (DHCWs) must be prepared to manage these situations.

General Critical Management Guidelines

  • Increased morbidity & mortality is a concern with undiagnosed CVD.
  • Closely observe patients for signs/symptoms of CVD.
  • Be aware of medication duration, dose, and potential side effects & interactions.
  • Maintain close communication with the patient's physician.
  • Prevent infection.
  • Schedule early morning appointments to minimize stress.
  • Lower stress leads to lower blood pressure.
  • Safe levels of local anesthetic (LA) + epinephrine must be used.
  • Aspirate to prevent injecting LA into blood vessels

Known Cardiac Patients

  • Congenital heart defects like ventricular septal defect, idiopathic hypertrophic subaortic stenosis, bicuspid aortic valve complex HD (outflow), patent ductus arteriosus murmur, pulmonary stenosis, tetralogy of Fallot (outflow obstruction → decreased oxygen), Marfan syndrome, and cortication of aorta.
  • Increased risk of bacteremia → endocarditis.
  • Antibiotic prophylaxis is required.
  • Marfan's syndrome: Congestive heart failure, aortic aneurysm rupture → death; in 2/3 of cases.
  • Turner's syndrome (in women): Aortic complications.
  • Tetralogy of Fallot: Usually corrected before dental treatment.

Acquired Cardiac Disease

  • Mitral valve prolapse
  • Degenerative heart disease
  • Rheumatic valvular disease
  • Asymmetric septal hypertrophy
  • Syphilitic aortic valve disease
  • Endocarditis
  • Medical referral for current status
  • Antibiotic prophylaxis for a history of infective endocarditis only.

Prosthetic Valve Disease

  • Very high risk for infective carditis
  • Anticoagulant therapy requires special precautions if invasive procedures are performed → bleeding
  • Contact your physician; withdraw anticoagulant for 2 days prior to treatment.

Angina Pectoris

  • Implies advanced arteriosclerosis.
  • Premedicate with anti-anginal or sedative medications prior to stressful procedures.
  • Hypotension after general anesthesia → myocardial infarction.
  • Routine dental care for stable cases in recent months.
  • Avoid elective care with unstable angina.
  • Caution with dose of LA + epinephrine and aspirate while injecting.
  • Schedule short morning appointments.
  • Minimize stress.
  • Monitor blood pressure & heart rate.
  • Immediate medical attention should be available.

Recent MI (within 6 Months)

  • Implies advanced arteriosclerosis.
  • Written consultation with physician is recommended.
  • Stress → re-infarction.
  • Anticoagulant or aspirin may be required.
  • Require recovery period → elective dentistry (3–6 months).
  • Minimum LA + epinephrine.
  • Schedule short, stress-less morning appointments.
  • Monitor vital signs.
  • Medical help nearby.

MI over 6 Months & Endocarditis

  • Written consultation with physician is advisable.
  • Stress → re-infarction.
  • Anticoagulant or aspirin therapy may be required.
  • Elective dental treatment with limited epinephrine.
  • Ensure good pain control → less stress
  • IV drug abusers have a high risk of recurrent endocarditis.

Arrhythmias (Abnormal Heart Beat/Rate)

  • Most patients need no change in routine dental care.
  • Effective anxiety control may be required; especially in advanced cases.
  • Advanced cases → CVA (e.g., blindness, irregular speech, decreased limb sensitivity, hemiplegia)
  • Stress or hypoxia (e.g., gauze, rubber dam) → increased arrhythmia.
  • Limit epinephrine
  • Monitor potassium levels if on diuretics.

Pacemaker & Congested Heart Failure

  • Pacemaker: May imply a history of bradycardia (slow heart beat); Avoid external electromagnetic devices (electro-surgical units are the highest risk).
  • Congested heart failure: Implies advanced heart disease, HBP, CHD, myopathy, valvular disease → high risk of mortality; May result in excessive metabolic demand.

Congested Heart Disease

  • Medications and side effects can complicate dental treatment (e.g., diuretics & digitalis → nausea + vomiting).
  • Avoid triggering gag reflex.
  • Reduce stress. Stress increases workload on the heart.
  • Treat the patient in a reclining chair position. Prone position to pulmonary congestion if retained in supine position for too long.

Heart Transplant Recipient

  • Dental infections should be treated before a transplant.
  • A medical consultation is a must.
  • Patients may be on immunosuppressive drugs for life → increased susceptibility to infections.
  • Cyclosporine → gingival hyperplasia
  • Drug-induced xerostomia → increased caries + PDD & candidiasis.

Other Heart Defects

  • Arterio-arterial or arterio-venous fistula → endocarditis
  • Streptococccus viridans pericarditis may follow invasive dental treatment
  • Artificial grafts with prosthetic material can be a site for hematogenous implantation of bacteria post invasive dental treatment. Prophylactic coverage if graft placed less than 6 months.

Hypertension

  • Accelerates atherosclerosis → CHF + CVA
  • Cardiovascular complications increase with age if BP is high.
  • Renal failure & MI possible
  • Minimal use of epinephrine
  • Side effects of anti-hypertensive drug → postural hypotension, confusion, depression, xerostomia, loss of libido, angioedema, gingival enlargement.
  • Compliance with medications is often a problem.
  • Elective dental Rx deferred if BP not controlled.
  • Classification of blood pressure (in adults over 18 years). The table with the categories and their ranges are included below. Note: The table of ranges is not included in the current dataset.

Cardiac Disease Signs & Considerations

  • Gross obesity → risk for Coronary Heart Disease (CHD).
  • Nicotine/alcohol → risk for CHD
  • Xanthelasma → Hypercholesterolemia → CHD
  • Elevated veins → Congested Heart Failure
  • Clubbed fingers → congenital heart disease → CHD
  • Nail cyanosis → CHD
  • Swollen ankles → Right side Heart Failure
  • Heart Murmur → Valvular disease, Hypertention, Congested Heart Disease (CHD), Atrial fibrillation.
  • Abnormal BP → Hypertention, Congested Heart Failure
  • Irregular pulse → atrial fibrillation.
  • Chest tightness, Pain → Myocardial ischemia, Left side HF, Congested Heart Failure
  • Dyspnea, SOB → Left side HF, Congested Heart Failure, CHD
  • Orthopnea, SOB recumbent → LSHF, CHD
  • Paroxysmal nocturnal dyspnea → LSHF, CHD
  • Severe cramping, claudication → Atherosclerosis
  • Xerostomia → Side effects of antihypertensive medications
  • Orthostatic hypotension → side effects of antihypertensive medications
  • Impotence → side effects of antihypertensive medications
  • Depression → side effects of antihypertensive medications
  • Headache
  • Visual blurring → dizziness, lightheadedness

Emergency Cardiac Patient

  • Familiarity of classical signs & symptoms of cardiac distress, and appropriate management is essential.
  • Treatment of emergencies not within the scope of a Dental Health Care Worker (DHCW).
  • Angina pectoris: Definition is a clinical term referring to brief paroxysmal thoracic pain and moderate intensity. The pain comes from ischemic heart disease.

Angina Pectoris (cont)

  • Etiology: Coronary arteriosclerosis or more than 1 major coronary artery → transient myocardial oxygen demand > available oxygen supply.
  • Clinical presentation: Effort or stress related substernal pressure, tightness or discomfort may radiate to the left shoulder, medial surface arm, jaw, throat, or neck.

Angina Pectoris (Emergency Treatment)

  • Stop dental Rx, confirm the diagnosis, and eliminate precipitating factors.
  • Calmly reassure and make the patient comfortable.
  • Admin vasodilator (nitroglycerine 0.4 mg tabs sublingual). Repeat every 5 minutes up to 3 times (prn).
  • Administer oxygen (2–4 liters/minute).
  • Record vital signs
  • If attack continues, call for help, start IV, and summon medical assistance to transport the patient to the ER.

Myocardial Infarction (MI)

  • Definition: Irreversible myocardial damage resulting from prolonged ischemic injury.
  • Etiology: Coronary artery atherosclerosis & thrombolytic vascular occlusion.
  • Clinical Presentation: Severe prolonged substernal or chest pain radiating to either arm or mandible. Nausea, vomiting, sense of impending doom. Denial, insistence upon gastric distress.

Myocardial Infarction (Emergency Treatment)

  • Reaffirm diagnosis.
  • Summon medical assistance (926-5721)
  • Administer nitroglycerin 0.4 mg sublingually
  • Administer crushed aspirin (325 mg) if not allergic.
  • Administer oxygen (2–4 liters/minute low).
  • Start IV, administer analgesic (morphine 250 mg) and repeat as necessary (prnq 10 minutes).
  • Monitor and record vital signs.
  • Prepare to start CPR.

Cardiac Arrest

  • Definition: Sudden cessation of cardiac function with disappearance of arterial BP, indicating ventricular fibrillation, tachycardia or ventricular standstill.
  • Etiology: Myopathy or advanced atherosclerosis; coronary artery disease.
  • Clinical Presentation: Mostly respiratory arrest precedes cardiac arrest. No pulse, BP, or heart beat; seizures are common.

Cardiac Arrest (Emergency Treatment)

  • BLS (Basic Life Support).
  • Recognize unconsciousness & confirm diagnosis.
  • Summon medical assistance & initiate CPR with patient on a flat surface
  • Open airway, check for breathing.
  • Ventilate with 2 long breaths (1–1.5 seconds each).
  • Check carotid pulse (lateral neck) and initiate external chest compressions (5:1 or 15:2).
  • Arrange for defibrillation ASAP.
  • Start IV, transport to ER.

... (Remainder of the notes remain the same)

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