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Questions and Answers
What is the primary mechanism of action of amiodarone?
What is the primary mechanism of action of amiodarone?
- Directly stimulating AV node conduction.
- Enhancing alpha-adrenergic activity.
- Blocking sodium, potassium, and calcium channels. (correct)
- Selective beta-adrenergic blockade.
Which of the following is an absolute contraindication for the use of amiodarone?
Which of the following is an absolute contraindication for the use of amiodarone?
- Stable atrial fibrillation.
- First-degree AV block.
- Amiodarone allergy. (correct)
- Controlled hypertension.
Calcium chloride is LEAST likely to be administered in the setting of:
Calcium chloride is LEAST likely to be administered in the setting of:
- Calcium channel blocker overdose.
- Symptomatic hypotension.
- Suspected hyperkalemia.
- Suspected digoxin toxicity. (correct)
What is the primary intended action of diltiazem in treating atrial fibrillation or flutter?
What is the primary intended action of diltiazem in treating atrial fibrillation or flutter?
Which of the following vital signs would be of MOST concern prior to administering diltiazem?
Which of the following vital signs would be of MOST concern prior to administering diltiazem?
At which dose of dopamine administration would you expect to see alpha peripheral effects that cause peripheral vasoconstriction?
At which dose of dopamine administration would you expect to see alpha peripheral effects that cause peripheral vasoconstriction?
Why is it important to correct hypovolemia before administering dopamine?
Why is it important to correct hypovolemia before administering dopamine?
What is a primary action of epinephrine?
What is a primary action of epinephrine?
In what scenario would nebulized epinephrine be MOST appropriate?
In what scenario would nebulized epinephrine be MOST appropriate?
What is the MAIN goal when administering fentanyl for pain management?
What is the MAIN goal when administering fentanyl for pain management?
A patient with significant respiratory depression may be experiencing?
A patient with significant respiratory depression may be experiencing?
When is the administration of glucagon MOST appropriate?
When is the administration of glucagon MOST appropriate?
What is a limitation of glucagon's effectiveness in treating hypoglycemia?
What is a limitation of glucagon's effectiveness in treating hypoglycemia?
For a patient experiencing pain during the infusion of fluids or medications via an intraosseous (IO) site, which medication is MOST suitable?
For a patient experiencing pain during the infusion of fluids or medications via an intraosseous (IO) site, which medication is MOST suitable?
A patient with a history of which condition requires careful monitoring for potential toxicity after lidocaine administration?
A patient with a history of which condition requires careful monitoring for potential toxicity after lidocaine administration?
Which of the following is a known action of Magnesium Sulfate?
Which of the following is a known action of Magnesium Sulfate?
What condition would contraindicate use of magnesium sulfate?
What condition would contraindicate use of magnesium sulfate?
What is the primary effect of midazolam that makes it useful in managing agitation or delirium?
What is the primary effect of midazolam that makes it useful in managing agitation or delirium?
A patient who has recently consumed alcohol is MOST susceptible to?
A patient who has recently consumed alcohol is MOST susceptible to?
What is the pharmacologic action of N-acetylcysteine in the treatment of acetaminophen overdose?
What is the pharmacologic action of N-acetylcysteine in the treatment of acetaminophen overdose?
A patient with what co-existing conditions should use caution and be monitored when using N-acetylcysteine?
A patient with what co-existing conditions should use caution and be monitored when using N-acetylcysteine?
Nitroglycerin's ability to relieve which type of chest pain is MOST notable?
Nitroglycerin's ability to relieve which type of chest pain is MOST notable?
After using erectile dysfunction medications in the last 48 hours the use of Nitroglycerin is?
After using erectile dysfunction medications in the last 48 hours the use of Nitroglycerin is?
After the administration of norepinephrine, what is the expected effect on blood pressure and heart rate?
After the administration of norepinephrine, what is the expected effect on blood pressure and heart rate?
What condition would MOST warrant fluid resuscitation prior to starting norepinephrine?
What condition would MOST warrant fluid resuscitation prior to starting norepinephrine?
Octreotide functions by?
Octreotide functions by?
An adverse effect sometimes caused by Octreotide is?
An adverse effect sometimes caused by Octreotide is?
What is the primary action of antibiotics?
What is the primary action of antibiotics?
Which is a serious side effect to monitor when a patient is on antibiotics?
Which is a serious side effect to monitor when a patient is on antibiotics?
In treating a patient with anemia or a coagulopathy blood products?
In treating a patient with anemia or a coagulopathy blood products?
Before administering blood products what is the care team looking for?
Before administering blood products what is the care team looking for?
The main goal of administering colloids is?
The main goal of administering colloids is?
When are colloids contraindicated?
When are colloids contraindicated?
What is NOT true regarding the effect of corticosteroids?
What is NOT true regarding the effect of corticosteroids?
The effect of corticosteroids is often seen in?
The effect of corticosteroids is often seen in?
Increasing urine output by inhibiting sodium and water reabsorption is?
Increasing urine output by inhibiting sodium and water reabsorption is?
Severe dehydration, anuria, hypokalemia are absolute?
Severe dehydration, anuria, hypokalemia are absolute?
Flashcards
Amiodarone
Amiodarone
A potent antiarrhythmic drug with multiple effects on sodium, potassium, and calcium channels, prolonging action potential and repolarization.
Calcium Chloride
Calcium Chloride
A medication that increases extracellular and intracellular calcium levels, stimulating catecholamine release and increasing cardiac contractility.
Diltiazem
Diltiazem
A calcium channel blocker that inhibits calcium ion influx, slowing ventricular rate, especially in atrial fibrillation and flutter.
Dopamine
Dopamine
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Epinephrine
Epinephrine
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Fentanyl
Fentanyl
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Glucagon
Glucagon
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Lidocaine
Lidocaine
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Magnesium Sulfate
Magnesium Sulfate
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Midazolam
Midazolam
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N-Acetylcysteine
N-Acetylcysteine
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Nitroglycerin
Nitroglycerin
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Norepinephrine
Norepinephrine
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Octreotide
Octreotide
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Antibiotics
Antibiotics
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Blood Products
Blood Products
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Colloids
Colloids
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Corticosteroids
Corticosteroids
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Diuretics
Diuretics
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Fosphenytoin/Phenytoin IV
Fosphenytoin/Phenytoin IV
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Glycoprotein lib/Illa Inhibitors
Glycoprotein lib/Illa Inhibitors
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H2 Blockers
H2 Blockers
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Insulin IV
Insulin IV
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Pantoprazole IV
Pantoprazole IV
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Potassium Salts
Potassium Salts
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Propofol
Propofol
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Total Parenteral Nutrition (TPN)
Total Parenteral Nutrition (TPN)
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IV Vitamins
IV Vitamins
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Study Notes
Amiodarone
- Has multiple effects on sodium, potassium, and calcium channels
- Prolongs action potential and repolarization
- Decreases AV conduction and sinus node function
- Has alpha- and beta-adrenergic blocking properties
- Indicated for ventricular fibrillation, pulseless ventricular tachycardia, regular wide complex tachycardia with a pulse, and irregular wide complex tachycardia
- Is absolutely contraindicated in second or third degree AV blocks or amiodarone allergy
- Can cause hypotension and bradycardia
Calcium Chloride
- Increases extracellular and intracellular calcium levels
- Stimulates the release of catecholamines
- Increases cardiac contractile state
- Essential to transmission of nerve impulses, contraction of cardiac, smooth, and skeletal muscles
- Has stabilizing effects on myocardial cell membranes in hyperkalemia
- Indicated in suspected hyperkalemia and calcium channel blocker overdose
- Should not be used in suspected digoxin toxicity, hypercalcemia, calcium chloride allergy, or suspected severe hypokalemia
- May cause discomfort at the injection site or can precipitate if mixed with sodium bicarbonate
Diltiazem
- A calcium channel blocker
- Exerts inhibitory effects on the cardiac conduction system, principally at the AV node, slowing the ventricular rate associated with Atrial Fibrillation and Flutter
- Inhibits extracellular calcium ion influx, resulting in inhibition of contraction and dilation of arteries
- Indicated for narrow complex tachyarrhythmias and SVT not responsive to adenosine
- Absolutely contraindicated in heart block/bradycardia, systolic blood pressure < 90 mmHg, sick sinus syndrome, ventricular tachycardia, or diltiazem allergy
- AV node conduction prolongation may result in second- or third-degree AV block; should not be administered to compromised myocardium; use caution with hypotensive patients
Dopamine
- An endogenous catecholamine that acts on both dopaminergic and adrenergic neurons
- Dose dependent effects:
- 1-2 mcg/kg/min dilates renal and mesenteric blood vessels, little effect on heart rate/blood pressure
- 2-10 mcg/kg/min increases cardiac output without great heart rate/blood pressure increase
- 10-20 mcg/kg/min causes peripheral vasoconstriction, increases SVR and blood pressure
- 20-40 mcg/kg/min reverses dilatation of renal and mesenteric vessels and increases heart rate/oxygen demand to undesirable limits
- Indicated for refractive cardiogenic or distributive shock
- Absolutely contraindicated in hypovolemia and dopamine allergy
- May induce tachyarrhythmias; high doses can cause peripheral vasoconstriction
- Should not be added to sodium bicarbonate or other alkaline solutions
- Treat hypovolemia with fluids before administering dopamine
- Best administered via infusion pump to regulate rate; monitor closely
Epinephrine
- A catecholamine with alpha and beta effects that increases heart rate and blood pressure
- A potent bronchodilator
- Indicated in cardiac arrest, bradycardia, anaphylaxis and shock
- Used via IM for severe refractory wheezing and nebulized for croup and bronchiolitis
- Uncontrolled hypertension and epinephrine allergy is an absolute contraindication
- Can increase cardiac work and precipitate angina, myocardial infarction, or major dysrhythmias in an individual with ischemic heart disease
Fentanyl
- An opioid agonist-analgesic
- Inhibits ascending pain pathways and increases pain threshold
- Produces analgesia, respiratory depression, and sedation
- Indicated for severe pain of any etiology
- Oxygen saturation less than 90% or significant respiratory depression, and fentanyl allergy is absolutely contraindicated
- Can cause neurologic and respiratory depression; respiratory support must be available when administering
- Can be reversed with naloxone
- Aim is reduction of pain, not total elimination
Glucagon
- Increases serum glucose by releasing glycogen stores from the liver
- Will only work if there are sufficient liver glycogen stores
- Counteracts effects of beta blocker or calcium channel blocker overdose
- Indicated for hypoglycemia and symptomatic bradycardia from beta blocker or calcium channel blocker overdose
- Is not the first line treatment for hypoglycemia and should ONLY be used if unable to obtain IV access; with Glucagon allergy absolutely contraindicated
- May cause nausea and vomiting
Lidocaine
- Antiarrhythmic drug that decreases automaticity by slowing the rate of depolarization
- Terminates re-entry by decreasing conduction in re-entrant pathways
- Local anesthetic for pain control caused by infusion of fluids/medications via an intraosseous site
- Indicated in cardiac arrest due to ventricular fibrillation of pulseless ventricular tachycardia or wide complex tachycardia with a pulse; and pain management after IO insertion in conscious patients
- Bradycardia or lidocaine allergy is an absolute contraindication
- Higher doses may cause CNS stimulation, seizure, depression, and respiratory failure; toxicity is more likely in the elderly and patients with CHF or impaired liver function
Magnesium Sulfate
- A smooth muscle relaxant
- Decreases early after depolarizations and reduces arrhythmias
- Decreases seizures in eclampsia and preeclampsia, possibly via cerebral vasodilation
- CNS depressant
- Indicated in eclampsia, preeclampsia, Torsades de pointes, and severe bronchospasm in patients with asthma or COPD
- Absolute contraindication is magnesium allergy
- May cause hypotension and respiratory depression in large doses; use caution in patients with renal insufficiency or chronic renal failure/dialysis
Midazolam
- A benzodiazepine that functions as a CNS depressant, anticonvulsant, and sedative
- Indicated for seizures, sedation, agitation/delirium with agitated behavior, and uncontrolled shivering in hyperthermia
- Respiratory and/or CNS depression or midazolam allergy is an absolute contraindication
- More potential than other IV benzodiazepines to cause respiratory depression
- Closely monitor for respiratory depression and/or hypotension occur
- Elderly patients may have more profound respiratory and/or CNS depression (half dose should be administered)
N-acetylcysteine
- Used for treatment of acetaminophen overdose
- Maintains or replenishes glutathione reserves in the liver
- Enhances non-toxic metabolism of acetaminophen
- A mucolytic for individuals experiencing thick mucus issues associated with chronic bronchopulmonary disorders
- Indicated for acetaminophen overdose or toxicity and respiratory conditions with thick mucus or excessive mucus production
- Hypersensitivity to the drug is an absolute contraindication
- Asthma, bronchospasm history or upper Gl bleeding should be administered with caution
- Side effects: hypersensitivity reaction, bronchospasm anaphylaxis, nausea, vomiting, and tachycardia
Nitroglycerin
- A potent smooth muscle relaxant
- Causes systemic venodilation, decreasing preload and arterial vasodilation, decreasing afterload
- Coronary artery vasodilation increases blood flow to the myocardium
- Decreases myocardial oxygen demand
- Indicated for chest pain, particularly when Acute Coronary Syndrome is suspected, hypertensive emergency, and congestive heart failure with pulmonary edema
- Hypotension, recent use of erectile dysfunction medications, nitroglycerin should not be given to children, and nitroglycerin allergy are absolute contraindications
- Generalized vasodilatation may cause profound hypotension and reflex tachycardia; use with caution in patients taking medication for erectile dysfunction
- Side effects include throbbing headache, flushing, dizziness and burning under the tongue
Norepinephrine
- Catecholamine that stimulates beta-1 and alpha-1 receptors in the sympathetic nervous system
- Results in vasoconstriction, increased blood pressure, enhanced contractility, and increased heart rate
- Indicated for hypotension unresponsive to IV fluid resuscitation
- Hypotension caused by hypovolemia and norepinephrine allergy are absolute contraindications
- Adequate fluid replacement before starting norepinephrine must be ensured
- Administer through largest vein possible to reduce risk of tissue necrosis if it extravasates; monitor blood pressure closely; must be administered via infusion pump
Octreotide
- Suppresses secretion of serotonin and gastrointestinal peptides
- Increases absorption of fluid and electrolytes from the gastrointestinal tract; increases transit time
- Increases cardiac contractile state
- Helps control symptoms of Gl bleeding by augmenting platelet aggregation, decreasing splanchnic blood flow, and antagonizing angiogenesis
- Indicated for treatment of severe diarrhea in patients with Gl endocrine tumors; management of diarrhea in AIDS patients or patients with fistulas; refractory hypoglycemia for sulfonylurea overdose; and variceal upper GI bleeding
- Hypersensitivity is an absolute contraindication
- Side effects: dizziness, weakness, orthostatic hypotension, nausea/vomiting, hyperglycemia, hypoglycemia
Antibiotics
- Bactericidal or bacteriostatic agents targeting bacterial infections
- Indicated for severe bacterial infections such as sepsis, pneumonia, or wound infections
- Known allergy to the antibiotic being used is an absolute contraindication
- Side effects include hypersensitivity reactions, Gl upset, and potential nephrotoxicity
- Onset: Variable; Peak: 30-90 min; Duration: Depends on agent
Blood Products
- Restore blood volume, oxygen-carrying capacity, and clotting factors
- Indicated in Hemorrhage, anemia, coagulopathy
- Severe allergic reactions and religious restrictions are absolute contraindications
- Side effects include transfusion reactions, volume overload and infection risk
- Onset: Immediate; Peak: Immediate; Duration: Varies (dependent on clearance)
Colloids
- Expand plasma volume by increasing oncotic pressure
- Indicated for hypovolemia, shock and burn resuscitation
- Absolute contraindications include severe cardiac failure, renal impairment and coagulopathy
- Side effects include fluid overload, anaphylaxis, and coagulopathy risk
- Onset: Rapid; Peak: Immediate; Duration: Varies (hours)
Corticosteroids
- Suppress inflammation and immune response
- Indicated in anaphylaxis, asthma, spinal cord injury, and septic shock
- Active uncontrolled infection and systemic fungal infections is an absolute contraindication
- Side effects include hyperglycemia, immunosuppression, and adrenal suppression
- Onset: 1-2 hours; Peak: 4-6 hours
Diuretics
- Increase urine output by inhibiting sodium and water reabsorption
- Indicated in pulmonary edema, heart failure, and renal failure
- Severe dehydration, anuria and hypokalemia are absolute contraindications
- Side effects include electrolyte imbalance, dehydration, and ototoxicity (loop diuretics)
- Onset: 5-60 min (IV); Peak: 1-2 hours; Duration: 4-6 hours
Fosphenytoin/Phenytoin IV
- Stabilizes neuronal membranes, decreases seizure activity through sodium ions channels across cell membranes
- Indicated in Status epilepticus
- Hypersensitivity/Allergy to hydantoin products or Sinus bradycardia, sinoatrial block, second- and third-degree AV block, or Adams-Stokes syndrome are absolute contraindications
- Cardiovascular: Severe hypotension and cardiac arrhythmias can occur, especially with rapid IV administration; Requires cardiac function monitoring
- Central Nervous System: Nystagmus, dizziness, somnolence, ataxia, and stupor
- Dermatologic: Local dermatologic reactions
- Other: Purple glove syndrome and hyperphosphatemia may occur
Glycoprotein IIb/IIIa Inhibitors
- Antiplatelet agents that prevent platelet aggregation and thrombus formation by inhibiting the GpIIb/Illa receptor on the surface of platelets
- Used during percutaneous coronary interventions (PCI) such as angioplasty with or without stent placement and for treatment of acute coronary syndromes (ACS)
- Absolute contraindications include major bleeding diathesis, active internal bleeding or history of hemorrhagic stroke within the previous 30 days
- Side effects include increased risk of bleeding, including gastrointestinal hemorrhage, severe drop in platelet count, and rare cases of anaphylaxis
- Rapid onset of action after IV administration
- Effects on platelet function can persist for up to 48 hours after discontinuation
H2 Blockers
- Competitively inhibit histamine at H2 receptors in gastric parietal cells, reducing acid secretion
- Indicated for GERD (Gastroesophageal Reflux Disease), PUD (Peptic Ulcer Disease), Stress ulcer prophylaxis, Zollinger-Ellison syndrome, and Aspiration pneumonitis prophylaxis
- Hypersensitivity to H2 receptor antagonists, acute porphyria, and severe renal dysfunction, are absolute contraindications
- CNS effects: Confusion and dizziness may occur as side effects
- Cardiovascular: Bradycardia with rapid IV administration, Hematologic: Thrombocytopenia can occur
- Gl: Gastrointestinal upset can occur
- Onset: 30-60 minutes, Peak Effect: 1-3 hours, Duration: 6-12 hours
Insulin IV
- Facilitates cellular glucose uptake, regulates carbohydrate metabolism, promotes glucose storage as glycogen, and inhibits hepatic glucose production to reduce blood glucose levels
- Used in patients with diabetes mellitus to manage hyperglycemia, to treat diabetic ketoacidosis (DKA) and hyperosmolar hyperglycemic state (HHS), and with glucose to manage hyperkalemia
- Absolute contraindications includes hypersensitivity to insulin or its excipients and episodes of hypoglycemia
- Hypoglycemia is the most common adverse effect
- IV insulin has a rapid onset of action, effectively lowering blood glucose levels within minutes
- The glucose-lowering effect is immediate with IV administration and typically lasts only for minutes
Pantoprazole IV
- A proton pump inhibitor (PPI) that suppresses gastric acid secretion, reducing gastric acidity
- Indicated for short-term treatment of gastroesophageal reflux disease (GERD) with erosive esophagitis in adults and for treatment of pathological hypersecretory conditions
- Known hypersensitivity to pantoprazole, substituted benzimidazoles, or any component of the formulation is an absolute contraindication
- Common side effects: Headache and Gl symptoms
- Serious Side Effects can include kidney problems and low magnesium levels; may worsen Lupus symptoms
- Onset: approximately 15 minutes, peak effect: 2 - 3 hours after administration, and duration is approximately 24 hours
Potassium Salts
- An electrolyte replenisher used to treat and prevent hypokalemia by restoring potassium balance
- Used in patients with hypokalemia, gastrointestinal losses, or digitalis toxicity
- Absolute contraindications include hyperkalemia, renal failure or severe renal impairment, or conditions associated with potassium retention
- Rapid or excessive administration can lead to hyperkalemia
- Onset: Rapid, Peak Effect: Dependent on rate of administration and individual patient factors, Duration: Varies
Propofol
- An intravenous anesthetic agent acting like a GABA_A receptor agonist, enhancing inhibitory neurotransmission in the central nervous system
- Provides sedation, hypnosis, and anesthesia, with a rapid onset and short duration of action
- Used for anesthetic induction and maintenance, sedation for mechanically ventilated patients, and procedural sedation
- Known hypersensitivity to propofol, egg lecithin, or soybean oil is an absolute contraindication
- Hypotension and respiratory depression may occur as side effects
- Onset: 15 - 30 seconds, Peak effect: Within 1 minute, Duration: Approximately 5-10 minutes
Total Parenteral Nutrition (TPN)
- Intravenous administration of nutrients to maintain anabolism and prevent catabolism in patients unable to receive nutrition orally or enterally
- Indicated for Non-functional gastrointestinal tract, conditions requiring bowel rest, or severe malnutrition
- Functional and accessible gastrointestinal tract, hemodynamic instability or severe metabolic imbalances, and severe liver disease or intractable coagulopathy are absolute contraindications
- Side effects include infections and metabolic irregularities
- Onset: Immediately and adjustments are based on monitoring
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