Understanding Anaemia and Full Blood Count (FBC)
119 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does the term 'thrombocytopenia' indicate?

  • An excess of red blood cells
  • An elevated white blood cell count
  • An increased number of platelets
  • A deficiency of platelets (correct)

In a patient with iron deficiency anemia, what would you expect to see in their FBC results?

  • Hypochromic, microcytic red cells and low ferritin levels (correct)
  • Normochromic, normocytic red cells and elevated ferritin levels
  • Normochromic, macrocytic red cells and normal ferritin levels
  • Hyperchromic, macrocytic red cells and elevated ferritin levels

Which of the following is NOT a typical cause of iron deficiency?

  • Dietary deficiency
  • Vitamin B12 malabsorption (correct)
  • Chronic blood loss
  • Malabsorption in the GI tract

Why does B12 deficiency sometimes occur after a partial gastrectomy?

<p>Intrinsic factor production is reduceddue to loss of parietal cells (B)</p> Signup and view all the answers

What is the most likely cause of macrocytic anemia in a chronic alcoholic with a poor diet?

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

A patient presents with macrocytic anemia and neurological symptoms. Which deficiency is most likely responsible?

<p>Vitamin B12 (C)</p> Signup and view all the answers

A patient is diagnosed with pernicious anemia. Which of the following antibodies would most likely be present?

<p>Anti-parietal cell antibodies (D)</p> Signup and view all the answers

A patient with a history of Crohn's disease presents with macrocytic anemia. Despite adequate dietary intake of B12 and normal intrinsic factor levels, the anemia persists. What is the MOST likely underlying mechanism?

<p>Impaired absorption of B12 in the terminal ileum (B)</p> Signup and view all the answers

What is the underlying mechanism by which decreased oxygen tension leads to complications in sickle cell anemia?

<p>Sickling of red blood cells, leading to infarction. (B)</p> Signup and view all the answers

A patient presents with petechiae and is suspected of having immune thrombocytopenia (ITP). Which of the following pathological processes is the MOST likely cause of their petechiae?

<p>Reduced number of platelets. (D)</p> Signup and view all the answers

Why does the presence of sickling or thalassaemia trait warrant caution during sedation or general anaesthesia?

<p>Potential for decreased oxygen tension exacerbating sickling. (A)</p> Signup and view all the answers

A patient is diagnosed with a high-grade non-Hodgkin lymphoma. Compared to low-grade lymphomas, high-grade lymphomas are typically characterized by:

<p>More aggressive growth and potentially curable with intensive treatment. (D)</p> Signup and view all the answers

What is a common presenting symptom of multiple myeloma related to hypercalcemia?

<p>Stomach upsets and constipation. (B)</p> Signup and view all the answers

Which of the following is a critical diagnostic feature of Hodgkin lymphoma?

<p>Reed-Sternberg cells. (B)</p> Signup and view all the answers

Myelodysplastic syndrome (MDS) disrupts normal blood cell production. Which of the following BEST describes the primary issue in MDS?

<p>Immature cells fail to mature into functional blood cells. (B)</p> Signup and view all the answers

A patient presents with normochromic normocytic anemia, bone pain, and elevated ESR. Which of the following laboratory findings would MOST strongly suggest a diagnosis of multiple myeloma?

<p>Presence of Bence Jones protein in the urine. (C)</p> Signup and view all the answers

Consider a scenario where a researcher is investigating the genetic basis of leukemia and aims to identify specific chromosomal translocations associated with different subtypes. Which of the following molecular techniques would be MOST appropriate for this purpose?

<p>Karyotyping and Fluorescence In Situ Hybridization (FISH). (C)</p> Signup and view all the answers

A 25-year-old female presents with fatigue, easy bruising, and frequent infections. Her CBC reveals pancytopenia, and a bone marrow biopsy demonstrates hypocellularity with no evidence of abnormal cells. Further testing is performed, and she is found to have shortened telomeres and mutations in genes involved in telomere maintenance. Which of the following conditions is MOST likely responsible for her presentation?

<p>Aplastic Anemia secondary to inherited bone marrow failure. (C)</p> Signup and view all the answers

Which of the following is a common treatment modality for Non-Hodgkin Lymphoma (NHL)?

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

A patient with Haemophilia A may benefit from which of the following treatments?

<p>Factor VIII replacement (A)</p> Signup and view all the answers

What is the primary mechanism of action of DDAVP in the context of Haemophilia A?

<p>Increases Factor VIII levels (A)</p> Signup and view all the answers

Why is DDAVP ineffective in Haemophilia B?

<p>It does not increase Factor IX levels (D)</p> Signup and view all the answers

What is the most common inheritance pattern of von Willebrand Disease (VWD)?

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

Which of the following best describes the role of von Willebrand Factor (vWF)?

<p>Affecting both platelet adhesiveness and migration (C)</p> Signup and view all the answers

A patient with Von Willebrand's Disease (VWD) is scheduled for a minor surgical procedure. Which of the following factors would MOST influence the choice of treatment?

<p>Severity of VWD, planned procedure, previous experience, and VWD subtype (C)</p> Signup and view all the answers

Factor V Leiden increases the risk of thrombosis due to which of the following mechanisms?

<p>Resistance to inactivation by Activated Protein C (C)</p> Signup and view all the answers

Why is Vitamin K deficiency linked to decreased clotting factors in patients with liver problems?

<p>The liver requires vitamin K to synthesize clotting factors II, VII, IX, and X. (A)</p> Signup and view all the answers

What is the primary mechanism by which DDAVP aids in managing mild haemophilia A and type I von Willebrand disease (vWD)?

<p>DDAVP stimulates the release of stored factor VIII and von Willebrand factor (vWF) from endothelial cells. (A)</p> Signup and view all the answers

In a patient with a known bleeding disorder undergoing a minor surgical procedure, what is the MOST appropriate initial step in management, assuming that bleeding is not immediately life-threatening?

<p>Consult with the patient's Haemophilia Centre to review their specific condition and management plan. (B)</p> Signup and view all the answers

Why are NSAIDs contraindicated in patients with bleeding disorders?

<p>NSAIDs impair platelet function, increasing the risk of bleeding. (B)</p> Signup and view all the answers

A patient with severe Haemophilia A is scheduled for an emergency tooth extraction. Pre-operatively his Factor VIII level is at 2%. The hospital laboratory is experiencing delays and cannot confirm Factor VIII levels until 4 hours post-replacement therapy. Which of the following is the MOST appropriate immediate next step?

<p>Administer the standard calculated dose of Factor VIII replacement therapy empirically, without waiting for post-infusion levels, aiming for a target level appropriate for the procedure. (B)</p> Signup and view all the answers

A patient taking Dabigatran twice daily is scheduled for a complex extraction. According to SDCEP guidelines, what is the correct course of action regarding their morning dose?

<p>Omit the morning dose and administer the evening dose, provided it is more than 4 hours after haemostasis. (C)</p> Signup and view all the answers

What laboratory value is used to monitor the effectiveness of Heparin?

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

A patient taking Rivaroxaban once daily in the morning is scheduled for a gingival biopsy. Following SDCEP guidelines, when should they take their Rivaroxaban dose?

<p>The dose should be delayed until 4 hours post haemostasis (A)</p> Signup and view all the answers

According to the information provided and general medical knowledge, which of the following dental procedures would be classified as 'low risk of bleeding' in a patient taking DOACs?

<p>Incision and drainage of a localized abscess. (B)</p> Signup and view all the answers

A 70-year-old female patient's Erythrocyte Sedimentation Rate (ESR) is 45 mm/hr. Based on the age-dependent formula provided, how should this value be interpreted?

<p>The ESR is significantly elevated and warrants further investigation. (A)</p> Signup and view all the answers

What laboratory findings would MOST strongly suggest iron deficiency anemia?

<p>Low Hb and low MCV with low Ferritin levels (B)</p> Signup and view all the answers

Which of the following is the MOST common cause of normocytic anemia?

<p>Anaemia of chronic disease (D)</p> Signup and view all the answers

A patient presents with macrocytic anemia. Measurement of serum levels of Vitamin B12 and red cell folate are within normal range. Which of the following is the MOST likely cause?

<p>Drug related cause (D)</p> Signup and view all the answers

Which of the following is a potential cause of Folate deficiency?

<p>All of the above (D)</p> Signup and view all the answers

What is the typical treatment for B12 deficiency caused by pernicious anemia?

<p>Lifelong injections of Vitamin B12 every 3 months (C)</p> Signup and view all the answers

In cases of suspected B12 deficiency, which initial test is MOST useful in determining the underlying cause?

<p>Intrinsic factor antibody (A)</p> Signup and view all the answers

A patient with a history of alcoholism and poor diet presents with macrocytic anemia. After initial treatment with thiamine, what is the MOST appropriate next step in management?

<p>Measure serum B12 and red cell folate levels (C)</p> Signup and view all the answers

A researcher is evaluating the complete blood count (CBC) results of several patients to identify instances of 'paenia' and 'cytosis'. Which of the following scenarios correctly matches the condition with its definition?

<p>A patient with a white blood cell count of 2.0 x 10^9/L exhibiting 'leukopenia'. (D)</p> Signup and view all the answers

Methotrexate is contraindicated in patients who consume which substance in excess?

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

What is the general recommendation for blood transfusions in patients, assuming no other complications?

<p>Avoid transfusions unless the patient is symptomatic or hemoglobin is below 70 g/l (B)</p> Signup and view all the answers

A patient has a consistently high white cell count of 40 x 10^9/l. Which condition is LEAST likely to be responsible?

<p>Normal physiological response to exercise (C)</p> Signup and view all the answers

A patient presents with a suspected bacterial infection. Which type of white blood cell would you expect to see an elevated count of?

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

A patient presents with a platelet count of 30 x 10^9/l. What dental treatment considerations must be taken?

<p>Liaise with the patient's Haemophilia Centre to determine the need for platelet transfusion or DDAVP (D)</p> Signup and view all the answers

A patient taking Warfarin requires a dental extraction. What is the MOST important consideration regarding their INR?

<p>The INR needs to be 4 or less along with local haemostatic measures (B)</p> Signup and view all the answers

A patient taking Dabigatran twice daily is scheduled for a higher risk procedure in the afternoon. Following SDCEP guidelines, what is the correct course of action regarding their morning dose?

<p>The patient should skip their morning dose and take their next dose at the usual time in the evening, provided it is &gt;4 hours after haemostasis. (C)</p> Signup and view all the answers

A 75-year-old male patient has an Erythrocyte Sedimentation Rate (ESR) of 48 mm/hr. According to the age-dependent formula, which of the following interpretations is MOST accurate?

<p>The ESR is slightly elevated but likely due to age-related factors and warrants no further immediate investigation. (A)</p> Signup and view all the answers

According to normal FBC values, which of the following Haemoglobin levels would be considered normal for a female?

<p>110-180g/l (C)</p> Signup and view all the answers

What laboratory findings are characteristic of iron deficiency anaemia?

<p>Hypochromic, microcytic with low ferritin (C)</p> Signup and view all the answers

A patient presents with anaemia, and initial blood tests reveal a low haemoglobin level but a normal mean corpuscular volume (MCV). Which of the following types of anaemia is MOST likely?

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

Which of the following is an example of 'cytosis'?

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

A patient presents with fatigue and is diagnosed with macrocytic anaemia. Assuming dietary history and other common causes have been ruled out, what medication could potentially be contributing to this condition?

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

What is the average storage duration of folate and B12 in the human body, respectively?

<p>Folate: 4 months, B12: 2-6 years (A)</p> Signup and view all the answers

In pernicious anaemia, which immunological abnormality directly leads to the malabsorption of vitamin B12?

<p>Antibodies against intrinsic factor (C)</p> Signup and view all the answers

Following a partial gastrectomy, a patient develops B12 deficiency despite adequate dietary intake and absence of intrinsic factor antibodies. What is the MOST likely mechanism behind this deficiency?

<p>Reduced production of gastric acid (B)</p> Signup and view all the answers

Which of the following platelet counts would be classified as thrombocytopenia?

<p>50 x 10^9/l (B)</p> Signup and view all the answers

For a patient on Warfarin requiring dental treatment, what is the MOST important consideration regarding their INR?

<p>The INR must be below 4 (D)</p> Signup and view all the answers

A patient requires a flap raising procedure. According to SDCEP guidelines, this is classifies as which risk of bleeding.

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

Why are serial APTT measurements essential when a patient is administered Heparin?

<p>To ensure the drug is maintaining the necessary anticoagulation without excessive risk of bleeding. (A)</p> Signup and view all the answers

A 60-year-old male patient has an Erythrocyte Sedimentation Rate (ESR) of 40 mm/hr. How should this value be interpreted?

<p>Significantly elevated, warranting further investigation. (A)</p> Signup and view all the answers

What is the MOST likely reason tranexamic acid is used as a mouthwash following dental procedures for patients with platelet abnormalities?

<p>It inhibits fibrinolysis, stabilizing blood clots. (C)</p> Signup and view all the answers

A patient on Rivaroxaban (once daily in the morning) is having a higher-risk procedure. According to SDCEP guidelines, which action is MOST appropriate?

<p>Delay their morning dose, and advise the patient take it 4 hours after haemostasis. (D)</p> Signup and view all the answers

A patient has severely decreased lymphocytes. Which of the following conditions is MOST likely responsible?

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

A patient's FBC results show a Haemoglobin level of 90 g/l. According to the provided normal ranges, how should this be interpreted for a female patient?

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

Which of the following combinations of FBC results is MOST indicative of iron deficiency anaemia?

<p>Low Hb, Low MCV, Low Ferritin (A)</p> Signup and view all the answers

In the context of haematology, which term describes a condition with an abnormally high number of neutrophils in the blood?

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

Which type of anaemia is MOST likely associated with chronic kidney disease?

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

A patient presents with glossitis and peripheral neuropathy, and their blood tests reveal macrocytosis. Which vitamin deficiency is MOST likely the cause?

<p>Vitamin B₁₂ (D)</p> Signup and view all the answers

What is the primary function of tranexamic acid in managing platelet abnormalities in dental patients?

<p>To inhibit fibrinolysis and promote clot stability. (A)</p> Signup and view all the answers

A patient with a history of total gastrectomy is being evaluated for anaemia. Despite normal dietary intake of B12, they exhibit signs and symptoms of deficiency. What is the MOST likely underlying mechanism?

<p>Decreased intrinsic factor production (B)</p> Signup and view all the answers

A patient taking Dabigatran twice daily is scheduled for a complex extraction in the afternoon. According to SDCEP guidelines, what is the correct course of action regarding their morning dose?

<p>Omit the morning dose, and administer the evening dose, &gt;4 hours after haemostasis. (D)</p> Signup and view all the answers

A patient presents with macrocytic anaemia. Serum B12 and folate levels are within normal limits. Further investigation reveals elevated levels of methylmalonic acid (MMA) and homocysteine. Which vitamin deficiency, if any, is MOST likely present?

<p>B12 deficiency only (D)</p> Signup and view all the answers

Which dental procedure, according to SDCEP guidelines for patients on DOACs, is classified as having a higher risk of bleeding?

<p>Gingival re-contouring. (D)</p> Signup and view all the answers

Following a bone marrow transplant, a patient develops macrocytic anemia. All common causes of B12 and Folate deficiency have been ruled out. Acyclovir - an antiviral - is part of their prescription. What is the MOST probable cause of their macrocytic anemia?

<p>Acyclovir-induced Folate Deficiency (B)</p> Signup and view all the answers

A patient's blood test reveals an elevated white blood cell count, predominantly neutrophils. Which of the following conditions is MOST likely?

<p>Bacterial infection. (B)</p> Signup and view all the answers

According to the information provided, which type of white blood cell would be elevated in a patient experiencing an allergic reaction?

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

A patient presents with a consistently low lymphocyte count. What condition is LEAST likely to cause this?

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

What is a critical consideration for dental treatment when a patient's platelet count is consistently below 50 x 10^9/l?

<p>Close liaison with Haemophilia Centre required. (A)</p> Signup and view all the answers

A patient presents with a history of controlled hypertension and is on Rivaroxaban (Factor Xa inhibitor) once daily in the morning. They require a flap raising procedure. According to SDCEP guidelines, which action is MOST appropriate?

<p>Advise the patient to skip their morning dose and take it 4 hours post haemostasis. (D)</p> Signup and view all the answers

What is the most likely cause of microcytic hypochromic anemia?

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

Which of the following best describes 'thrombocytosis'?

<p>An abnormally high number of platelets (A)</p> Signup and view all the answers

Which of the following conditions would MOST likely lead to normocytic anaemia?

<p>Chronic kidney disease (C)</p> Signup and view all the answers

Why might a patient who has undergone a partial gastrectomy be at risk of developing B12 deficiency?

<p>Reduced production of intrinsic factor (D)</p> Signup and view all the answers

A patient presents with fatigue and lab results indicate macrocytic anaemia. Assuming dietary information and common causes have been investigated and ruled out, which medication is MOST likely contributing to this condition?

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

In the context of pernicious anemia, what is the primary immunological mechanism leading to vitamin B12 malabsorption?

<p>Autoantibodies against intrinsic factor or parietal cells (D)</p> Signup and view all the answers

A patient with a history of alcoholism and poor diet presents with macrocytic anemia. After initial thiamine administration, what is the MOST appropriate next step?

<p>Administer oral folate supplementation (D)</p> Signup and view all the answers

A researcher is investigating potential causes for a patient's macrocytic anemia. Serum B12 and folate levels are normal. Further investigation reveals elevated levels of both methylmalonic acid (MMA) and homocysteine. Which vitamin deficiency is MOST likely present?

<p>No vitamin deficiency is likely, investigate alternative aetiologies (A)</p> Signup and view all the answers

In a patient with acute leukaemia, which of the following is the MOST likely presenting symptom?

<p>Short history of bruising, bleeding, and infection (B)</p> Signup and view all the answers

What is the underlying cause of petechiae in cases of severe thrombocytopenia?

<p>Reduced number of platelets (B)</p> Signup and view all the answers

In the context of sickle cell anaemia, what triggers red blood cells to sickle?

<p>Exposure to decreased oxygen tension (C)</p> Signup and view all the answers

What is the primary defect in thalassaemia?

<p>Decreased production of one or more globin chains (B)</p> Signup and view all the answers

Why is caution advised regarding decreased oxygen tension in patients with sickle cell trait or thalassaemia trait, especially during sedation or general anaesthesia?

<p>Potential for sickling and vaso-occlusive complications (C)</p> Signup and view all the answers

What is the MOST common initial symptom of lymphoma?

<p>Painless lymph node swelling (C)</p> Signup and view all the answers

Which of the following is a defining characteristic of Hodgkin lymphoma?

<p>Reed-Sternberg cells (D)</p> Signup and view all the answers

Which of the following conditions is characterized by the presence of immature cells in the bone marrow that do not mature into functional blood cells?

<p>Myelodysplastic syndrome (MDS) (B)</p> Signup and view all the answers

A patient with multiple myeloma is MOST likely to be prescribed which medication?

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

What is the significance of Bence Jones protein in the urine of a patient suspected of having multiple myeloma?

<p>Indicates the presence of paraprotein, supporting the diagnosis (A)</p> Signup and view all the answers

Why are NSAIDs contraindicated in patients with inherited or acquired bleeding disorders?

<p>They interfere with platelet aggregation, prolonging bleeding time. (D)</p> Signup and view all the answers

What is the primary mechanism by which tranexamic acid helps to control bleeding?

<p>It inhibits fibrinolysis, preventing the breakdown of blood clots. (D)</p> Signup and view all the answers

A patient with mild Haemophilia A requires a minor dental procedure. What would be the MOST appropriate initial treatment to prepare the patient for the procedure?

<p>Administer DDAVP (desmopressin) to increase Factor VIII levels. (A)</p> Signup and view all the answers

A patient with a known bleeding disorder is being considered for a surgical procedure. What platelet count is generally considered safe to proceed with surgery?

<p>Greater than 50 x 10^9/l (C)</p> Signup and view all the answers

A patient with severe Haemophilia A (Factor VIII <1%) is scheduled for an elective knee replacement. Current guidelines suggest maintaining a trough level between 50-100% for major surgery. They are currently on prophylactic Factor VIII replacement at 30 IU/kg three times per week. A standard vial contains 500 IU of Factor VIII. If the patient weighs 70 kg and based on the available Factor VIII vials and known frequency of administration, how could you increase the dosing to minimally attempt to achieve these high levels?

<p>Increase the dose by one vial (500 IU). (D)</p> Signup and view all the answers

What is the PRIMARY mechanism of action of DDAVP in managing mild Haemophilia A?

<p>Increasing the release of stored Factor VIII. (A)</p> Signup and view all the answers

Why is DDAVP typically ineffective in treating Haemophilia B?

<p>It targets Factor VIII, not Factor IX. (C)</p> Signup and view all the answers

Which statement BEST describes the role of von Willebrand Factor (vWF)?

<p>It binds Factor VIII and promotes platelet adhesion. (A)</p> Signup and view all the answers

What is the primary mechanism by which Factor V Leiden increases the risk of thrombosis?

<p>Resistance to inactivation by activated protein C. (D)</p> Signup and view all the answers

Besides Factor VIII or IX concentrates, which of the following medications may be beneficial in certain bleeding disorders due to its antifibrinolytic properties?

<p>Tranexamic acid. (A)</p> Signup and view all the answers

A previously healthy 30 year old male patient presents with sudden extensive bruising after a minor bump. His labs show a prolonged APTT but normal PT. His Factor VIII level is normal but his vWF activity is very low. Which of the following antibodies would MOST strongly suggest a diagnosis of Acquired von Willebrand Disease?

<p>Anti-vWF antibodies. (A)</p> Signup and view all the answers

A 62-year-old patient with a history of autoimmune disease presents with mucocutaneous bleeding and an isolated prolonged APTT. Initial investigations reveal normal levels of Factor VIII and Factor IX. However, mixing studies fail to correct the prolonged APTT, and further testing reveals the presence of a lupus anticoagulant. Which of the following statements BEST describes the MOST likely underlying mechanism?

<p>Interference of the lupus anticoagulant with phospholipid-dependent coagulation assays. (D)</p> Signup and view all the answers

According to SDCEP guidelines, which of the following dental procedures is classified as having a 'low risk of bleeding' in a patient taking DOACs?

<p>Incision and drainage of a localized abscess (B)</p> Signup and view all the answers

A patient taking Dabigatran twice daily is scheduled for a complex extraction in the morning. Following SDCEP guidelines, what modification to their medication is MOST appropriate?

<p>Advise the patient to miss their morning dose, and take their evening dose as long as it is at least 4 hours after haemostasis is achieved . (A)</p> Signup and view all the answers

What is the MOST appropriate method for monitoring the effectiveness of Heparin?

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

A 68-year-old female patient has an Erythrocyte Sedimentation Rate (ESR) of 42 mm/hr. The normal range is Men = Age divided by 2, and women Age +10 divided by 2. How should this value be interpreted?

<p>Slightly elevated, but likely within the normal range for her age and gender. (D)</p> Signup and view all the answers

A patient taking Rivaroxaban (a direct Factor Xa inhibitor) once daily in the evening is scheduled for a dental extraction. According to SDCEP guidelines, which course of action is MOST appropriate regarding the timing of their Rivaroxaban dose?

<p>Advise the patient to take their usual evening dose, ensuring it is &gt; 4 hours post haemostasis. (A)</p> Signup and view all the answers

Flashcards

Anaemia

Low haemoglobin levels due to a decreased red cell mass.

Hypochromic, microcytic

Red blood cells that are smaller and paler than normal.

Cytosis

Too many cells in the blood.

Paenia

Not enough cells in the blood.

Signup and view all the flashcards

Microcytic hypochromic anaemia

Small and pale red blood cells, often due to iron deficiency.

Signup and view all the flashcards

Normocytic anaemia

Red blood cells are normal in size and colour; often related to chronic conditions.

Signup and view all the flashcards

Macrocytic anaemia

Large red blood cells, often due to B12 or folate deficiency.

Signup and view all the flashcards

Pernicious Anaemia

Malabsorption of B12 due to a lack of intrinsic factor.

Signup and view all the flashcards

Petechiae

Small, pinpoint-sized red or purple spots on the skin due to bleeding from capillaries.

Signup and view all the flashcards

Thalassaemias

A group of inherited blood disorders characterized by decreased production of globin chains.

Signup and view all the flashcards

Leukaemia

Cancer of the blood cells affecting the bone marrow and lymphatic system.

Signup and view all the flashcards

Acute Leukaemias

Bruising, bleeding/infection, sometimes skin rash

Signup and view all the flashcards

Bone Marrow Failure

A condition where the bone marrow fails to produce enough blood cells, leading to pancytopaenia.

Signup and view all the flashcards

Myelodysplastic Syndrome (MDS)

A type of cancer where immature cells fail to mature into useful blood cells.

Signup and view all the flashcards

Myeloma

A plasma cell neoplasm leading to marrow infiltration and osteolytic deposits.

Signup and view all the flashcards

Multiple Myeloma Symptoms

Normochromic normocytic anaemia, Paraprotein in urine.

Signup and view all the flashcards

Lymphoma

Cancer of the lymphatic system, including Non-Hodgkin and Hodgkin types.

Signup and view all the flashcards

Lymphoma Symptoms

Painless lymph node swelling, fever, fatigue, night sweats, pruritus, unexplained weight loss

Signup and view all the flashcards

Local Haemostatic Measures

Material used to promote blood clotting; examples include resorbable oxidised cellulose and tranexamic acid.

Signup and view all the flashcards

Inherited Bleeding Disorders

Inherited bleeding disorders, such as Haemophilia A, B, and von Willebrand's Disease.

Signup and view all the flashcards

Haemophilia

Deficiency in factor VIII (Haemophilia A) or factor IX (Haemophilia B), preventing stabilization of the 'platelet plug'.

Signup and view all the flashcards

Management of vWD

Involves close communication with specialists, DDAVP infusion (for mild cases or type 1 vWD), factor replacement, atraumatic techniques, local hemostatic measures, and tranexamic acid.

Signup and view all the flashcards

Management of Platelet Abnormality

May involve platelet transfusion or DDAVP, atraumatic technique, local hemostatic measures, and oral tranexamic acid.

Signup and view all the flashcards

NHL Treatment

Treatment options that are often effective for NHL include Chemotherapy, Radiotherapy, Monoclonal antibody treatment and Stem cell transplants.

Signup and view all the flashcards

Vascular Defects (Bleeding)

Congenital or acquired abnormalities affecting blood vessel structure or function.

Signup and view all the flashcards

DDAVP

A treatment for Haemophilia A, increases Factor VIII levels.

Signup and view all the flashcards

Anti-fibrinolytics

Drugs like tranexamic acid used to prevent the breakdown of blood clots.

Signup and view all the flashcards

von Willebrand Disease (VWD)

The most common inherited bleeding disorder, caused by a deficiency in von Willebrand Factor (vWF).

Signup and view all the flashcards

Factor V Leiden

Hypercoaguability due to an abnormal Factor V.

Signup and view all the flashcards

Warfarin & INR

An anticoagulant that requires INR monitoring to ensure the level is 4 or less, alongside local haemostatic measures, before dental procedures.

Signup and view all the flashcards

Heparin & APTT

An anticoagulant whose activity is measured by APTT (Activated Partial Thromboplastin Time).

Signup and view all the flashcards

Direct Factor Xa Inhibitors

Medications like Rivaroxaban that directly inhibit Factor Xa in the coagulation cascade.

Signup and view all the flashcards

DOACs & Low Bleeding Risk

For simple extractions or minor procedures, continuing DOACs poses a low bleeding risk, according to SDCEP guidelines.

Signup and view all the flashcards

Erythrocyte Sedimentation Rate (ESR)

A non-specific marker indicating presence of disease and inflammation.

Signup and view all the flashcards

Haematocrit

The proportion of blood volume that is occupied by red blood cells.

Signup and view all the flashcards

Mean Corpuscular Volume (MCV)

The average volume of a red blood cell.

Signup and view all the flashcards

Mean Corpuscular Haemoglobin (MCH)

The average mass of haemoglobin per red blood cell.

Signup and view all the flashcards

Iron Deficiency Anaemia

Low iron levels, leading to reduced haemoglobin production.

Signup and view all the flashcards

Ferritin

Iron stores level in the body.

Signup and view all the flashcards

Folate Deficiency - Causes

Reduced intake, malabsorption, or increased requirements lead to this deficiency.

Signup and view all the flashcards

B12 Deficiency - Aetiology

Inadequate intake, low gastric acid, or intrinsic factor issues all cause this deficiency.

Signup and view all the flashcards

Pernicious Anaemia Associations

Autoimmune destruction of parietal cells, leading to lack of intrinsic factor and B12 malabsorption.

Signup and view all the flashcards

Methotrexate and Alcohol

A drug, avoid alcohol use with methotrexate as it increases risk of liver damage.

Signup and view all the flashcards

'Blood' Transfusions

Avoid transfusions unless Hb is <70 g/l or the patient is symptomatic. Match to patient's blood group.

Signup and view all the flashcards

Normal White Cell Count

Normal range is 4.5-10 x 10^9/l.

Signup and view all the flashcards

Neutrophil Count Changes

Increase indicates bacterial infection, trauma, or surgery. Decrease indicates viral infections or drug effects.

Signup and view all the flashcards

Lymphocyte Count Changes

Increase indicates viral infections, CLL. Decrease indicates steroid use, SLE.

Signup and view all the flashcards

Thrombocytopaenia

A condition characterised by a platelet count of less than 150x10^9/l.

Signup and view all the flashcards

Dabigatran

An anticoagulant that inhibits thrombin, not reflected in INR with a a linear dose-response.

Signup and view all the flashcards

Rivaroxaban

a Direct Factor Xa inhibitor

Signup and view all the flashcards

Eosinophils: Increase

An increase in these cells is seen in some allergic disorders.

Signup and view all the flashcards

Platelet Functional Defects

Aspirin results in a functional defect.

Signup and view all the flashcards

Warfarin & Dental

Warfarin requires monitoring via INR, which should be 4 or less. Local hemostatic measures are recommended

Signup and view all the flashcards

Dabigatran & Bleeding

If twice a day, miss morning dose, give evening dose if >4 hours post haemostasis.

Signup and view all the flashcards

Rivaroxaban: Daily dose

Delay the morning dose, give the dose 4 hours post hemostasis.

Signup and view all the flashcards

Rivaroxaban - Evening Dose

Give dose at usual time in the evening, so long as it is >4 hours post-haemostasis.

Signup and view all the flashcards

ESR Calculation

Age/2 (men), (Age+10)/2 (women)

Signup and view all the flashcards

Full Blood Count (FBC)

A test that assesses the components of blood, including red cells, white cells, and platelets.

Signup and view all the flashcards

Possible Causes of Iron Deficiency

Either through dietary deficiency, malabsorption, or chronic blood loss.

Signup and view all the flashcards

Folate Food Sources

Folate has a shorter storage time in the body: leafy vegetables, liver and fruit.

Signup and view all the flashcards

Source of B12

B12 has a long term storage time in the body and found in animal proteins

Signup and view all the flashcards

Normal Haemoglobin levels

The normal ranges: Male 130-180g/l, Female 110-180g/l

Signup and view all the flashcards

Normal MCV

The normal range is 77-87 fl.

Signup and view all the flashcards

Methotrexate & Alcohol

A drug that, if combined with alcohol, significantly elevates the risk of liver damage.

Signup and view all the flashcards

Myelodysplasia

A condition resulting from ineffective blood cell production in the bone marrow.

Signup and view all the flashcards

Neutrophils: Increase

In bacterial infections, trauma or surgery a high count is seen.

Signup and view all the flashcards

Lymphocytes: Increase

In viral infections, CLL a high count is seen.

Signup and view all the flashcards

Normal Platelet Count

Normal range is 150-400 x 10^9/l

Signup and view all the flashcards

Platelet Transfusions

Used when platelet count < 50 x 10^9/l.

Signup and view all the flashcards

Liaise with haematologist

When in doubt, it is important to do this.

Signup and view all the flashcards

Sickle Cell Anemia

A condition where red blood cells sickle due to decreased oxygen tension, leading to infarction.

Signup and view all the flashcards

Tranexamic Acid

Stops clot breakdown; used as mouthwash or on gauze.

Signup and view all the flashcards

NSAIDs & Bleeding Disorders

Avoid these due to their antiplatelet effects, increasing bleeding risk.

Signup and view all the flashcards

Liver Disease & Bleeding

Acquired bleeding disorders from reduced clotting factors due to liver damage include Factors II, VII, IX, X, protein C and S, vitamin K, antithrombin.

Signup and view all the flashcards

Haemophilia A/B

Congenital deficiency of Factor VIII (A) or IX (B) that prevents the stabilization of the platelet plug

Signup and view all the flashcards

Platelet Count Threshold

In low platelet count, delay non-urgent surgery if reversible; safe if > 50 x 10^9/l.

Signup and view all the flashcards

Vascular Defects

Inherited or acquired conditions affecting the structure or function of blood vessels, leading to bleeding issues.

Signup and view all the flashcards

Haemophilia A Treatment

Replacement of deficient Factor VIII and possible use of DDAVP in mild cases.

Signup and view all the flashcards

Haemophilia B Treatment

Replacement of deficient Factor IX, DDAVP is ineffective.

Signup and view all the flashcards

VWD Subtypes

Severity is classified into subtypes 1, 2, and 3, with varying levels and functionality of VWF.

Signup and view all the flashcards

VWD Management

Treatment may include DDAVP, vWF factor replacement, Factor VIII supplementation, and antifibrinolytic drugs.

Signup and view all the flashcards

Heparin Monitoring

An anticoagulant whose effects are measured by APTT.

Signup and view all the flashcards

DOACs & Low Risk Procedures

For simple extractions (1-3 teeth) and incision & drainage, the risk of bleeding is low so DOACs are a good choice.

Signup and view all the flashcards

DOACs and High Bleeding Risk

Complex extractions, flap raising, gingival re-contouring and biopsies.

Signup and view all the flashcards

Haematological Issues

Always consult with specialist for advice.

Signup and view all the flashcards

Study Notes

White Cell Fractions and Action

  • Increases in neutrophil counts indicates bacterial infection, trauma, or surgery.
  • Decreases in neutrophil counts correlates with viral infections or the use of certain drugs.

Haemophilia Management

  • Maintain close communication with the Haemophilia Centre for all patients
  • Administer DDAVP infusion for cases of mild haemophilia.
  • Factor VIII or IX replacement is necessary for moderate to severe cases, monitor levels during treatment.
  • Employ atraumatic surgical techniques.
  • Apply local haemostatic measures.
  • Prescribe oral tranexamic acid or a tranexamic acid mouthwash.

Management of vWD Patients

  • Maintain close communication with the Haemophilia Centre and document all communications.
  • DDAVP infusion is indicated for type I vWD, a mild yet common type. Employ atraumatic surgical techniques.
  • Apply local haemostatic measures.
  • Prescribe oral tranexamic acid or a tranexamic acid mouthwash.
  • If required VWD replacement measures should be considered.

Palteate Issues and Management

  • Before starting the application of treatment, identify the cause of any palette issues.
  • In many cases paltelet conditions are often reversible - therefore its safe to delay treatment or consider a non-urgent surgery
  • A platelet count > 50 x 109/l is generally considered safe for surgery.
  • Aspirin may resolve Functinal defects.
  • Other defects may be rare but in these cases platelet transfusions or DDAVP may be needed

Platelet Abnormalitys

  • Management should include a Close liaison with the Haemophilia Centre
  • Some treatments needed include plateaet replacement, with plateaet transfusion or DDAVP
  • Apply atraumatic surgical techniques, such as less aggressive extraction methods.
  • Employ Local haemostatic measures techniques such as gel foams or sutures are helpful.
  • Also prescribe Oral tranexamic acid or a tranexamic acid mouthwash for its anti-fibrinolytic properties. Treat the patients for any other underlaying conditions first.

DRUGS to manage the conditions

  • For Warfarin type treatments, INR needs to be 4 or less, always combined with local haemostatic measures.
  • While Employing Heparin it should be measured by APTT.
  • Is importnat concider the use of Low molecular weight heparins

Direct Oral Anticoagulants (DOACs)

  • These methods should employ Direct Oral Anticoagulants (DOACs)

Thrombin Treatment of Thrombocytopenia

  • Dabigatran can be employed and is a Thrombin inhibitor
  • Effects of Dabigatran is Not reflected in INR
  • As standard practice Its a Linear dose-response treatment

Alternate Treatment of Thrombocytopenia

  • Rivaroxaban may also help patients with this conditions
  • This is known to a Direct Factor Xa inhibitor in treatment type

Treat ment depanding on the risks on Thrombocytopenia

  • Simple extractions (1-3 teeth) can help Patients with DOACs, and with a Low Risk of bleeding (SDCEP)
  • If treatment requires an Incision and drainage this is a lower risk technique
  • Further more a Detailed perio. examination can also help without great risk
  • A RSI procedure is known to maintain patient comfort with little impact
  • Patients may also Employ Restorations with sub-gingival margins

High Risk Treatments in Thrombocytopenia

  • It Is key to Employ Treatmetns where possible which have a DOACs-Lower risk of bleeding standard proceedure
  • Higher risk treatments include: Complex/adjacent extractions
  • Furthermore consider patients with a Flap raising procedures
  • It has be shown that Patients having Gingival re-contouring are very likeley candidates for an infection
  • As a results Patients having Biopsies may have post operative risks after their procedure

Action where patients are high risks and using Dabigatran

  • Dabigatran- if treating a patient and there dosage twice a day, advise the patient to miss their morning dose and ensure that they give themseclves the evening dose- providing is > 4 hours after providing of haemostasis

Action where is high risk and Rivaroxaban is being used On a day -morning schedule

  • Its vital to Delay a patients morning dose- provide a dose four hours post haemostasis after there treatment if treating on a day-morning schedule

Action where is high risk and Rivaroxaban is being used On a day -evening schedule

  • Its essential that when treating a patient on a a day-evening to give dose to your patients at their usual time in the evening. But only do this when treatment/the evening time provides a greater than (>) Four hours. Its important to post provide haemostasis with its proceedure.

Key to determining treatment - Erythrocyte testing

  • In short with the Erythrocyte Sedimentation Rate (ESR): it’s a non-specific indicator of a presence of a disease
  • However its still important to concuider It’s an age dependent testing regime
  • Determination should go as following: Men = Age divide by 2, for woen = Age +10 divided by 2

Summary of Treatment Management

  • Upon Summary numerous Haematological issues do impact on dental practice, always concider these before applying treatments
  • When there is a doubt about application: always liaise with a qualified haematologist and document all changes

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Description

Explore anaemia, its causes related to low haemoglobin, and normal FBC appearance. Learn about iron deficiency anaemia, characterised by low Hb, MCV, and ferritin levels. Understand normal blood count values and terminology like 'cytosis' and 'paenia'.

More Like This

Anemia Causes and Characteristics
10 questions
Hematology Quiz: Blood Counts and Anemias
41 questions
Use Quizgecko on...
Browser
Browser