Hema Flashcards
A patient was admitted to the ER after a vehicular crash. He complained of abdominal pain while being assessed at the ER. PE showed BP 110/60 (90/50 on standing), HR 100, RR 22, O2 saturation 99%, with abdominal hematoma. How much intravascular blood volume would be expected to be lost in this case?
a.10%
b.20%
c.30%
d.40%
30%
For Questions 2-4: An 80/M presented for workup of fatigue at the OPD. He had no history of bleeding. Tests showed Hb 90, Hct 25%, MCV 110 fL, MCH 32 pg, MCHC 33 g/dL, reticulocyte count 6.7%, platelet 140, WBC 6.0. What is the patient’s reticulocyte production index?
a.1.5
b.2.0
c. 2.5
d. 3.0
2.0
Which of the following diagnostic tests would be most appropriate to request next to narrow the differentials?
a.Bone marrow biopsy
b.Peripheral blood smear
c.Serum iron and total iron-binding capacity
d. Serum ferritin
Peripheral blood smear
Which among the following is the most likely diagnosis?
a.Iron-deficiency anemia
b.Sideroblastic anemia
c.Thalassemia
d.Vitamin B12 deficiency
Vitamin B12 deficiency
Which of the following conditions would present with an elevated reticulocyte production index?
a.Acute blood loss
b.Cardiopulmonary bypass
c.Hypothyroidism
d.Myelodysplasia
Cardiopulmonary bypass
A 75 year old patient presented with easy fatigability, palmar pallor and occasional gum bleeding. Workup showed WBC 1.0, platelet 50, RPI of 1.5, serum iron 100 µg/dL, TIBC 320 µg/dL and ferritin 100 µg/L. Peripheral blood smear shows normocytic, normochromic erythrocytes. Which bone marrow finding is consistent with the patient’s condition?
a.Hypocellular with several fat globules
b.Myeloid:erythroid ratio of 1:1
c.Erythroid hyperplasia
d.Plasmacytosis of 20%
Hypocellular with several fat globules
What is the most important predictor of bleeding risk?
a. Aspirin use
b.History of bleeding
c.Liver disease
d.Platelet count <150
History of bleeding
A male patient with a history of lower gastrointestinal bleeding and treatment 1 month ago was referred for anemia with hemoglobin 9.0 with MCV 75 fL, MCH 20 pg, ferritin 80 mcg/L. He is currently asymptomatic with no signs of recurrence of bleeding. Which is the most appropriate treatment?
a. Erythropoietin 4000 units subcutaneously three or four times a week until 3 months after anemia correction
b.Erythropoietin 1000 units subcutaneously three or four times per day until 6 months after anemia correction
c. Oral elemental iron 200 mg three or four times per day until 3 months after anemia correction
d. Oral elemental iron 60 mg three or four times per day until 6 months after anemia correction
Oral elemental iron 60 mg three or four times per day until 6 months after anemia correction
For Questions 9 and 10: An 18/M presented at the OPD for a 3-day history of a painful and swollen right knee after accidentally hitting it hard against the kitchen counter. He recalls that this happened 4 years ago, after a fall on the same knee. It was resolved after one week so work-up was not done. Laboratory results showed normal CBC and isolated prolonged aPTT. Which of the following diagnostics will confirm the diagnosis?
a. Factor VIII assay
b. Factor VII assay
c. Prothrombin assay
d. Bethesda assay
Factor VIII assay
Which of the following is least appropriate for treatment of this condition?
a. Cryoprecipitate
b. Factor replacement therapy
c. Prothrombin complex concentrate
d. Tranexamic acid
Prothrombin complex concentrate
Which set of iron studies is characteristic of iron-deficient erythropoiesis?
a.Low ferritin, low total iron-binding capacity, normal serum iron, normal transferrin saturation
b.Low ferritin, high total iron-binding capacity, normal serum iron, normal transferrin saturation
c.Low ferritin, low total iron-binding capacity, low serum iron, low transferrin saturation
d. Low ferritin, high total iron-binding capacity, low serum iron, low transferrin saturation
Low ferritin, high total iron-binding capacity, low serum iron, low transferrin saturation
In which of the following patients is bone marrow examination most useful?
a. 65 year old with fatigue and thrombocytopenia
b. 65 year old presented with pneumonia, anemia, and thrombocytopenia
c. 65 year old smoker with leukocytosis
d. 65 year old UGIB patient with leukocytosis and anemia
65 year old with fatigue and thrombocytopenia
What is the most common cause of non-iatrogenic thrombocytopenia?
a. Cancer
b.Infection
c. Immune
d. Blood loss
Infection
A 30/F presented with recurrent episodes of gum bleeding and heavy menstrual flow. Blood count showed isolated thrombocytopenia of 3. Which of the following is appropriate to include in the succeeding work-up?
a. Antibody testing
b. Bone marrow biopsy
c. Bleeding time
d. Peripheral blood smear
Peripheral blood smear
Which of the following patients with immune thrombocytopenic purpura can be treated on an outpatient basis?
a.Patient with platelet count of 40 with no bleeding
b. Patient with platelet count of 20 with no bleeding
c. Patient with platelet count of 3 and recurrent epistaxis
d. Patient with platelet count of 3 and retinal hemorrhages
Patient with platelet count of 3 and retinal hemorrhages
Which of the following is consistent with thrombotic thrombocytopenic purpura (TTP)?
a. Decreased haptoglobin
b. Decreased lactate dehydrogenase
c. Decreased reticulocyte count
d. Decreased unconjugated bilirubin
Decreased haptoglobin
A patient presented with decreasing urine output. She had a bout of gastroenteritis that was treated with ciprofloxacin 1 week ago. Workup showed creatinine 4.0 mg/dL, Hb 85, WBC 5.2, platelet 90. Peripheral blood smear showed fragmented red blood cells. Which of the following is the most appropriate treatment for their condition?
a. IV immunoglobulin
b. Plasma exchange
c. Rituximab
d. Supportive treatment
Supportive treatment
What is the central mechanism of disseminated intravascular coagulation (DIC)?
a. Intravascular fibrin deposition
b. Uncontrolled thrombin generation
c. Red blood cell damage and hemolysis
d. Consumption of platelets and coagulation factors
Uncontrolled thrombin generation
For Questions 19 and 20: A pregnant patient in the 3rd trimester presented to the ER with severe abdominal pain and bloody vaginal discharge. During her admission, she was noted to have bleeding from venipuncture sites and ecchymoses all over her body. She was also referred for an episode of tarry black stools. On work-up, her hemoglobin was 85 with platelet count of 20 and prolonged PT and PTT. Which of the following laboratory tests is the most sensitive for the most likely diagnosis?
a. D-dimer
b. Fibrinogen
c. Thrombin time
d. Peripheral blood smear
D-dimer
Which of the following blood products is NOT appropriate for the patient’s condition?
a. Clotting factor concentrate
b. Cryoprecipitate
c. Fresh frozen plasma
d. Platelet concentrate
Clotting factor concentrate
Which of the following patients with pancytopenia is most likely to present with bone marrow hypocellularity on biopsy?
a. 21 year old presenting with sepsis from anorectal infection
b. 21 year old presenting with gum bleeding
c. 72 year old presenting with fever and weight loss
d. 72 year old presenting with fatigue, weakness and pallor
21 year old presenting with gum bleeding
Which of the following patients with pancytopenia is most likely to present with bone marrow hypocellularity on biopsy?
a. 21 year old presenting with sepsis from anorectal infection
b. 21 year old presenting with gum bleeding
c. 72 year old presenting with fever and weight loss
d. 72 year old presenting with fatigue, weakness and pallor
21 year old presenting with gum bleeding
Which of the following patients with pancytopenia is most likely to present with bone marrow hypercellularity, dyserythropoietic changes, and hyposegmented granulocytes?
a. 21 year old presenting with sepsis from anorectal infection
b. 21 year old presenting with gum bleeding
c. 72 year old presenting with fever and weight loss
d. 72 year old presenting with fatigue, weakness, and pallor
72 year old presenting with fatigue, weakness, and pallor
Which of the following is a proven component of supportive care for patients with pancytopenia from aplastic anemia?
a. Gut decontamination
b. Iron chelation
c. Low-dose glucocorticoids
d. Reverse isolation
Iron chelation
In the work-up for polycythemia, which of the following laboratory findings and etiologies are correctly paired?
a. Low EPO levels: polycythemia vera
b. Low arterial oxygen saturation: smoker’s polycythemia
c. High hemoglobin oxygen affinity: renal neoplasm
d. High carboxyhemoglobin levels: hemoglobinopathy
Low EPO levels: polycythemia vera
In general, the serum cobalamin level below which megaloblastic anemia develops is:
a. 164 pmol/L
b. 148 pmol/L
c. 74 pmol/L
d. 58 pmol/L
d. 58 pmol/L
A 25-year-old woman is seen at the outpatient clinic with jaundice and dark-colored urine. 3 days earlier, she was diagnosed with UTI and was given Nitrofurantoin. 6 hours after her first dose of Nitrofurantoin, she complained of body malaise, weakness, and lumbar pain. She looked pale and icteric. CBC done showed normocytic normochromic anemia. PBS showed bizzare poikilocytes and Heinz bodies. What underlying condition can explain the patient’s clinical course?
a. Beta thalassemia
b. G6PD deficiency
c. Atypical HUS
d. Pyruvate kinase deficiency
b. G6PD deficiency