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Flashcards in Hematology Deck (51)
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1

What conditions will you see basophilic stippling with?

-Lead poisoning
-Thallasemia
-EtOH abuse

2

Treatment of lead poisoning?

-Adults: EDTA or succimer
-Kids: Dimercaprol (iron chelation)

3

If a peripheral blood smear shows microcytic, hypo chromic anemia with basophilic stippling, what should you suspect?

Lead poisoning

4

What medication can be given to sickle cell patients to decrease vasoocclusive crises?

hydroxyurea (increases the hemoglobin F production)

5

What medication are children with sickle cell given until the age of 5?

Penicillin (as prophylaxis for pneumococcal infection)

6

What vaccines are important for kids with Sickle Cell?

"Please Hit My Infection"
-pneumococcal
-HiB
-Meningococcal
-Influenza

7

What drugs can cause hemolysis in G6PD patients?

"Spleen Purges Nasty Inclusions From Damaged Cells"
-Sulfonamides
-Primaquine
-Nitrofurantoin
-Isoniazid
-Fava Beans
-Dapsone
-Chloroquine

8

Howell-jolly bodies are seen in what condition?

Hereditary spherocytosis

9

Bite cells and Heinz bodies?

G6PD deficiency

Heinz bodies (oxidative stress --> clumps of hemoglobin)
-bite cells (from splenic removal heinz bodies)

10

Transfusion reaction where IgE antibodies attack soluble antigens in donor plasma? Tx?

-Urticarial reaction
-Tx: diphenhydramine
(can continue reaction if urticaria resolves)

11

If a patient with IgA deficiency receives blood with IgA antigens, what reaction is likely to occur?

-Anaphylaxis (2/2 anti-IgA IgG antibodies in recipient)

12

What is the cause of non hemolytic febrile reaction? When is this seen?

-cytokines produced by stored donor cells cause fever, chills, malaise 1-6 hours after transfusion

13

What is the most common cause of acute hemolytic reaction? What are the symptoms?

-ABO incompatibility (2/2 clerical error)
-hemolysis, fever, chills, tachycardia, tachypnea, hypotension

14

What is the cause of fever, hemolysis or elevated indirect bilirubin 2-10 days after a blood transfusion?

-Anti-kidd or and-D(Rh) antibodies
-"delayed hemolytic reaction"
-No treatment needed

15

Findings in hemolytic anemia?

inc LDH, inc indirect bili, Dec haptoglobin, inc reticulocyte count

16

What can a parvovirus B19 infection lead to? What patients are more likely to experience this?

Aplastic anemia (pancytopenia)
-sickle cell and hereditary spherocytosis

17

What is the diagnostic test for aplastic anemia? What will it show?

bone marrow biopsy--> hypocellularity and fatty infiltration

18

What labs are elevated in a B12 deficiency? How does this differ from folate deficiency?

Methylmalonic acid and homocysteine
-folate deficiency will have an elevated homocysteine and normal methymalonic acid

19

Microcytic anemia + neuro symptoms?

Lead poisoning

20

What is the cause of ITP?

anti-platelet IgG antibodies

treatment is normally glucocorticoids and IVIG or platelet transfusion if bleeding

21

What are the clinical features of HUS?

-hemolysis, uremia (renal failure) and thrombocytopenia

22

What are the clinical features of TTP?

Hemolysis, uremia (renal failure), thrombocytopenia, neurological sequelae (AMS, seizures, coma) and fever

23

What is the treatment for HUS and TTP?

Plasma exchange and glucocorticoids

24

What other 2 less critical disorders should be considered as differentials in a patient with thrombocytopenia?

Alcoholism and B12 deficiency

25

What are the causes of DIC?

"STOP Making Thrombi"
Sepsis
Trauma
OB complications
Pancreatitis
Malignancy
Transfusions

26

Treatment for von Willebrand Disease?

DDAVP (desmopressin)

27

How does hemophilia A affect PT and PTT?

Increase PTT

28

How does von willebrand affect PT, PTT, platelet count and bleeding time?

Normal platelet count, increases bleeding time, normal PT, increases PTT

29

How does DIC affect platelet count, PT, PTT and bleeding time? Fibrinogen?

Decreases platelet count. Increases bleeding time, PT and PT. Decreases fibrinogen

30

How does end stage liver disease affect PT and PTT?

Increases PT and PTT