Hematology Flashcards
(295 cards)
What are sx of anemia based on
Severity of disease
Sx w/ HCT >30-35
None
Sx w/ HCT 25-30
Dyspnea worse on exertion
Fatigue
Sx w/ HCT 20-25
Lightheadedness
Angina
Sx w/ HCT
Syncope
CP
What kills you in anemia
MI
What conditions are indistinguishable for myocytes in the heart
Anemia
Hypoxia
CAD
Carbon monoxide poisoning
First clue to etiology of anemia
MCV
Causes of low MCV
Fe def
Thalassemia
Sideroblastic anemia
AOCD
Only microcytic anemia with elevated retic count
Alpha-thalassemia
Causes of high MCV
B12/Folate def Sideroblastic anemia Alcohol Azathioprine, 6-MP, hydroxyurea Liver disease/hypothyroidism Zidovudine, phenytoin MDS
2 main causes of normocytic anemia acutely
Blood loss
Hemolysis
Retic count in normocytic anemia
Elevated when there is hemolysis
Treatment for severe anemia
pRBCs
When do you transfuse anemic pt
Symptomatic
HCT 25-30 in elderly pt or one w/ heart disease
What is symptomatic anemia
SOB
Lightheadedness, confusion, syncope
Hypotension, tachy
CP
What to transfuse for IgA def pts
IgA def donor FFP
HCT of pRBCs
70-80%
Whole blood w/ 150mL plasma removed
Effect of pRBC on HCT
Each unit raises HCT by 3 points
Who doesn’t get FFP
Hemophilia A, B
Von Willebrand
What does FFP replace
Clotting factors
What does cryoprecipitate replace
Fibrinogen (for DIC)
Has high VIII and VWF
MCV in microcytic anemia
Decreased
What is the main reason for Fe def anemia
Blood loss