Question 286 · LEK · Hematopoietic system
Which of the changes in the circulatory system and haemostasis are typical of pregnancy?
- A. an approximately 45% increase in the volume of the blood, an approximately 30% increase in the total volume of erythrocytes.
- B. a decrease in the number of leukocytes, an approximately 15% increase in haemoglobin.
- C. an approximately 50% decrease in the volume of plasma, an approximately 15% increase in haematocrit.
- D. an increase in the number of blood platelets and a prolonged prothrombin time.
- E. a decrease in fibrinolysis and fibrinogen degradation products.
Hint
In pregnancy the expansion of plasma exceeds the increase in red cell mass, causing physiological haemodilution.
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