RBC Disorders

Question 1

A reduction in red cell mass with consequent decrease in oxygen transport capacity of the blood.

Answer 1

anemia

Question 2

An increase in red cell mass

Answer 2

polycythemia

Question 3

T/F

Red cell count, hemoglobin concentration, and hematocrit directly measure the red cell mass.

Answer 3

False

These clinical parameters merely reflect the red cell mass

Question 4

What are the 3 broad categories of anemias?

Answer 4

RBC (blood) loss
Decreased RBC survival
Decreased RBC production

Question 5

Most young, healthy individuals can tolerate a rapid loss of ___-____ mL with few symptoms.

Answer 5

500-1000 (15-20% of total blood volume)

Question 6

Loss of ____-____ mL produces lightheadedness and orthostatic hypotension?

Answer 6

1000-1500

Question 7

All patients are symptomatic with a loss of 1500-2000 mL and may have…

Answer 7

thirst
shortness of breath
loss of consciousness
sweating
rapid pulse
hypotension
clammy skin

Question 8

Rapid loss of 2000-2500 produces…

Answer 8

shock

Question 9

The ________ count will be increased in the peripheral blood because blood loss stimulates increased RBC production.

Answer 9

reticulocyte

Question 10

This causes anemia when the rate of loss exceeds the capacity for RBC regeneration or when iron reserves are depleted.

Answer 10

chronic blood loss