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Latest revision as of 02:29, 25 September 2026
The estimated circulating blood volume in a 4 month-old infant is:
a) 70 mL/kg
b) 80 mL/kg
c) 90 mL/kg
d) 100 mL/kg
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Answer
Answer b.
Infants (>3 months) have an estimated circulating blood volume of 80 mL/kg. This decreases to 75 mL/kg when they reach school age, and then decreases further to 70 mL/kg when they reach adolescence. At birth, neonates have 90 (term) to 100 (preterm) mL/kg estimated blood volume.
Notes
- This question originally printed in the Pediatric Anesthesiology Review Topics kindle book series, and appears courtesy of Naerthwyn Press, LLC.
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