TYK207
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Which of the following is MOST LIKELY to be correct?
a) Systolic murmurs are more likely than diastolic murmurs to be pathological
b) Cyanosis is due to a left-to right shunt
c) Intravenous induction is slower in patients with a right-to-left shunt
d) Inhaled nitrous oxide causes pulmonary vasoconstriction
e) Anemia increases the risk of venous thrombosis
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Answer
Answer e. Diastolic murmurs are more pathological, whilst cyanosis is seen due to a right-to-left shunt. With right-to-left shunts, an IV bolus of medication will bypass the pulmonary vascular bed and act faster at the effector site. Nitric Oxide is a potent pulmonary vasodilator. Anemia, together with young age and dehydration, all act to increase the risk of venous thrombosis.
Notes
- This question originally printed in the Pediatric Anesthesiology Review Topics kindle book series, and appears courtesy of Naerthwyn Press, LLC.