TYK207

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.

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