TYK194

The following statements for the first stage (Norwood) repair of HLHS are correct EXCEPT:

a) A goal for the surgical repair is limiting pulmonary blood flow

b) Aorto-pulmonary runoff occurs with the RV to PA conduit

c) Survival rates following the repair are above 70%

d) Aortic arch reconstruction is performed

e) Postoperative SpO2 is approximately 75-80%

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Answer

Answer b.

Aorto-pulmonary runoff occurs in the Norwood procedure with MBTS, and is further exacerbated by factors that reduce PVR. The runoff results in a fall in coronary perfusion pressure and places the ventricle at risk of ischemia. Prevention of aortopulmonary runoff is a major benefit of RV to PA conduit creation. The other statements are all correct.

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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