Novel Technique to Evaluate Pulmonary Vascular Resistance in a Patient With Aortopulmonary Window

Penk, J.; Wax, D.; Gilbert, C.; Duffy, C. E.

World J Pediatr Congenit Heart Surg. 2015 Nov 21; 7(2):223-6

Abstract

We report a case of a 15-month-old female presenting with a large aortopulmonary window during a medical mission. The optimal surgical correction for this patient would be based on an estimation of her pulmonary vascular reactivity. This report details the use of antegrade/retrograde flow ratios using Doppler measurements in the proximal descending aorta at baseline and while receiving 100% oxygen. A large increase in the proportion of retrograde flow under the 100% oxygen condition suggested a reactive pulmonary vascular bed. She underwent a complete repair with patch closure of the aortopulmonary window. A postoperative echocardiographic assessment showed near normal right ventricular pressures.

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