Unilateral absence of a pulmonary artery. Data from cardiopulmonary exercise testing.

Brassard, J M; Johnson, J E · Chest · 1993

case_report · Level V

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Abstract

A case of congenital, unilateral absence of a left pulmonary artery is described in a patient presenting with exertional dyspnea. Data from cardiopulmonary exercise testing suggest that the mechanism of dyspnea is secondary to a paradoxic elevation of the physiologic dead space to tidal volume ratio (VD/VT) during exercise.

Medical subject headings