Changes in regional pulmonary blood flow during lobar bronchial occlusion in man.

1. Acute hypoxic pulmonary vasoconstriction is important in the restoration of ventilation-perfusion balance in the presence of regional alveolar hypoventilation. However, the magnitude and time course of this response in man has not been adequately characterized in regions smaller than an entire lung. We have studied the effectiveness of hypoxic… (More)