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1 Department of Medicine, School of Medicine, Western Reserve University, Cleveland, Ohio
Increases in pulmonary vascular resistance could be produced in excised perfused ventilated dog lung lobes by lowering the alveolar Po2. When dinitrophenol was added to the perfusate a similar change in the vascular bed occurred that could be reversed by ventilating with supernormal oxygen concentrations. The similarity of the responses to dinitrophenol and lowered alveolar Po2 was demonstrated using normally and retrogradely perfused lobes. The hypoxic pressor response was shown to be independent of the Po2 of blood contained in the arteries and veins.
Note:
(With the Technical Assistance of Emily McCartney)
Submitted on August 13, 1964
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