THE INFLUENCE OF CARDIAC OUTPUT ON ARTERIAL OXYGENATION: A THEORETICAL STUDY

摘要: SUMMARY Recent measurements of cardiac output have shown that, during anaesthesia, departures from normality are common occurrence. In the presence pulmonary venous admixture, such changes may affect arterial Po2 to a considerable extent. This paper explores nature theoretical relationship between output, percentage and (A-a) difference, results draws certain conclusions: (1) Appreciable reductions in after anaesthesia be caused largely by output. (2) When allowance is made for probable it appears that admixture not greatly increased above normal range. (3) Since with anaesthetic techniques there linear Paco2 an increase alveolar ventilation under circumstances cause paradoxical decrease Po2.