Hypoxaemia after Partial Gastrectomy.
نویسندگان
چکیده
After partial gastrectomy there is hypoxaemia which persists for many days. This occurs in patients without complications as well as in those who develop pulmonary collapse; and although pulmonary mechanical function is much impaired as a result of the operation in both, in neither is post-operative hypoxaemia due to inadequate alveolar ventilation since the arterial (alveolar) CO2 tension is normal or even reduced (Palmer and Gardiner, 1964). The degree of hypoxaemia does not strictly parallel the reduction in pulmonary mechanical function, and it is not apparently due to a reduction in diffusing capacity (Asmussen and Nielsen, 1960). It has been suggested that it arises because the inspired air and pulmonary blood do not meet in the correct proportions in the lung, i.e., there is within the lung a disturbance of the normal ventilation to perfusion relationship (Nunn and Payne, 1962). Because arterial oxygen-tension measurement is a more sensitive method of detecting hypoxaemia at the upper end of the haemoglobin oxygen dissociation curve than oxygen-saturation measurements, we have measured arterial oxygen tensions directly and have studied the effect of ventilation to perfusion imbalance by measuring alveolararterial oxygen-tension differences and physiological dead-space to tidal-volume ratios in patients who had a partial gastrectomy.
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ورودعنوان ژورنال:
- Thorax
دوره 20 شماره
صفحات -
تاریخ انتشار 1965