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Critical care medicine · Oct 1985
Real-time analysis of the change in arterial oxygen tension during endotracheal suction with a fiberoptic bronchoscope.
- T Arai, Y Hatano, K Komatsu, T Takada, C Miyake, T Harioka, and K Reshad.
- Crit. Care Med. 1985 Oct 1; 13 (10): 855-8.
AbstractAn intra-arterial Clark-type polarographic oxygen electrode was used with a fiberoptic bronchoscope for real-time analysis of the PO2 change during 1 min of suction in patients spontaneously breathing oxygen. There was a strong correlation between values obtained from the intra-arterial electrode (PiO2) and those from blood samples (PaO2), before and at the end of suction; the PiO2/PaO2 ratio was close to one. Continuous PiO2 recordings during suction without supplemental oxygen showed little change in the early period of suction, followed by a steep drop continuing even after suction. This drop in PiO2 was partially attenuated by providing oxygen with high-frequency jet ventilation and was almost completely attenuated by the use of a suction adaptor. Changes in the inspired oxygen concentration indicated the importance of keeping this variable constant during suction to prevent hypoxemia.
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