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Effect of Apneic Oxygenation via Nasal Prong on Gas Exchange and Vital Signs during Fiberoptic Intubation under General Anesthesia

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Authors
Lee, Sang Chul; Yum, Kwang Won; Kim, Kwang Woo
Issue Date
1992-03
Publisher
Seoul National University College of Medicine
Citation
Seoul J Med, Vol.33 No.1, pp. 65-71
Keywords
Apneic oxygenationNasal prongGas exchangeVital signsFiberoptic intubation
Abstract
A clinical study for the evaluation of the effect of apneic oxygenation by
nasal prong during fiberoptic orotracheal intubation on gas exchange and vital signs
has been done on the patients who received tympanomastoidectomy (ASA c1assfication
1 and 2, aged from 20 to 40). Among them, 22 patients were selected whose fiberoptic
intubation lasted more than 3 but less than 4 minutes, to observe the changes of Pa02,
PaC02, HR, and MAP. 11 patients who underwent fiberoptic orotracheal intubation in
apneic state without oxygen administration (Group I) showed similar increases in vital
signs to the other 11 patients who received apneic oxygenation (Group II). PaC02
increased more in Group I than in Group II, which was not statistically significant. The
differences of Pa02 at 1 and 2 minutes between two groups after removal of oxygen
mask and beginning of fiberoptic intubation, were not statistically significant but Group
II showed a significantly lesser degree of decrease in Pa02 at 3 minutes.
We might say that apneic oxygenation during fiberoptic intubation under general
anesthesia is useful because it could delay the onset of hypoxia, thereby provide extra
time for intubation. Therefore we could attempt intubation up to 3 minutes on the fully
relaxed patient, if we give oxygen via nasal prong.
ISSN
0582-6802
Language
English
URI
https://hdl.handle.net/10371/6350
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College of Medicine/School of Medicine (의과대학/대학원)Dept. of Medicine (의학과)The Seoul Journal of MedicineThe Seoul Journal of Medicine Vol. 33 No.1 (1992)
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