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KMID : 0385920100210060795
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Journal of the Korean Society of Emergency Medicine
2010 Volume.21 No. 6 p.795 ~ p.800
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Effectiveness, Preference and Ease of Passive Release Techniques Using a Syringe for Endotracheal Tube Cuff Inflation
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Park Kyung-Choon
Son Yoo-Dong
Ahn Hee-Cheol
Ahn Ji-Yun
Park Seung-Min
Cho Kwang-Yun
Kwon-Hyuk Sool
Cho Gyu-Chong
Choi Jung-Tae
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Abstract
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Purpose: Inappropriate cuff inflations cause many complications. A conventional pilot balloon palpation technique is insufficient to detect high cuff pressures, but is still preferred. Hence, we conducted this study to identify effectiveness, preference and ease of use of a new estimation technique named “passive release technique” for endotracheal tube cuff inflation.
Methods: Twenty-nine nurses inflated cuffs by a pilot balloon palpation technique in manikins inserted with a 7.5 mm endotracheal tube. Then, being educated about passive release techniques, they inflated cuffs using such a passive release technique. Intracuff pressures and air volumes were measured by manometers and syringes. Preference and ease of use between the two methods were scored using a 10-point Likert scale.
Results: For the pilot balloon palpation technique, only 4 nurses (13.8%) inflated cuffs within the normal range of pressures (normal: 15 to 30 mb) with an average of 39.3± 34.0 cmH2O. For the passive release technique, 19 nurses (65.5%) inflated cuffs within the normal range of pressures with an average of 24.2±9.3 cmH2O (McNemar’s test, p<0.01). In the pilot balloon palpation technique, inflated air volumes of 7.8±2.0 ml were not significantly different from inflated air volumes 8.5±1.2 ml (p=0.07) for the passive release technique. But the difference was found to be statistically significant in a variance ratio test (F-test) (p<0.01). In view of preference and ease of use between the two methods, mean values were not statistically different, 7.3± 2.0 vs. 7.0±2.0 and 7.0±2.3 vs. 7.3±2.4, respectively.
Conclusion: When direct intracuff measurement is not available, a passive release technique using a syringe is an effective and easy method to achieve cuff inflation.
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KEYWORD
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Education, Intubation, Pressure
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