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KMID : 0356920090560050513
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Korean Journal of Anesthesiology
2009 Volume.56 No. 5 p.513 ~ p.518
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Usefulness of new technique using a disposable syringe for endotracheal tube cuff inflation
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Huh Jin
Yoon Tae-Gyoon
Kwon Won-Kyung
Joo Young
Kim Duk-Kyung
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Abstract
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Background: Risk for injuries resulting from overinflated or underinflated endotracheal tube cuff warrants adequate cuff inflation technique. Thus, this study was designed to measure the actual intracuff pressures obtained by new estimation techniques.
Methods: 95 adult surgical patients requiring tracheal intubation were randomized to two groups with respect to the endotracheal tube model: Portex? (n = 55) and Euromedical? (n = 40). After induction of anesthesia, the cuff was inflated using new estimation techniques with two different syringes: PR10 or PR20 (passive release technique using a 10-ml or 20-ml syringe, respectively). Subsequently, an aneroid manometer was used to measure the actual intracuff pressures. These inflation techniques were repeated two times. A direct cuff measurement range of 25 to 40 cmH2O was used as a reference for optimal intracuff pressure. Size 7.0 mm internal diameter (ID) tubes were used for women and size 7.5 mm ID for men.
Results: 88 eligible patients were studied: Portex group (n = 50) and Euromedical group (n = 38). With respect to the rate of optimal cuff inflation, PR10 was significantly higher than PR20 in both groups (56% vs. 10% in Portex group; 63.2% vs. 0% in Euromedical group, respectively) (P ＜ 0.05).
Conclusions: When direct intracuff measurement is not available, a new method, named "passive release technique" using a 10-ml syringe, is a useful alternative cuff inflation method.
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KEYWORD
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Cuff pressure, Endotracheal intubation, Endotracheal tube
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