M Engoren1. 1. Departments of Anesthesiology and Internal Medicine, St. Vincent Mercy Medical Center, Cherry, OH, USA. engoren@pol.net
Abstract
OBJECTIVE: The purpose of this study is to determine the accuracy of the cuff-leak test in a cardiovascular ICU. METHODS: Five hundred twenty-four patients were tested immediately before being extubated 531 times. The cuff-leak test was performed with the ventilator set in assist-control mode at a tidal volume (VT) of 10 to 12 mL/kg. The leak was taken to be the difference between the preset inspiratory VT and the average of the three lowest of the subsequent six expiratory VTs. A leak </= 110 mL was considered to be a positive leak test. RESULTS: None of the 20 patients with a positive leak test developed problems. Three patients had postextubation stridor. Their leaks were 433, 312, and 350 mL. CONCLUSION: The cuff-leak test is inaccurate and cannot be recommended for routine use in this population.
OBJECTIVE: The purpose of this study is to determine the accuracy of the cuff-leak test in a cardiovascular ICU. METHODS: Five hundred twenty-four patients were tested immediately before being extubated 531 times. The cuff-leak test was performed with the ventilator set in assist-control mode at a tidal volume (VT) of 10 to 12 mL/kg. The leak was taken to be the difference between the preset inspiratory VT and the average of the three lowest of the subsequent six expiratory VTs. A leak </= 110 mL was considered to be a positive leak test. RESULTS: None of the 20 patients with a positive leak test developed problems. Three patients had postextubation stridor. Their leaks were 433, 312, and 350 mL. CONCLUSION: The cuff-leak test is inaccurate and cannot be recommended for routine use in this population.
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