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Title: Clinical Use of the Volume-Time Curve for Endotracheal Tube Cuff Management
Authors: Bolzan, Douglas Willian [UNIFESP]
Gomes, Walter José [UNIFESP]
Peixoto, Thatiana Cristina Alves [UNIFESP]
Faresin, Sonia Maria [UNIFESP]
Carvalho, Antonio Carlos de Camargo [UNIFESP]
Paola, Angelo Amato Vincenzo de [UNIFESP]
Guizilini, Solange [UNIFESP]
Universidade Federal de São Paulo (UNIFESP)
Keywords: sore throat
endotracheal tube
cuff pressure
volume-time curve, and minimal occlusive volume
Issue Date: 1-Nov-2014
Publisher: Daedalus Enterprises Inc
Citation: Respiratory Care. Irving: Daedalus Enterprises Inc, v. 59, n. 11, p. 1628-1635, 2014.
Abstract: BACKGROUND: Previous investigation showed that the volume-time curve technique could be an alternative for endotracheal tube (ETT) cuff management. However, the clinical impact of the volume-time curve application has not been documented. the purpose of this study was to compare the occurrence and intensity of a sore throat, cough, thoracic pain, and pulmonary function between these 2 techniques for ETT cuff management: volume-time curve technique versus minimal occlusive volume (MOV) technique after coronary artery bypass grafting. METHODS: A total of 450 subjects were randomized into 2 groups for cuff management after intubation: MOV group (n = 222) and volume-time curve group (n = 228). We measured cuff pressure before extubation. We performed spirometry 24 h before and after surgery. We graded sore throat and cough according to a 4-point scale at 1, 24, 72, and 120 h after extubation and assessed thoracic pain at 24 h after extubation and quantified the level of pain by a 10-point scale. RESULTS: the volume-time curve group presented significantly lower cuff pressure (30.9 +/- 2.8 vs 37.7 +/- 3.4 cm H2O), less incidence and intensity of sore throat (1 h, 23.7 vs 51.4%; and 24 h, 18.9 vs 40.5%, P < .001), cough (1 h, 19.3 vs 48.6%; and 24 h, 18.4 vs 42.3%, P < .001), thoracic pain (5.2 +/- 1.8 vs 7.1 +/- 1.7), better preservation of FVC (49.5 +/- 9.9 vs 41.8 +/- 12.9%, P = .005), and FEV1, (46.6 +/- 1.8 vs 38.6 +/- 1.4%, P = .005) compared with the MOV group. CONCLUSIONS: the subjects who received the volume-time curve technique for ETT cuff management presented a significantly lower incidence and severity of sore throat and cough, less thoracic pain, and minimally impaired pulmonary function than those subjects who received the MOV technique during the first 24 h after coronary artery bypass grafting.
ISSN: 0020-1324
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