Impacto de um protocolo de desmame com o uso sistemático da ventilação não invasiva na duração da ventilação mecânica / Influence of a weaning protocol with the systematic use of the noninvasive ventilation in the length of the mechanical ventilation

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

CONTEXT: The length of mechanical ventilation and the need for reintubation were associated on the literature with a mortality increased in these patients. Weaning protocol was a recommendation to reduce the length of invasive ventilation and the risk associated with those. At the same time noninvasive ventilation (NPPV) proposed by studies as part of the weaning technique. Positive results were observes with these interventions in selected patients. However, it was not observes when NPPV was used to treat respiratory failure after extubation. AIM: Evaluate the efficacy of the weaning protocol that was developing with the use of NPPV immediately after extubation in selected patients. DESIGN, SETTINGS AND SUBJECTS: A before- after study was realized with adults patients. Data of consecutive patients mechanically ventilated for ³ 48 hours that respected the inclusion and exclusion criteria was collect. The local of the study was a medical/surgical ICU with 22 beds in a tertiary hospital. RESULTS: Comparing the pre protocol patients (74) with the post protocol patients (74) was observe in both phases the patients had similar baseline characteristics. On the protocol group was observe a reduction on the intubated days of the patients (7[4; 11, 3] vs. 6[4; 9], p=0.04) and a lower probability on these phase to maintained intubated on the length on ICU in days (p=0.02). The reintubation rate was similar on 72 hours after extubation on the groups. The mortality rate was lower (24,3% vs. 10,8, p=0,03) and the survivor was higher on the length on ICU in days (p=0,05). In a Cox model, adjusting on severity at ICU admission, the protocol was relation with the survivor on ICU (RR: 2,77; 95% confidence interval, 1,14- 6,65; p=0,03) and the reintubation rate with the no survivor patients(RR: 0,27; 95% confidence interval, 0, 11- 0,65; p=0,01). CONCLUSION: A weaning protocol, which includes NPPV immediately after extubation for selected patients, reduces the length of invasive ventilation support time without increasing the risk of weaning failure. The protocol was relation with the survivor on ICU and reintubation rate with no survivor.

ASSUNTO(S)

mechanical vetilation protocolo/mortalidade ventilação mecânica desmame/estatística &dados numérico weaning/statistics &numerical data protocol/mortality

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