[Clinical experience of spontaneous breathing trial in weaning mechanical ventilation].

Oct 23, 2009Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue

Clinical experience with spontaneous breathing tests during mechanical ventilation weaning

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Abstract

Patients undergoing the spontaneous breathing trial (SBT) weaning mode experienced a significantly shorter mechanical ventilation duration of 59.4 hours compared to 111.4 hours in the classical weaning mode.

SBT weaning mode reduced the length of ICU stay to an average of 8.0 days, compared to 15.3 days with classical weaning.
The rate of ventilator-associated pneumonia (VAP) was 16.7% in the SBT group and 38.0% in the control group, though this difference was not statistically significant.
The SBT group had a retubing rate of 5.0% within 48 hours, compared to 19.4% in the classical weaning group, but this was also not statistically significant.
ICU mortality rates were similar between the two groups, at 25.0% for SBT and 24.0% for classical weaning.

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OBJECTIVE: To compare the spontaneous breathing trial (SBT) weaning mode with the classical weaning mode for extubation in patients undergoing mechanical ventilation.

METHODS: Fifty-seven patients showing stabilized condition after mechanical ventilation, were divided into two groups. In 21 patients, admitted from June 2004 to December 2005, a gradual decrease in respiratory support as the mode of weaning of mechanical ventilation. In 36 patients, admitted from January 2006 to March 2007, SBT weaning mode was adopted. The length of mechanical ventilation and stay in intensive care unit (ICU), ventilator-associated pneumonia (VAP) rate, retubing rate in 48 hours, ICU mortality were compared between two groups.

RESULTS: The length of mechanical ventilation were (59.4+/-37.1) hours and (111.4+/-59.8) hours (P=0.001), length of stay in ICU were (8.0+/-5.5) days and (15.3+/-14.3) days (P=0.034), VAP rate was 16.7% and 38.0% (P=0.070), retubing rate in 48 hours were 19.4% and 5.0% (P=0.253), ICU mortality rate was 25.0% and 24.0% (P=0.920) in SBT group and control group, respectively.

CONCLUSION: The SBT weaning mode shortens the time of mechanical ventilation and the ICU stay days. Both groups have the identical VAP rate, retubing rate in 48 hours, and ICU mortality.

[Clinical experience of spontaneous breathing trial in weaning mechanical ventilation].

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