Clinical application of spontaneous breathing trial in patients weaning from mechanical ventilation

Objective To find a reasonable weaning way through comparing mechanical ventilation patients treated by spontaneous breathing trials(SBT)with those treated by SIMV gradual weaning. Methods One hundred and twenty six mechanical ventilation patients were divided into SBT group and control group (SIMV group) ,then the average duration of mechanical ventilation,the average time in ICU,the ventilator associated pneumonia(VAP)rate as well as the re -intubation rate within 48 hours were recorded,and finally SPSS 13. 0 was used to make statistical analysis. Results The average mechanical ventilation duration of SBT group and control group were (3.9 ± 1.9) days and (5. 6 ± 2. 2) days respectively, the average time in ICU were (5. 5 ±2. 4) days and (7. 4 ±3. 0) days respectively,the VAP rate was 11.3% and 26. 6 % respectively and the re-intubation rate within 48 hours was 9. 7% and 10. 9% respectively. Conclusions SBT weaning is superior to SIMV gradual weaning in short duration of mechanical ventilation,short time in ICU and low VAP rate. And there is no statistically significant difference in the re -intubation rate within 48 hours. Key words: Spontaneous breathing trial ;  Mechanical ventilation ;  Ventilator associated pneumonia ;