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Table 3 Weaning outcome

From: Variables predicting weaning outcome in prolonged mechanically ventilated tracheotomized patients: a retrospective study

Weaning outcome measures All patients (n = 263) Weaning success (n = 126) Weaning failure (n = 137) P valuea
Weaning success 126 (47.9) 126 (100)
Weaning failure 137 (52.1) 137 (100.0)
 HMV-NIV 50 (19.0) 50 (36.5)
 HMV-IMV 74 (28.1) 74 (54.0)
 Death on MV 13 (4.9) 13 (9.5)
Weaning duration from first SBT (days) 22.9 (± 16.1) 19.0 (± 11.7) 26.6 (± 18.5) < 0.001b
Duration of mechanical ventilation (days) 52.2 (± 28.6) 45.2 (± 22.1) 58.6 (± 32.1) < 0.001b
Decannulation 135 (51.3) 85 (67.5) 50 (36.5) < 0.001c
SB on discharge from hospital (hours per day)d 16.1 (± 8.9) 21.9 (± 6.5) 10.9 (± 7.5) < 0.001b
LTOT on discharge 183 (78.9) 74 (63.8) 109 (94.0) < 0.001c
Weaning unit-LOS (days) 48.3 (± 28.5) 40.8 (± 21.7) 55.1 (± 32.0) < 0.001b
Hospital-LOS (days) 52.8 (± 28.6) 45.6 (± 22.2) 59.5 (± 32.0) < 0.001b
Hospital mortality 38 (14.4) 13 (10.3) 25 (18.2) 0.068c
  1. Continuous variables are presented as mean values (± standard deviation); categorical variables are presented as number (%)
  2. aP value for differences between patients with weaning success and weaning failure
  3. bStudent’s t test
  4. cChi-squared test
  5. dValues for deceased patients were set at 0 h
  6. HMV-NIV home mechanical ventilation-non-invasive mechanical ventilation, HMV-IMV home mechanical ventilation-invasive mechanical ventilation, IMV invasive mechanical ventilation, SB spontaneous breathing, LTOT long-term oxygen therapy, SBT spontaneous breathing trial, LOS length of stay