Table 1 Characteristics of patients included in the study
From: Lung and diaphragm ultrasound as predictors of success in weaning from mechanical ventilation
Variables | All patients (69) | SW (44) | FW (25) | P value |
|---|---|---|---|---|
Sex (men)a | 43 (62.3) | 26 (63.4) | 15 (62.5) | 0.8 |
Age (years)b | 66 (53, 78) | 65 (53, 78) | 69 (64, 78) | 0.37 |
Time on MV (days)b | 4 (3, 7) | 4 (2, 6) | 5 (3, 9) | 0.04 |
Time SBT-extubation (minutes)b | 120 (30, 120) | 120 (30, 120) | 60 (30, 120) | 0.15 |
Mode of STB | ||||
T−T | 29 (42%) | 17 (38.6%) | 12 (48%) | 0.14 |
PS 8 and PEEP 5 | 34 (49%) | 21 (47.7%) | 13 (52%) | |
T−T + PS 8 PEEP 5 | 6(9%) | 6 (13.6%) | 0 | |
Comorbiditya | ||||
Chronic heart disease | 18 (26) | 14 (31.8) | 4 (16) | 0.25 |
Neurological disease | 18 (26) | 12 (27.3) | 6 (24) | 0.99 |
COPD | 13 (18.8) | 5 (11.4) | 8 (32) | 0.05 |
Diabetes mellitus | 19 (27.5) | 12 (27.3) | 7 (28) | 0.99 |
Cancer | 8 (11.6) | 4 (9.1) | 4 (16) | 0.45 |
Chronic kidney failure | 12 (17.4) | 6 (13.6) | 6 (24) | 0.33 |
Liver disease | 8 (11.6) | 3 (6.8) | 5 (20) | 0.36 |
Pathology at ICU admissiona | ||||
Neurological disease | 29 (42) | 18 (41) | 11 (44) | |
Respiratory disease | 24 (34, 8) | 16 (36.4) | 8 (32) | |
Cardiovascular disease | 10 (14.5) | 8 (18.2) | 2 (8) | 0.7 |
Sepsis | 7 (10.1) | 5 (11.4) | 2 (8) | |
Digestive pathology | 4 (5.8) | 1 (2.3) | 3 (12) | |
Polytrauma | 1 (1.4) | 1 (2.3) | 0 | 0.7 |
LUSmb | 6 (4, 8) | 5 (3, 7) | 8 (7, 11) | 0.0001 |
TI (%)b | 36 (27, 41) | 38 (31, 45) | 27 (20, 40) | 0.003 |
APACHE II on SBT dayb | 4 (2, 6) | 4 (2, 6) | 5 (3, 9) | 0.07 |
VE (L/min)b | 8.6 (7.5, 10) | 8.25 (7.3, 9.8) | 9 (8.1, 11.6) | 0.13 |
Compliance (mL/cm H2O)b | 56 (41, 67) | 55.5 (43, 69) | 59 (40.5, 67) | 0.86 |
PIMax (cm H2O)b | − 25 (− 23, − 25) | − 25 (− 25, − 18) | − 25 (− 26, − 24) | 0.28 |
P0.1 (cm H2O)b | 1 (1, 3) | 1 (1, 3) | 1.5 (1, 2.5) | 0.47 |
RSBI (breaths/min/L)b | 35 (20, 50) | 31 (20, 43) | 37 (30, 54) | 0.16 |
RR (breaths/min)b | 17 (15, 20) | 17 (14, 19) | 19 (16, 22) | 0.09 |
Tidal volume (ml)b | 400 (450, 585) | 508 (452, 572) | 500 (440, 600) | 0.71 |
FiO2 (%)b | 30 (28, 35) | 30 (28, 35) | 30 (28, 35) | 0.83 |
SpO2 (%)b | 98 (97, 100) | 99 (97, 100) | 97 (96, 99) | 0.027 |
PaCO2 (mm Hg)b | 40 (36, 46) | 41 (36, 45.6) | 39.6 (37, 45) | 0.63 |
PaO2, (mm Hg)b | 93 (79, 115) | 96.5 (83, 117) | 92 (74, 115) | 0.61 |
pHb | 7.42 (7.32, 7.47) | 7.4 (7.3, 7.5) | 7.4 (7.4, 7.4) | 0.93 |
Lactate (mmol/L)b | 1.2 (1, 1.7) | 1.2 (1, 1.5) | 1.3 (1.1, 2) | 0.2 |
ICU mortalitya | 7 (14) | 1 (2.3) | 6 (24) | 0.005 |
Hospital mortalitya | 11 (16) | 3 (6.8) | 8 (32) | 0.003 |
ICU stay (days)b | 11 (7, 19) | 8 (6, 15) | 18 (11, 21) | 0.002 |
Hospital stay (days)b | 19 (14, 30) | 17 (13.5, 31) | 23 (17, 30) | 0.08 |