Table 2 Details of ventilation during anaesthesia
From: Current ventilation practice during general anaesthesia: a prospective audit in Melbourne, Australia
|  | All patients N = 272 | GA N = 262 | GAETT =200 | GA ETT High risk N = 81 |
|---|---|---|---|---|
Height (cm) | 170 (162–176) | 170 (162–176) | 170 (162–175) | 170 (162–175) |
Absolute weight (kg) | 75 (67–89) | 75 (67–88) | 78 (67–90) | 79 (65–89) |
Ideal body weight (kg) | 52.9 (48.6-58.6) | 52.9 (48.6-58.6) | 53.8 (48.4-58.7) | 54.3 (48.4-58.5) |
Body mass index (kg/m 2 ) | 26 (24.4-30.8) | 25.9 (23.4-30.0) | 26.2 (23.8-31.2) | 26.3 (23.4-31.1) |
Patient-ventilator interface (%) | Â | Â | Â | Â |
ETT | 200 (73.5) | 200 (76.3) | 200 (100) | 81 (100) |
LMA | 41 (15.1) | 41 (15.6) | 0 | 0 |
Mask | 17 (6.3) | 17 (4.5) | 0 | 0 |
Tracheostomy | 1 (0.4) | 1 (0.4) | 0 | 0 |
Nil (including rigid bronchoscopy) | 11 (4.1) | 1 (0.4) | 0 | 0 |
Unknown | 2 (0.7) | 2 (0.8) | 0 | 0 |
FiO 2 | 0.60 (0.5-0.7) | 0.60 (0.50-0.70) | 0.60 (0.50-0.70) | 0.60 (0.50-0.75) |
Ventilation mode (%) | Â | Â | Â | Â |
VCV | 148 (54.4) | 148 (48.9) | 146 (73) | 59 (72.8) |
PCV | 54 (19.4) | 54 (20.6) | 46 (23) | 17 (21) |
PSV | 10 (3.7) | 10 (3.8) | 2 (1) | 2 (2.5) |
SV | 47 (17.3) | 37 (14.1) | 0 | 0 |
Jet | 1 (0.4) | 1 (0.4) | 0 | 0 |
Unknown | 12 (4.8) | 12 (4.6) | 6 (3) | 3 (3.7) |
Absolute tidal volume (ml) | 500 (450–550) | 500 (450–550) | 500 (468–471) | 500 (475–578) |
Tidal Volume (ml/kg lean body mass) | 9.5 (8.5-10.4) | 9.5 (8.5-10.4) | 9.7 (8.6-10.5) | 9.8 (8.6-10.7) |
Respiratory Rate (b/minute) | 12 (10–12) | 12 (10–12) | 12 (10–12) | 11 (10–12) |
PEEP Yes (%) | 146 (53.7) | 146 (55.7) | 132 (66Â %) | 51 (63) |
PEEP (cmH 2 0) | 5.0 (4.0-5.0) | 5.0 (4.0-5.0) | 5.0 (4.0-5.0) | 5.0 (4.0-5.0) |
Peak inspiratory pressure (cmH 2 0) | 18 (15–22) | 18 (15–22) | 19 (16–22) | 19 (16–22) |