Skip to main content

Table 1 Perioperative characteristics of the patients

From: Protective mechanical ventilation with optimal PEEP during RARP improves oxygenation and pulmonary indexes

Variables Phase 1 (n=25) Phase 2
Traditional ventilation (n=32) Protective ventilation (n=32) P (within phase 2)
Age (years) 68.6±7.6 69.9±6.8 70.3±6.4 0.441
 Range 60–84 60–83 60–82  
Weight (kg) 67.8±9.0 64.2±9.1 63.1±9.1 0.242
BMI (kg/m2) 23.5±2.7 22.6±3.1 22.5±2.6 0.274
 Range 17.0–28.7 17.1–29.9 17.0–28.3  
PBW (kg) 65.2±4.5 65.1±5.0 62.8±5.6 0.233
ASA grade
 II 24 (96%) 30 (93.8%) 30 (93.8%) 0.918
 III 1 (4%) 2 (6.3%) 2 (6.3%) 0.918
LVEF (%) 66.3±5.4 68.5±7.3 65.6±7.6 0.208
Hypertension 17 (68%) 18 (56.3%) 15 (46.9%) 0.280
Diabetes mellitus 7 (28%) 5 (15.6%) 4 (12.5%) 0.309
Coronary disease 0 2 (6.3%) 1 (3.1%) 0.429
Cerebral infarction 1 (4%) 2 (6.3%) 1 (3.1%) 0.828
Smoking history     0.458
 Never 14 (56.0%) 23 (71.9%) 21 (65.6%)  
 Former 4 (16.0%) 3 (9.4%) 4 (12.5%)  
 Current 7 (28.0%) 6 (18.7%) 7 (21.9%)  
Operation time (min) 184.3±64.4 183.2±64.7 175.4±52.6 0.843
Postoperative hospital stay (days)   8.3±3.9 9.3±3.7 0.494
Estimated blood loss (ml) 138 (30–600) 89 (50–300) 100 (50–250) 0.249
Fluids (ml) 1790 (1200–3250) 1616 (1200–2800) 1605 (1100–2250) 0.314
Need for vaspressors (n)a 10 (40%) 12 (37.5%) 10 (31.3%) 0.772
Ephedrine total dose (mg)b 7.3±2.6 6.6±1.9 7.3±2.6 0.809
Phenylephrine total dose (ug)c 83.3±57.7 87.5±47.9 75.0±50.0 0.998
Duration of CO2 pneumoperitoneum (min) 135±58 143±56 129±43 0.686
  1. BMI Body mass index, PBW Predicted body weight, ASA American Society of Anesthesiologists, LVEF Left ventricular ejection fraction
  2. aNumber of patients who received ephedrine or phenylephrine
  3. bEphedrine dose represents the mean from patients who received ephedrine
  4. cPhenylephrine dose represents the mean from patients who received phenylephrine