132 Chapter 6 Baseline season (n=13,440) ILI season (N=12,994) Aortic valve surgery (%) 2502 (18.6) 2458 (18.9) CABG (%) 7393 (55.0) 7120 (54.8) CABG + 1 valve (%) 1518 (11.3) 1459 (11.2) CABG + 2 valves (%) 117 (0.9) 124 (1.0) Cardiovascular surgery, other (%) 248 (1.8) 266 (2.0) Congenital defect repair (%) 74 (0.6) 60 (0.5) Mitral valve surgery (%) 924 (6.9) 898 (6.9) Pericardectomy (%) 39 (0.3) 28 (0.2) Pulmonary valve surgery (%) 34 (0.3) 34 (0.3) Tricuspid valve surgery (%) 56 (0.4) 41 (0.3) Tumor removal, intracardiac (%) 51 (0.4) 46 (0.4) Two valves (%) 484 (3.6) 460 (3.5) Supplementary Table 2. Number of different type of surgeries performed in the baseline season and ILI season Baseline season (n=13,440) Intermediate season (n=15,843) ILI season (N=12,994) P value Duration of mechanical ventilation, hours 5.6 (3.5 to 9.5) 5.7 (3.6 to 9.5) 5.6 (3.6 to 9.5) 0.42 P/F ratio at 24 hours after ICU admission 271 (214 to 339) 269 (210 to 335) 269 (210 to 332) 0.07 P/F ratio at 72 hours after ICU admission 260 (180 to 333) 270 (172 to 338) 273 (180 to 348) 0.69 P/F ratio at 7 days after ICU admission 217 (150 to 284) 233 (166 to 300) 236 (163 to 304) 0.25 Length of stay ICU, days 1.9 (1.1 to 2.8) 1.9 (1.1 to 2.9) 1.9 (1.1 to 2.9) 0.02 Length of stay hospital, days 7.6 (6.0 to 11.0) 7.6 (6.0 to 11.0) 8.0 (6.0 to 11.1) <0.0001 In-hospital mortality 165 (1.22) 247 (1.56) 224 (1.72) 0.003 ICU mortality 116 (0.86) 139 (0.88) 125 (0.96) 0.65 Ward mortality 49 (0.36) 108 (0.68) 99 (0.76) 0.0006 Supplementary Table 3. Unadjusted analysis showing differences in outcomes between baseline season, intermediate season and ILI season. Median (IQR) was used to describe continuous variables. Frequency (%) was used to summarise categorical variables.
RkJQdWJsaXNoZXIy MTk4NDMw