Table 1.
Table 1. Baseline and surgery-related characteristics
| Total (n = 1,096) | Nephrology On-Demand (n = 558) | Nephrology On-Site (n = 538) | p value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| General characteristics | |||||||||
| Age, years | 52.4±16.2 | 52.1±16.1 | 52.7±16.3 | 0.53 | |||||
| Weight, kg | 68.4±12.7 | 69.3±12.4 | 67.6±13.0 | 0.03 | |||||
| Male gender | 615 (56.1) | 313 (56.1) | 302 (56.1) | 0.99 | |||||
| Comorbidities | |||||||||
| Diabetes mellitus | 189 (17.2) | 92 (15.5) | 97 (18.0) | 0.50 | |||||
| Hypertension | 412 (37.6) | 210 (37.6) | 202 (37.5) | 0.98 | |||||
| Chronic pulmonary disease | 21(1.9) | 16 (2.9) | 5 (0.9) | 0.02 | |||||
| Cerebrovascular disease | 50 (4.6) | 24 (4.3) | 26 (4.8) | 0.67 | |||||
| Previous myocardial infarction | 268 (24.5) | 140 (25.1) | 128 (23.8) | 0.62 | |||||
| Previous cardiac surgery | 135(12.3) | 59 (10.6) | 76 (14.1) | 0.07 | |||||
| Endocarditis | 62 (5.7) | 30 (5.4) | 32 (5.9) | 0.68 | |||||
| New York Heart Association III—IV | 123 (11.2) | 58 (10.4) | 65 (12.1) | 0.38 | |||||
| Critical preoperative state | 120 (10.9) | 63 (11.3) | 57 (10.6) | 0.71 | |||||
| Left ventricular ejection fraction, % | 56.9±11.8 | 57.2±11.3 | 56.7±12.5 | 0.47 | |||||
| Pulmonary arterial pressure, mm Hg | 35 (27–47) | 36.50 (29–50) | 35 (25–45) | <0.001 | |||||
| Glomerular filtration rate, ml/min/1.73 m2 | 91.7±22.7 | 88.8±23.6 | 94.7±21.5 | <0.001 | |||||
| Chronic kidney disease | 83 (7.6) | 54 (9.7) | 29 (5.0) | 0.007 | |||||
| Baseline SCr, µmol/l | 79.6 (61.9–97.2) | 88.4(70.7–106.1) | 70.7 (61.9–88.4) | <0.001 | |||||
| Scores | |||||||||
| Euroscore | 5 (3–5) | 5(3–6) | 5 (3–7) | 0.14 | |||||
| Thakar score | 3 (2–4) | 3 (2–4) | 3 (2–4) | 0.77 | |||||
| Surgical variables | |||||||||
| Emergency surgery | 151(13.8) | 80 (14.0) | 71(13.2) | 0.58 | |||||
| Type of surgery | 0.22 | ||||||||
| Valvular | 623 (56.8) | 310 (55.6) | 313 (58.2) | ||||||
| Coronary bypass | 234(21.4) | 118 (21.1) | 116 (21.6) | ||||||
| Coronary bypass + valvular | 49 (4.5) | 25 (4.5) | 24 (4.5) | ||||||
| Congenital heart disease | 42 (3.8) | 17 (3.0) | 25 (4.6) | ||||||
| Surgery on the aortaa | 67 (6.1) | 30 (5.4) | 37 (6.9) | ||||||
| Othersb | 148 (13.5) | 88 (15.7) | 60 (11.1) | ||||||
| Extracorporeal circulation on-pump | 973 (88.8) | 480 (86.0) | 493 (91.6) | 0.003 | |||||
| Pump time, min | 102 (75–136) | 98 (73–129) | 105(76–140) | 0.01 | |||||
| Aortic clamp time, min | 70 (50–97) | 68 (50–95.7) | 72 (51–98) | 0.48 | |||||
| Bleeding, ml | 740(500–1,140) | 730 (500–1,132.5) | 740(506.5–1,147.5) | 0.48 | |||||
| Complications | |||||||||
| Infection | 121(11.0) | 70 (12.5) | 51 (9.5) | 0.11 | |||||
| Severe infectionc | 65 (5.9) | 32 (5.7) | 33 (6.1) | 0.08 | |||||
| Reoperation | 204 (18.6) | 114 (20.4) | 90 (16.8) | 0.12 | |||||
Data are shown as n (%), mean ± standard deviation or median (25th-75th percentiles).
a
Could be in addition to other surgery.
b
Including surgery on the pericardium, isolated atrial septum defect and myxoma.
c
Including pneumonia, mediastinitis and catheter-associated bacteremia.