Clinical Study
The Association of Postcardiac Surgery Acute Kidney Injury with Intraoperative Systolic Blood Pressure Hypotension
Table 1
Patient characteristics and procedural and renal outcome.
| | | Development sample (4864) | Validation sample () |
| | Age, median (IQR) | 65 (56–73) | 65 (57–73) | | Male | 68% | 68% | | Caucasian | 86% | 86% | | History of hypertension | 70% | 70% | | History of congestive heart failure | 17% | 17% | | History of COPD | 11% | 11% | | Previous myocardial infarction | 42% | 42% | | Prior CABG surgery | 18% | 17% | | Diabetes | 33% | 33% | | Baseline systolic, mm Hg median (IQR) | 141 (122–161) | 141 (122–161) | | Baseline diastolic, mm Hg median (IQR) | 64 (56–72) | 64 (55–72) | | Preoperative creatinine, mg/dL median (IQR) | 1.0 (0.9–1.2) | 1.0 (0.9–1.2) | | Preoperative hematocrit, % median (IQR) | 40 (36–43) | 40 (36–42) | | Body mass index, median (IQR) | 28 (25–32) | 28 (25–31) | | Intraoperative nitroprusside use | 45% | 45% | | Parsonnet risk score, (54) median (IQR) | 7 (3–12) | 7 (3–13) | | Surgery duration mins, median (IQR) | 197 (132–286) | 190 (131–288) | | CPB duration mins, median (IQR) | 106 (83–133) | 109 (85–134) | | Aortic cross-clamp time mins, median (IQR) | 60 (45–80) | 60 (46–81) | | Aprotinin given | 10% | 7% | | Intra aortic balloon counter pulsation | 9% | 8% | | CABG only on pump (%) | 86 | 86 | | CABG + valve | 6 | 6 | | Off pump | 8 | 8 |
|
|
Abbreviations: CABG: aortocoronary bypass surgery, COPD: chronic obstructive pulmonary disease, CPB: cardiopulmonary bypass, IQR: inter quartile range.
|
