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Table 2 Characteristics of patients who underwent Z-BUF with and without dialysate as replacement fluid

From: Zero balance ultrafiltration using dialysate during nationwide bicarbonate shortage: a retrospective analysis

Characteristics Z-BUF-S (n = 39) Z-BUF-D (n = 46) p value
Age (years) 53.1 ± 13.6 62.5 ± 12.8 < 0.01
Female sex - number (%) 9 (23%) 16 (35%) 0.12
Pre-operative creatinine (mg/dL) 1.9 ± 2.4 1.6 ± 1.6 0.25
Pre-operative potassium (mEq/L) 4.2 ± 0.5 4.2 ± 0.4 0.34
Pre-operative bicarbonate (mEq/L) 26.2 ± 3 26.0 ± 3.3 0.38
Coronary Artery Bypass Grafting (CABG) – number (%) 15 (38%) 23 (50%) 0.31
Valve Repair – number (%) 13 (33%) 11 (24%)
Aortic Dissection or Aneurysm Repair – number (%) 8 (21%) 8 (17%)
Other procedure – number (%) 3 (8%) 4 (9%)
Mortality (%) 8 7 0.39
  1. Pre-operative potassium levels vary from pre-Z-BUF potassium levels (peak intraoperative). Patients who did not receive dialysate as a replacement fluid were from prior to sodium bicarbonate shortage. Patients who did receive dialysate as a replacement fluid were from after sodium bicarbonate shortage.
  2. Plus-minus values are means ± standard deviation
  3. Z-BUF zero balance ultrafiltration
  4. Z-BUF-S zero balance ultrafiltration with sodium chloride solutions
  5. Z-BUF-D zero balance ultrafiltration with dialysate solution