Association between Blood Potassium Level and Recovery of Postoperative Gastrointestinal Motility during Continuous Renal Replacement Therapy in Patient Undergoing Open Abdominal Surgery
Table 1
Baseline demographic and clinical characteristics of the patients.
Characteristics
Patients (n=538)
Recovery (n=336)
Nonrecovery (n=202)
Male sex ()
364 (67.66)
224 (66.67)
140 (69.31)
Mean age (y)
53.50±15.95
53.61±16.17
53.31±15.61
Operative characteristics
Gastrointestinal operation (%)
156 (29.00)
101 (30.06)
55 (27.23)
No-gastrointestinal operation (%)
382 (71.00)
235 (69.94)
147 (72.77)
Duration of operation(mean, min)
229.68±140.79
219.63±139.38
246.41±141.87
Intraoperative blood loss (median, ml)
400.00 (100.00-1025.00)
300.00 (100.00-1000.00)
500.00 (100.00-1200.00)
Length of ICU stay (median, day)
7.00 (4.00-13.00)
6.00 (4.00-11.00)
8.00 (5.00-15.00)
Length of hospital stay (median, day)
27.00 (13.00-40.00)
24.00 (11.00-38.00)
32.00 (17.00-45.00)
APACHE II score (mean)
16.80±7.78
16.83±7.39
16.77±8.48
SOFA score (mean)
8.64±3.99
8.43±3.92
8.99±4.10
Initial time of CRRT after operation (median, day)
1.00 (0.00-3.00)
1.00 (0.00-3.00)
1.00 (0.00-3.00)
CRRT modality
CVVH (%)
464 (86.25)
283 (84.23)
181 (89.60)
CVVHD/CVVHDF (%)
74 (13.75)
53 (15.77)
21 (10.40)
Prescribed dose of CRRT (mean in first 72 hours, ml/kg/h)
39.25±10.62
38.86±10.64
39.92±10.56
Delivered dose of CRRT (mean in first 72 hours, ml/kg/h)
29.65±13.30
29.62±14.04
29.70±11.98
Plasma potassium level (mmol/L)
4.00±0.47
4.14±0.48
3.78±0.34
Survival rates ()
289 (53.71)
181 (53.86)
108 (53.47)
a Recovery is defined as the time of gastrointestinal motility recovery ≤ 4.0 days after the completion of surgery, and > 4 days considered as non-recovery. CVVH stands for continuous veno-venous hemofiltration, CVVHD stands for continuous veno-venous hemodialysis, and CVVHDF stands for continuous veno-venous hemodiafiltration. Plasma potassium level was defined as the mean plasma potassium concentration before the primary endpoints. -value represents recovery cohort vs. nonrecovery cohort.
