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Table 3 Characteristics of sessions with and without RCA during follow-up

From: Relationship between dialytic parameters and reviewer confirmed arrhythmias in hemodialysis patients in the monitoring in dialysis study

Characteristic Sessions without RCA Session with RCA P Value
Number of Sessions Mean ± SD or Median (IQR) Number of Sessions Mean ± SD or Median (IQR)
Duration of hemodialysis (hrs) 4154 3.8 ± 0.5 605 3.9 ± 0.6 0.80
Dry weight (kg) 4150 84.8 ± 27.9 605 90.1 ± 30.2 0.83
Percent over dry weight (%) 4138 3.9 ± 2.4 604 3.9 ± 2.4 0.04
Kilogram over dry weight 4138 3.1 ± 1.9 604 3.6 ± 2.1 0.07
Ultrafiltration rate (ml/kg/hr) 4154 9.9 ± 4.9 605 10.1 ± 4.6 0.01
Intradialytic decrease in weight (kg) 4138 2.6 ± 1.3 604 3.0 ± 1.3 0.002
Pre-dialysis potassium (mEq/L) 1408 4.9 ± 0.8 259 5.0 ± 0.8 0.74
Intradialytic potassium change (mEq/L) 1364 −1.2 ± 0.8 253 − 1.3 ± 0.8 0.13
Pre-dialysis calcium (mEq/L) 1416 8.7 ± 0.9 260 8.8 ± 0.8 0.56
Intra-dialytic calcium change (mEq/L) 1366 0.7 ± 1.1 254 0.6 ± 0.9 0.53
Pre-dialysis magnesium (mg/dL) 1416 2.4 ± 0.5 260 2.2 ± 0.4 0.88
Intradialytic magnesium change (mg/dL) 1370 −0.3 ± 0.3 255 0.3 ± 0.3 0.97
Pre-dialysis phosphorus (mg/dL) 1414 5.3 ± 1.7 260 5.1 ± 1.7 0.31
Intradialytic phosphorus change (mg/dL) 1362 −3.0 ± 1.5 255 −3.0 ± 1.5 0.28
Pre-dialysis bicarbonate (mEq/L) 1415 22.1 ± 3.9 260 22.7 ± 4.2 0.87
Intradialytic bicarbonate change (mEq/L) 1368 4.9 ± 3.3 255 4.5 ± 3.5 0.75
Pre-dialysis sodium (mEq/L) 1416 136.6 ± 4.3 260 137.9 ± 4.1 0.16
Intradialytic sodium change (mEq/L) 1366 0.6 ± 4.1 254 0.0 ± 3.4 0.28
Nadir intradialytic systolic blood pressure (mm Hg) 4148 120.0 (105.0, 138.0) 605 113.0 (99.0, 130.0) 0.31
Nadir intradialytic diastolic blood pressure (mm Hg) 4148 67.0 (56.0, 74.0) 605 62.0 (54.0, 71.0) 0.06
Dialysis Prescription Parameters Number of Sessions (n/N) % Number of Sessions (n/N) %  
Dialysate temperature      < 0.001
 36–36.9 °C 541/4064 13.3% 46/596 7.7%
 ≥37 °C 3523/4064 86.7% 550/596 92.3%
Dialysate potassium      0.26
 2.0 mEq/L 3327/4008 83.0% 422/595 70.9%
 3.0 mEq/L 681/4008 17.0% 173/595 29.1%
Dialysate calcium      < 0.001
  < 2.0 mEq/L 925/4146 22.3% 31/604 5.1%
 2.0–2.4 mEq/L 81/4146 2.0% 1/604 5.1%
 2.5 mEq/L 2211/4146 53.3% 433/604 71.7%
  > 2.5 mEq/L 929/4146 22.4% 139/604 23.0%
Dialysate sodium      0.67
  ≤ 135 mEq/L 501/3803 13.2% 70/558 12.5%
 136–139 mEq/L 408/3803 10.7% 21/558 3.8%
 140 mEq/L 2894/3803 76.1% 467/558 83.7%
 Sodium modeling 581/4140 14.0% 48/603 8.0% 0.40
Dialysate bicarbonate      0.20
  ≤ 28 mEq/L 215/4043 5.3% 29/600 4.8%
 29–34 mEq/L 962/4043 23.8% 125/600 20.8%
 35 mEq/L 1548/4043 38.3% 217/600 36.2%
  > 35 mEq/L (1318/4043) 32.6% 229/600 38.2%
  1. Data are presented as number of sessions over mean ± standard deviation or as % (n/N)>. Hrs hours, Kg kilogram, mL milliliter, mg/dL milligram per deciliter, mm Hg millimeters of mercury