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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