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Table 2 Laboratory blood test of the ESRD patients with and without RLS

From: Restless legs syndrome in end stage renal disease patients undergoing hemodialysis

 

Patients with ESRD, N (%)

 

Variables

RLS – (n = 109)

RLS + (n = 28)

p value

Blood Urea Nitrogen

mmol/L

27.48 (23.31-31.35)

29.33 (27.3-34.2)

0.014

Pre-dialysis Creatinine

mg/dl

1037 (874.5-1204.5)

1053 (900-1193.5)

0.852

Pro-dialysis Creatinine

mg/dl

350 (276-418)

327 (247-462)

0.378

D-value of Creatinine

mg/dl

685 (559.5-791.5)

699 (641.25-805.75)

0.370

Calcium

mg/dL

2.31 ± 0.26

2.32 ± 0.26

0.744

Phosphorus

mg/dL

1.90 ± 0.47

2.11 ± 0.70

0.155

Ca*P product

mg2/dL2

4.41 ± 1.30

4.92 ± 1.75

0.157

Albumin

g/dL

39.24 ± 4.24

39.70 ± 6.29

0.650

Alkaline Phosphatase

U/L

73 (54-93.5)

75 (61-98.75)

0.523

Hemoglobin

g/L

100.13 ± 15.54

105.43 ± 22.1

0.240

Serum Iron

μmol/L

13.2 (9.45-16.3)

15.41 (12.5-18.0)

0.034

Ferritin

μg/L

194 (68.85-335.3)

122.5 (53.8-232.99)

0.371

Transferrin

g/L

2.11 (1.83-2.36)

2.14 (1.78-2.45)

0.953

TIBC

μmol/L

47.02 ± 8.49

48.51 ± 9.67

0.424

Parathyroid Hormone

pg/mL

203.9 (65.91-472.1)

258.3 (62.95-574.1)

0.522

Kt/V

 

1.53 ± 0.61

1.49 ± 0.34

0.783

URR

%

70.19 ± 8.15

70.27 ± 8.05

0.967

  1. Abbreviations: ESRD end stage renal disease, RLS restless legs syndrome, RLS- without RLS, RLS+ with RLS, Ca*P product calcium phosphorus product, TIBC total iron-binding capacity, Kt/V is a number used to quantify hemodialysis (K, dialyzer clearance of urea; t, dialysis time; V, volume of distribution of urea, approximately equal to patient’s total body water); URR, urea reduction ratio