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Table 1 Characteristics of randomized controlled trials of Chinese herbal bath therapy for HP

From: Chinese herbal bath therapy for the treatment of uremic pruritus: meta-analysis of randomized controlled trials

Source

Study setting (hospital/clinic)

Diagnostic criteria

Disease stage

Sample Size and Included Subject Age (Year)

Intervention (Regimen)

Control (Regimen)

Concomitant Treatments

Uremic Pruritus Measurement Tools

Du, 2009 [19]

hospital

Chinese diagnostic standard

CRF uraemia period

41 HD patients with UP

CHBT: 45.7

Control: 44.9

CHBT+HD

CL + HD

Erythropoietin (skin-pop, 3000 IU each time, two or three times a w), treat acidosis, supplement iron, folic acid

Improvement of pruritus

Du et al., 2004 [20]

hospital

Chinese diagnostic standard

CRF uraemia period

29 HD patients with UP

CHBT: 45

Control: 46

CHBT+HD

CL + HD

Erythropoietin (skin-pop, 2000 IU each time, two or three times a w), calcium carbonate (1.5 g per pill, 3 times a d), treat acidosis, supplement iron, folic acid

Improvement of pruritus

Gao and Ye, 2012 [21]

hospital

NKF

CKD Stage 5

41 HD patients with UP

Mean: 53.9 ± 14.1

CHBT+HD

HP + HD

Medications (dose and frequency: n.r.):

erythropoietin, calcium carbonate, calcitriol; healthy diet

DRKS

Guo et al., 2009 [22]

hospital

Chinese diagnostic standard

CRF uraemia period

45 HD patients with UP

CHBT: 46.3 ± 12.8

Control: 44.6 ± 13.2

CHBT+HD

CL + HD

Control blood pressure, treat anaemia, maintain water electrolyte and acid-base balance, regulate calcium and phosphorus metabolism, healthy diet

Improvement of pruritus

Jia et al., 2012 [23]

hospital

NKF

CKD Stage 5

33 HD patients with UP

CHBT: 52.9

Control: 53.2

CHBT+HD

HP + HD

Treat anaemia, maintain water electrolyte and acid-base balance, healthy diet

DRKS;

Improvement of pruritus

Jia, Li and Fei, 2012 [24]

hospital

NKF

CKD Stage 5

30 HD patients with UP

Mean: n.r.

CHBT+HD

CL + HD

treat anaemia, maintain water electrolyte and acid-base balance, healthy diet

Improvement of pruritus

Lan, 2017 [25]

hospital

NKF

CKD Stage 5

60 HD patients with UP

CHBT: 47.32 ± 11.23

Control: 48.12 ± 10.73

CHBT+HD

CL + HD

Medications (dose and frequency: n.r.):

Erythropoietin (skin-pop), calcium carbonate

Improvement of pruritus

Lin, 2014 [26]

hospital

NKF

CKD Stage 5

80 HD patients with UP

CHBT: 51.4 ± 5.2

Control: 52.6 ± 3.1

CHBT+HP + HD

HP + HD

Maintain water electrolyte and acid-base balance, treat anaemia

Improvement of pruritus

Shen, 2014 [27]

hospital

NKF

CKD Stage 5

53 HD patients with UP

CHBT+HD

Cetirizine+CL + HD

n.r.

0–10 VAS

Wang et al., 2013 [28]

hospital

NKF

CKD Stage 5

54 HD patients with UP

CHBT: 48.9

Control: 46.8

CHBT+HD

HD

maintain water electrolyte and acid-base balance, control blood pressure, diuresis, calcium supplement, anti-infection

100-mm VAS;

Improvement of pruritus

Wen, 2007 [29]

hospital

Chinese diagnostic standard

CRF uraemia period

42 HD patients with UP

CHBT: 48.2

Control: 48.6

CHBT+HD

CL + HD

Erythropoietin (skin-pop, 3000 IU each time, two or three times a w), treat acidosis, calcium supplement, supplement iron

Improvement of pruritus

Yao, 2015 [30]

hospital

NKF

CKD Stage 5

42 HD patients with UP

Mean: 47.5 ± 20.2

CHBT+HD

CL + HD

Treat anaemia, maintain water electrolyte and acid-base balance, calcium supplement

Improvement of pruritus

Yu et al., 2017 [31]

hospital

NKF

CKD Stage 5

30 HD patients with UP

Mean: 57.43 ± 10.23

CHBT+HD

CHWB+HD

Control blood pressure and blood sugar, treat anaemia, regulate calcium and phosphorus metabolism

DRKS

Zhang et al., 2014 [32]

hospital

NKF

CKD Stage 5

100 HD patients with UP

CHBT: 46

Control: 45

CHBT+HD

CL + HD

Treat anaemia, maintain water electrolyte and acid-base balance, calcium supplement

Improvement of pruritus

Zhang et al., 2012 [33]

hospital

Chinese diagnostic standard

CRF uraemia period

156 HD patients with UP

CHBT: 46

Control: 44

CHBT+HD

HD

Erythropoietin (skin-pop, 4000 IU each time, two times a w), calcium carbonate (1.0 g per pill, 3 times a d), supplement iron, folic acid

DRKS;

Improvement of pruritus

Zhao, 2011 [34]

hospital

NKF

CKD Stage 5

24 HD patients with UP

CHBT: 42.77 ± 13.19

Control: 49.27 ± 9.72

CHBT+HD

Sham CHBT+HD

Treat anaemia and control blood pressure

Medications: including haemopoietin, iron, folic acid, calcium channel blockers, ACE inhibitor, angiotensin receptor inhibitor.

10-cm VAS

Zheng, 2016 [35]

hospital

NKF

CKD Stage 5

42 HD patients with UP

CHBT: 47.5 ± 20.2

Control: 47.7 ± 20.5

CHBT+HD

HD

Treat anaemia, take calcium and vitamin D supplements, control blood pressure, blood sugar, healthy diet

DRKS

  1. VAS visual analogue scale, ACE inhibitor angiotensin converting enzyme inhibitor, w weeks, d days, n.r. not reported, CHWB Clean hot water bath, CL calamine lotion (an external Chinese medicine for relieving itching. The main ingredients are calamine, zinc oxide and glycerine)
  2. Diagnostic criteria:
  3. (i) NKF: National Kidney Foundation. CKD Stage 5 is described as follows: established kidney failure (GFR < 15 ml/min/1.73 m2), permanent renal replacement therapy, or end-stage kidney disease
  4. (ii) Chinese diagnostic standard: This is described in the second edition of Nephrology, edited by Haiyan Wang. CRF (uraemia period) is described as follows: Scr > 707 μmol/L, BUN> 28.6 mmol/L, accompanied by metabolic acidosis, renal anaemia and other corresponding clinical symptoms
  5. Outcome definition and measurement:
  6. (i) The improvement of pruritus assessment comprises four levels: “cured” (pruritus disappeared or almost disappeared); “significantly improved” (pruritus improved significantly); “improved” (pruritus is relieved); and “not cured” (pruritus did not decrease or even worsened). Total effectiveness rate (%) is determined as the quotient of the number of cured, significantly improved and improved patients divided by the total number of the patients
  7. (ii) DRKS, Dirk R Kuypers score. Main points: (a) relieving the effect of scratching on pruritus: 1-5points (b) pruritic range: 1-3points (c) frequency of itching: 1–5 points (d) disturbed sleep at night due to itching: 2–14 points. The first three items (a, b, c) are evaluated twice a day, once in the morning and once in the afternoon. Twenty-four-hour maximum score: 40 points. Higher scores indicate worse outcomes