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Table 3 Effect of remote ischemic preconditioning on kidney function markers over time

From: Randomized controlled trial of remote ischemic preconditioning in children having cardiac surgery

 

N

Control

RPC

Difference

p value

Mean (95% CI)

Mean (95% CI)

(95% CI)

Creatinine (mg/dL)

     

 Baseline

84

0.39 (0.33, 0.45)

0.38 (0.33, 0.44)

− 0.006 (− 0.01, 0.080)

0.898

 6 h

84

0.41 (0.35, 0.47)

0.41 (0.35, 0.47)

0.002 (− 0.083, 0.087)

0.967

 12 h

83

0.44 (0.38, 0.50)

0.46 (0.40, 0.51)

0.015 (− 0.071, 0.100)

0.735

 24 h

78

0.50 (0.44, 0.56)

0.45 (0.39, 0.50)

− 0.056 (− 0.142, 0.031)

0.188

 48 h

71

0.40 (0.34, 0.47)

0.38 (0.32, 0.44)

− 0.021 (− 0.109, 0.067)

0.638

 72 h

65

0.38 (0.32, 0.45)

0.33 (0.27, 0.39)

− 0.052 (− 0.140, 0.036)

0.247

Difference in slopes (95% CI)#

 

− 0.0007 (− 0.0015, 0.0002)

  

0.109

Cystatin C (mg/L)

     

 Baseline

84

1.23 (1.10, 1.35)

1.25 (1.13, 1.37)

0.02 (− 0.15, 0.19)

0.822

 6 h

84

0.95 (0.83, 1.08)

1.01 (0.89, 1.12)

0.05 (− 0.12, 0.22)

0.547

 12 h

84

1.01 (0.88, 1.13)

1.06 (0.95, 1.18)

0.06 (− 0.12, 0.23)

0.530

 24 h

78

1.14 (1.01, 1.27)

1.16 (1.04, 1.27)

0.02 (− 0.16, 0.19)

0.862

 48 h

70

1.10 (0.97, 1.23)

1.09 (0.97, 1.21)

− 0.005 (− 0.18, 0.17)

0.959

 72 h

65

1.16 (1.03, 1.29)

1.06 (0.94, 1.19)

− 0.10 (− 0.27, 0.08)

0.300

Difference in slopes (95% CI)#

 

− 0.002 (− 0.003, − 0.0001)

  

0.042

eGFR-Cr* (mL/min/1.73 m2)

     

 Baseline

84

108 (89, 126)

102 (85, 120)

− 5 (− 31, 20)

0.686

 6 h

84

89 (70, 107)

89 (72, 106)

0.2 (− 25, 26)

0.986

 12 h

83

91 (73, 110)

76 (58, 93)

− 15 (− 41, 10)

0.234

 24 h

78

94 (75, 113)

87 (70, 105)

− 7 (− 33, 19)

0.612

 48 h

71

117 (98, 137)

104 (86, 122)

− 14 (− 41, 13)

0.300

 72 h

65

99 (79, 119)

112 (93, 131)

13 (− 14, 41)

0.340

Difference in slopes (95% CI)#

 

0.16 (− 0.16, 0.48)

  

0.323

eGFR-CysC** (mL/min/1.73 m2)

     

 Baseline

84

65 (57, 73)

66 (58, 74)

0.9 (− 10, 12)

0.873

 6 h

84

80 (72, 88)

80 (72, 88)

0.2 (− 11, 11)

0.977

 12 h

84

79 (70, 87)

77 (69, 84)

− 2 (− 13, 9)

0.745

 24 h

78

70 (62, 78)

73 (65, 80)

3 (− 8, 14)

0.628

 48 h

70

72 (63, 80)

73 (65, 80)

3 (− 10, 13)

0.840

 72 h

65

68 (60, 77)

74 (66, 82)

5 (− 6, 17)

0.360

Difference in slopes (95% CI)#

 

0.07 (− 0.03, 0.16)

  

0.157

  1. Bold value indicates the important value under each subgroupp of the raw data
  2. *eGFR-Cr = 0.413 × (height/serum creatinine)
  3. **eGFR-CysC = 70.69 × (cystatin-C)−0.931
  4. #The unit for the slope of cystatin C and creatinine is mg/L/h