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Table 2 Perioperative fluid administration in the study groups

From: Relationship between a perioperative intravenous fluid administration strategy and acute kidney injury following off-pump coronary artery bypass surgery: an observational study

Variable

Control group

RPF group

P value

Number of patients

554

229

 

Intraoperative data

 Crystalloid (L)

1.6 [1.2–2.0]

2.2 [1.8–2.8]

<0.001

 Crystalloid per weight (ml/kg)

24.2 [18.4–31.5]

34.3 [25.3–44.5]

<0.001

 Colloid (L)

1.2 [1.0–1.5]

1.0 [0.6–1.0]

<0.001

 Colloid per weight (ml/kg)

18.5 [14.8–22.4]

14.4 [10.1–17.4]

<0.001

 Colloid-to-crystalloid volume ratio

0.8 [0.6–1.0]

0.4 [0.3–0.6]

<0.001

 Cell salvage blood (ml)

237.4 ± 328.0

138.7 ± 208.1

<0.001

Data in intensive care unit

 Colloid (L)

1.0 [0.5–1.5]

0 [0–0.2]

<0.001

 Colloid per weight (ml/kg)

16.1 [8.5–24.8]

0 [0–3.1]

<0.001

 Cumulative colloid (L)a

2.3 [1.8–2.8]

1.0 [0.8–1.5]

<0.001

 Cumulative colloid per weight (ml/kg)a

35.0 [27.1–44.7]

16.0 [11.0–20.1]

<0.001

 Packed red blood cell (unit)a

2.8 ± 2.6

2.1 ± 1.9

<0.001

 Use of fresh frozen plasmaa

265 (47.8)

77 (33.6)

<0.001

 Use of platelet concentratea

181 (32.7)

34 (14.8)

<0.001

 Use of cryoprecipitatea

31 (5.6)

6 (2.6)

0.110

 Weight gain (%)

1.9 ± 2.2

2.6 ± 2.1

<0.001

  1. RPF renal protective fluid management
  2. Data are expressed as number of patients (%), mean ± standard deviation, or median [interquartile range]
  3. aUsed during surgery and within 48 h postoperatively