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Table 2 Operative profile of mastectomies

From: Protective effect of remifentanil on blood loss in endoscopic subcutaneous mastectomy: a retrospective study

 

Partial mastectomy

Quadrantectomy

Remifentanil

Non-remifentanil

P value

Remifentanil

Non-remifentanil

P value

n = 98

n = 133

 

n = 56

n = 156

 

Blood loss, ml

60 [30, 94]

90 [50, 165]

< 0.001

90 [30,163]

140 [74, 220]

0.001

Mean SBP, mmHg

98 ± 11

115 ± 14

< 0.001

100 ± 11

115 ± 14

 

Mean MBP, mmHg

74 ± 9

86 ± 11

< 0.001

74 ± 9

86 ± 11

< 0.001

Mean HR, bpm

71 ± 12

79 ± 12

< 0.001

71 ± 11

80 ± 13

< 0.001

Anesthesia time, min

188 ± 38

206 ± 43

< 0.001

220 ± 47

238 ± 42

0.006

Operative time, min

138 [115, 163]

147 [126, 182]

< 0.001

167 [139, 190]

179 [150, 211]

0.056

Infusion volume, ml

1300 [962, 1500]

1500 [1200, 1800]

< 0.001

1500 [1088, 1863]

177 [1300, 2000]

0.031

Re-operation for bleeding, n (%)

0/98 (0)

1/133 (0.8)

1

0/56 (0)

1/ 156 (0.6)

1

Intraoperative drug using, n (%)

 Ephedrine

40/98 (41)

22/133 (17)

< 0.001

17/56 (30)

21/156 (13.5)

0.008

 Phenylephrine

1/98 (1.0)

0/133 (0)

0.42

0/56 (0)

1/156 (0.6)

1

 Atropine

41/98 (42)

11/133 (8.3)

< 0.001

21/56 (38)

34/156 (22)

0.032

 Fentanyl

1/98 (1.0)

2/133 (1.5)

1

2/56 (3.6)

2/156 (1.3)

0.29

 Pentazocine

0/98 (0)

4/133 (3.0)

0.14

0/56 (0)

2/156 (1.3)

1

 Flurbiprofen axetil

59/98 (60)

52/133 (39)

0.002

38/56 (68)

42/156 (27)

< 0.001

 Diclofenac suppository

5/98 (5.1)

7/133 (5.3)

1

4/56 (7.1)

30/156 (19)

0.035

Remifentanil infusion speed, mcg/kg/min

0.16 [0.11, 0.25]

  

0.21 [0.13, 0.29]

  

Inhaled anesthetics

 Nitrous oxide–oxygen–sevoflurane*

3/98 (3.1)

107/133 (80)

< 0.001

1/56 (1.8)

138/156 (89)

< 0.001

  1. SBP intraoperative systolic blood pressure; MBP intraoperative mean blood pressure; HR intraoperative heart rate
  2. Continuous variables with normal distribution and with skewed distribution were expressed as mean ± SD and median [25%, 75%]. Categorical variable (ASA-PS) was expressed as number (%). Continuous variables were analyzed using Student’s t test or the Mann–Whitney U test as long as appropriate. Categorical variables were analyzed using Fisher exact test
  3. *One inhaled anesthetic other than nitrous oxide–oxygen–sevoflurane was oxygen–sevoflurane