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Table 2 Comparison of fentanyl PCA data for patients with and without a FNC

From: Relationships between post operative pain management and short term functional mobility in total knee arthroplasty patients with a femoral nerve catheter: A preliminary study

 

FNC group (n = 27)

PCA only group (n = 21)

Statistical significance

PCA duration (hours)

*37.7 ± 2.8

39.6 ± 4.4

NS

Total fentanyl used (μg) Day 0

450 (220, 73)

820 (609, 1165)

p < .001

Effect size medium, r = .48

Total fentanyl used (μg) Day 1

1120 (460, 1560)

1388 (1080, 2329)

p < .067

Effect size small, r = .23

Total fentanyl used (μg) Day 2

180 (120, 295)

237 (188, 496)

p < .03

Effect size medium, r = .31

Total fentanyl (μg) used

1860 (800, 2556)

2820 (2356, 4238)

p < .001

Effect size large, r = .52

Fentanyl used (μg)/hour

51.8 (22.8, 66.8)

89 (61, 104)

p < .001

Effect size large, r = .52

Fentanyl dose (μg)/BMI

53.6 (31.6, 93.8)

101 (71,129)

p < .002

Effect size medium, r = .45

Mean number of dose increases required on Day 0

0 (0, 1)

1 (0,1)

p < .016

Effect size medium, r = .35

% successful PCA attempts (Day 0)

75 (49, 89)

75.3 (58.3, 91.8)

NS

% successful PCA attempts (Day 1)

81.3 (62.8, 92.5)

83.6 (63.2, 89.4)

NS

  1. *Mean ± SD, or median (IQR: 25,75), reported according to normality