Table 3: Milligram morphine equivalents compared between liposomal bupivacaine and standard bupivacaine groups.

 

LB

SB

 
 

N

Mean

SD

Median

Range

N

Mean

Std Dev

Median

Range

p-value (Wilcoxon rank sum test)

MME postop

40

2.63

8.12

0

(0-37.5)

40

2.25

7.31

0

(0-35)

0.7538

MME at 24 hour phone call

40

6.00

8.32

0

(0-30)

40

13.89

12.41

11.00

(0-45)

0.0017*

MME at 48 hour phone call

40

11.45

14.97

7.75

(0-75)

40

20.23

16.74

15.00

(0-67.5)

0.0061*

MME at 72 hour phone call

40

9.13

11.59

2.00

(0-45)

40

17.21

20.40

15.00

(0-90)

0.0717

Cumulative MME up to 24 hours

40

8.63

12.77

7.50

(0-65)

40

16.14

14.71

15.00

(0-50)

0.0072*

Cumulative MME up to 48 hours

40

20.07

23.59

9.00

(0-105)

40

36.36

26.93

30.00

(0-98.5)

0.0033*

Cumulative MME up to 72 hours

40

29.20

31.11

22.50

(0-150)

40

53.58

43.40

45.00

(0-187.50)

0.0056*

Notes: *indicates statistically significant (p < 0.05)

Abbreviations: LB: Liposomal Bupivacaine; SB: Standard Bupivacaine; SD: Standard Deviation; MME: Milligram Morphine Equivalents