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Table 2 Spinal anesthetic dosing

From: Postoperative outcomes of mepivacaine vs. bupivacaine in patients undergoing total joint arthroplasty with spinal anesthesia

Dose - mg

Total Hip Arthroplasty

Total Knee Arthroplasty

Hyperbaric Bupivacaine (n=401)

Isobaric Bupivacaine (n=34)

Mepivacaine (n=232)

Hyperbaric Bupivacaine (n=502)

Isobaric Bupivacaine (n=28)

Mepivacaine (n=131)

Mean

10.9

12.7

63.4

10.7

11.0

65.2

SD

1.7

2.1

75.3

1.6

2.4

54.5

Median

10.5

12.5

60.0

10.5

11.1

60.0

25th Percentile

10.5

11.5

56.0

9.8

10.0

60.0

75th Percentile

12.0

15.0

60.0

11.3

12.0

60.0