Table 2.

Frequency of Side Effects Among 32 subjects Undergoing Forearm Blocks of Median and Ulnar Nerves for Dupuytren Contracture Release

Side Effect	Mixture of 5 mL Liposome Bupivacaine 1.3% Plus 2.5 mL Bupivacaine HCl 0.5% (per Median and Ulnar Nerve) (n = 16)	7.5 mL Bupivacaine HCl 0.5% per Median and Ulnar Nerve) (n = 16)
None	12 (75)	13 (81)
Unique subjects with side effects, n	4 (25)	3 (19)
Total side effects, n∗	6 (38)	5 (31)
Specific side effect∗
Bleeding wound	1 (6)	0
Dizziness	0	1 (6)
Headache	2 (12)	1 (6)
Itching of skin	1 (6)	1 (6)
Nausea	0	1 (6)
Sleepless night	2† (12)	1 (6)

Data are shown as n (%). Percentages of specific side effects are based on n = 16 in each group. Relative risk for at least one side effect = 1.33 (95% confidence interval, 0.35–5.03).

^∗Percentages for total number of side effects and specific side effects do not sum to 100% because some subjects reported more than one side effect.

^†Sleepless nights in the same subject on 2 separate dates.