Abstract:
STUDY OBJECTIVE:To evaluate whether alkalizing local anesthetic with sodium bicarbonate reduces pain related to infiltration of local anesthetic during dorsal penile nerve block for circumcision. DESIGN:Prospective, randomized, double-blind, controlled study. SETTING:E. Wolfson Medical Center, Holon, Israel. PATIENTS:144 patients aged 15 to 54 years (mean +/- SD = 22.7 +/- 8.8 years), randomized before the block into four groups of 36 patients each. INTERVENTIONS:Group A (control) received a standard solution of 1 mg/kg lidocaine 2% mixed with 0.5 mg/kg bupivacaine 0.5% without epinephrine (pH = 6.3). Patients in Group B, Group C, and Group D received this mixture added with 8.4% sodium bicarbonate for a mean final pH of 6.90, 7.16, and 7.43, respectively. Penile block was performed using a 23-gauge needle by an anesthetist who was blinded to the pH of the solution. MEASUREMENTS AND MAIN RESULTS:Patients were questioned regarding pain suffered during injection of the anesthetic solutions by another physicians who also was blinded to the drug used. Pain was rated by a previously reported subjective pain scale. Mean pain scales were 2.0 +/- 0.17, 2.3 +/- 0.15, 2.2 +/- 0.16, and 1.94 +/- 0.15 for Groups A to D, respectively. The differences between these results were not statistically significant. CONCLUSION:Alkalinizing the acidic local anesthetic solution by sodium bicarbonate does not decrease pain related to infiltration during penile nerve block for circumcision.
journal_name
J Clin Anesthjournal_title
Journal of clinical anesthesiaauthors
Serour F,Levine A,Mandelberg A,Ben Yehuda Y,Boaz M,Mori Jdoi
10.1016/s0952-8180(99)00097-5subject
Has Abstractpub_date
1999-11-01 00:00:00pages
563-6issue
7eissn
0952-8180issn
1873-4529pii
S0952-8180(99)00097-5journal_volume
11pub_type
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更新日期:1993-03-01 00:00:00
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