The lidocaine patch is currently only permitted for post herpetic neuralgia but the investigators want to study its effectiveness in post operative pain after inguinal herniorrhaphy
After open unilateral inguinal herniorrhaphy, patients are randomly divided into group L and group P groups. Group L attaches two lidocaine patches for 12 hours, above and below the incision site. Group P attaches two placebo patches for 12 hours, above and below the incision site. Pain scores are recorded for 30 minutes, 2 hours, 24 hours, and 1 week after surgery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
32
Attach two lidocaine patches for 12 hours, one above and below the incision site.
Seoul National Universuty, Bundang Hospital
Seongnam-si, Gyonggido, South Korea
The pain score
VAS(visual analog scale) measurement for 24 hours after surgery(0-10) 0: no pain 10: severe pain
Time frame: 24 hours after the anesthesia finished.
The pain score
VAS(visual analog scale) measurement for 24 hours after surgery(0-10) 0: no pain 10: severe pain
Time frame: 30 min after the anesthesia finished.
The pain score
VAS(visual analog scale) measurement for 24 hours after surgery(0-10) 0: no pain 10: severe pain
Time frame: 2 hours after the anesthesia finished.
Total amount of cumulative analgesics
total amount of analgesics are measured for 24 hours after surgery.
Time frame: 24 hours after the anesthesia finished.
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