-Abstract-
In order to control the pain after hemorrhoidectomy and anal fistulectomy, 6 mg of
0.5% hyperbaric tetracaine without(control, group I ) or wilt 0.3 ㎎(group Ⅱ ) or 0.5 ㎎
(group Ⅲ ) of 0.1% morphine was injected with a 22 gauge spinal needle into the
subarachnoid space through L 3-4 interspace of patients in lateral position. About 30
minutes in Fowler' sposition after injection, operation was performed in lithotomy
position.
All the patients who ha4 morphine showed remarkable relief of postoperative pain for
an average of 27 hours. However, the dosage(0.3 or 0.5 ㎎) of morphine administered did
not affect the duration of pain relief. Blood pressure, pulse rate and pupil size were
unchanged in all patients. Dysuria after block developed for on average of 5,6, 13.2 and
14.6 hours in group Ⅰ, Ⅱ and Ⅲ respectively. Most of these cases required urethral
catheterization. Minor complications such as nausea, vomiting, itching, fever, burning
sensation and paresthesia were observed 16.7, 20 and 20% of cases in group Ⅰ, Ⅱ and
Ⅲ respectively; however, no treatment was required.
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