title: [The spread and time to two-segment regression of spinal anesthesia with 0.25% hyperbaric bupivacaine].
abstract: The spread and time to two-segment regression of spinal anesthesia with 0.25% hyperbaric bupivacaine 2.0 ml (5 mg) were studied clinically in 20 patients for elective lower extremity, urological or gynecological surgery. Lumbar puncture was performed at the L 3-4 interspace with the patient in horizontal lateral decubitus positions using a 25-G Quincke needle. After injection of the local anesthetic solution at the rate of 0.2 ml.sec-1, the patient was placed immediately in supine position. Sensory block was assessed by using pinprick and motor block was assessed by using a four-point Bromage scale in every 5 min until 30 min, then every 10 min thereafter until two-segment regression of sensory block had recovered. Results were expressed as mean values +/- SD. Maximum sensory block level was Th 10.6 +/- 2.3, and time to two-segment regression was 51.5 +/- 14.6 min. Complete motor block was observed in three out of twenty patients (15%). These results indicate that spinal anesthesia with 0.25% hyperbaric bupivacaine is useful for a short case, which dose not require motor block or is performed as day-care surgery.
authors.affiliation: Department of Anesthesiology, Tama-Nagayama Hospital, Nippon Medical School, Tokyo 206-8512.
authors.forename: O
authors.initials: O
authors.lastname: Iino
authors.forename: S
authors.initials: S
authors.lastname: Omi
authors.forename: K
authors.initials: K
authors.lastname: Yokoyama
mesh_terms: D000328:Adult; D000556:Ambulatory Surgical Procedures; D000775:Anesthesia, Spinal; D000779:Anesthetics, Local / Q000493:pharmacokinetics; D002045:Bupivacaine / Q000493:pharmacokinetics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors; D013519:Urogenital Surgical Procedures
chemical_list: D000779:Anesthetics, Local; D002045:Bupivacaine