Cardiovascular effects of two different regional anaesthetic techniques for unilateral leg surgery

G. Fanelli, A. Casati, G. Aldegheri, P. Beccaria, M. Berti, A. Leoni, Giorgio Torri

Research output: Contribution to journalArticlepeer-review


Background: Cardiovascular function was assessed in 20 ASA I-II patients, scheduled for elective orthopaedic surgery with tourniquet in order to compare the haemodynamic changes induced by unilateral spinal anaesthesia and combined sciatico-femoral nerve block. Methods: After baseline measurement of cardiovascular parameters, patients were randomized to receive unilateral spinal anaesthesia or combined sciatico-femoral nerve block. Spinal anaesthesia was obtained by 8 mg of hyperbaric bupivacaine 0.5% slowly injected (speed=0.02 ml s-1) through a 25-G Whitacre spinal needle with the bevel orientated towards the dependent side and patients lying on their operated side for 15 min (group S, n=10). Combined sciatico-femoral nerve block was obtained by 7 mg kg-1 of mepivacaine 2% (group NB, n=10). Haemodynamic variables were recorded 5, 10, 15, and 30 min after anaesthetic injection before surgery was started. Results: Anthropometric data, duration of surgery and acceptability of anaesthetic techniques were similar in the 2 groups. In 8 patients of group S, spinal block was restricted to the operated side (pinprick test and Bromage scale), while the other 2 patients developed bilateral spinal block after being turned supine. NB patients showed no haemodynamic changes during the study, whereas patients in group S showed a small but significant decrease of mean arterial blood pressure (P

Original languageEnglish
Pages (from-to)80-84
Number of pages5
JournalActa Anaesthesiologica Scandinavica
Issue number1
Publication statusPublished - 1998


  • Anesthesia, peripheral nerve block, spinal
  • Cardiovascular system, effects
  • Local anesthetic, mepivacaine, bupivacaine
  • Measurement techniques, transthoracic electrical impedance

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine


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