Haemodynamic effects of two spinal anaesthesia techniques for unilateral leg surgery

Original article


A. Misurati, Husni Ajaj, Ivan panasevich

Department of Anaesthesiology, Tripoli Central Hospital, Tripoli, Libya

JMJ Vol. 2, No. 3 (March 2003): 49-51


Goal of study: Haemodynamic function was assessed in 40 ASAI-II statuses. Patients scheduled for elective orthopaedic surgery in order to compare the Haemodynamic changes induced by unilateral and conventional spinal anaesthesia (S.A.). Methods: after the baseline measurement of blood pressure and heart rate, patients were randomised to receive unilateral or conventional S.A. unilateral S.A. was performed by 7.5 mg of hyperbaric bupivacaine 0.5% very slowly injected via 23G whitacre spinal needle with bevel oriented towards the site of operation and patient kept in the same side over 15 min. (Group ULSA, n=20). Conventional S.A. was performed by 10 mg of heavy bupivacaine in sitting position (Group CSA, n=20). Haemodynamic variables were recorded 5, 10, 15, and 30 min after the anaesthesia administration. Results: anthropometric data, duration of surgery and effectiveness of anaesthetic techniques where similar in both groups. The patients in both groups showed haemodynamic changes: significant decrease of mean arterial blood pressure (Group ULSA vs. baseline P=0.004, group CSA vs. baseline P= 0.002, group ULSA vs. group CSA P=0.04). Heart rate increase was statistically significant only in group CSA. Conclusions: both conventional and unilateral SA provides effective anaesthesia for orthopaedic leg surgery. The conventional technique is associated with more profound haemodynamic changes.

Keywords: spinal anaesthesia, unilateral spinal anaesthesia

Link/DOI: http://www.jmj.org.ly/modules.php?name=News&file=article&sid=1263