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