A COMPARATIVE STUDY OF ATRACURIUM AND CIS- ATRACURIUM FOR INTUBATING CONDITIONS UNDER GENERAL ANAESTHESIA

Abstract

Background: Atracurium and Cisatracurium are intermediate-acting nondepolarizing neuromuscular drugs. They both are promising drugs offering a predictable recovery due to non-organ dependent elimination. However, due to the variability in metabolism and narrow therapeutic window, monitoring of neuromuscular functions has signicant importance. Cisatracurium is approximately four times as potent as atracurium. In contrast to Atracurium, Cisatracurium is devoid of chemically mediated histamine release. Routinely atracurium is used for the neuromuscular blockade in most pediatric surgeries. On the other hand, 2 ED95 doses of Cisatracurium do not create satisfactory intubating conditions such as those seen with equipotent doses of atracurium. Aim: Ÿ To compare the intubating conditions of Atracurium(0.5mg/kg) and Cisatracurium 0.15mg/kg). Ÿ To compare the hemodynamic parameters (MAP, PR, SPO2,) between atracurium and Cisatracurium Ÿ To compare the signs of histamine release potential between atracurium and Cisatracurium. Materials and Methods : A Prospective, observational study was conducted at SRI SIDDHARTHA MEDICAL COLLEGE AND RESEARCH INSTITUTE,TUMKUR. from 1st Jan 2021 to 30th June 2022 on 74 patients. In Atracurium group, there were 15 patients Results: with ASA grade of 1 and 17 patients with ASA grade of II. In Cis-Atracurium group, there were 15 patients with ASA grade of 1 and 22 patients with ASA grade of II. Chi square test was performed between the 2 groups and p value was observed to be > 0.05 indicating no statistically signicant difference between the groups. Average onset time for Atracurium group was 177 ± 22.4 seconds and same was 184 ± 17.3 seconds in Cis Atracurium group. In Atracurium group, intubation was successful at 1st attempt in 33 subjects, 2nd attempt in 2 subjects, 3rd attempt in 2 subjects. In Cis Atracurium group, intubation was successful at 1st attempt in 35 subjects and 2nd attempt in 2 subjects. In Atracurium group, duration of action of the muscle relaxant was 46 ± 4.9 minutes, Duration of 25% recovery was 33 ± 4.2 minutes, Time of recovery from reversal was 1.7 ± 0.8 minutes. In Cis Atracurium group, duration of action of the muscle relaxant was 68 ± 7.1 minutes, Duration of 25% recovery was 48 ±5.6 minutes, Time of recovery from reversal was 2.2 ± 1.1 minutes. Cis atracurium had longer recovery time and duration of action. Atracurium c Conclusion: aused signicant hemodynamic impact than Cis atracurium. Adverse effects were comparable in both.