• A Agarwal, G Yadav, D Gupta, M Tandon, S Dhiraaj, and P K Singh.
• Department of Anaesthesia, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.
• Anaesth Intensive Care. 2007 Oct 1;35(5):726-9.

AbstractWe evaluated the efficacy of topical Myolaxin (capsaican ointment, Geno, Mumbai) ointment over EMLA (eutectic mixture of lignocaine, prilocaine; Neon, Goa) cream for attenuating venous cannulation pain in this prospective, randomised, double blind study. Sixty adult patients undergoing elective laparoscopic cholecystectomy were randomly assigned into two equal groups. Group I (EMLA) received EMLA cream, whereas Group II (Myolaxin) received Myolaxin ointment. For both groups the cream was applied at the venous cannulation site (dorsum of the non-dominant hand) one hour prior to venous cannulation and was covered with an occlusive dressing. Following venous cannulation patients were asked if they felt pain during venous cannulation. If the answer was yes, they were asked to rate the severity of venous cannulation pain using a VisualAnalogue Scale (VAS) of 0-10. The incidence of venous cannulation pain was similar between groups: in the EMLA group 65% (18/28) compared to 67% (20/30) in the Myolaxin group (P=0.19). The severity of pain (median VAS with inter quartile range) was also similar between the groups: in the EMLA group 1.5 (3) compared to 1.5 (2) in the Myolaxin group (P=0.46). As the topical application of Myolaxin ointment is cheaper than EMLA and has similar efficacy, it may be a suitable alternative for reducing the incidence and severity of venous cannulation pain.

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