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"Dalam induksi anestesia dengan etomidat sering timbal mioklonus. Penelitian ini membandingkan premedikasi midazolam dan fentanil dengan premedikasi midazolam saja dalam mencegah mioklonus. Penefitian dilakukan dengan acak tersamar ganda terhadap 140 pasien. Pasien dibagi menjadi 2 kelompok, masing-masing 70 orang yaitu yang mendapat premedikasi midazolam 0,02 mg/kg BB dan fentanil 14g/kg BB intravena (IV) atau midazolam 0,04 mg/kg BB IV. Setelah itu digunakan etomidat 0.3 mg/kg BB IV untuk induksi anestesia_ Kejadian dan derajat mioklonus diamati selama 60 detik. Insidens miokonus lebih kecil pada kelompok fentanil dan midazolam (5/70) dibandingkan kelompok midazolam (29/70){P<0,05}. Tidak ditemukan perbedaan bermakna dalam derajat mioklonus (p>0,05) pada kedua kelompok. Premedikasi dengan midazolam 0,02 mg/kg BB dart fentanil 14g/kg BB IV efektif menurunkan mioklonus akibat induksi dengan etomidat.

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During induction of anaesthesia with etomidate, myoclonic muscle movements are frequent. in this study, pretreatment with midazolam and fentanyl was compared to pretreatment with midazolam for the prevention of myoclonic muscle movements. Included in this study were 140 patients, pretreated in randomized double-blinded fashion with midazolam 0.02 mg/kg and fentanyl 1 µg/kg IV (n=70 patients) or midazolam 0.04 mg/kg IV (n=70 patients). Induction agent used was etomidate 0.3 mg/kg IV. The incidence and intensity of myoclonic movements were observed in 60 seconds. The incidence of myoclonic movements was significantly lower in patients pretreated with midazolam and fentanyl (5/70) than patients pretreated with midazolam only (29/70){p<0.051. The intensity of myoclonic movements was not significantly different (p>0.05) in two groups. Pretreatment with midazolam 0.02 mg/kg and fentanyl 1 gg/kg IV is more effective than that with midazolam 0.04 mg/kg IV in reducing etomidateinduced myoclonic muscle movements."