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  • Title: Outcome of four pretreatment regimes on hemodynamics during electroconvulsive therapy: A double-blind randomized controlled crossover trial.
    Author: Parikh DA, Garg SN, Dalvi NP, Surana PP, Sannakki D, Tendolkar BA.
    Journal: Ann Card Anaesth; 2017; 20(1):93-99. PubMed ID: 28074804.
    Abstract:
    CONTEXT: Electroconvulsive therapy (ECT) is associated with tachycardia and hypertension. AIMS: The aim of this study was to compare two doses of dexmedetomidine, esmolol, and lignocaine with respect to hemodynamics, seizure duration, emergence agitation (EA), and recovery profile. METHODOLOGY: Thirty patients undergoing ECT were assigned to each of the following pretreatment regimes over the course of five ECT sessions in a randomized crossover design: Group D1 (dexmedetomidine 1 μg/kg), Group D0.5 (dexmedetomidine0.5 μg/kg), Group E (esmolol 1 mg/kg), Group L (lignocaine 1 mg/kg), and Group C (saline as placebo) before induction. Heart rate (HR), mean arterial pressure (MAP), seizure duration, EA, and time to discharge were evaluated. RESULTS: Groups D1, D0.5, and esmolol had significantly reduced response of HR, MAP compared to lignocaine and control groups at 1, 3, 5 min after ECT (P < 0.05). Motor seizure duration was comparable in all groups except Group L (P = 0.000). Peak HR was significantly decreased in all groups compared to control. Total propofol requirement was reduced in D1 (P = 0.000) and D0.5 (P = 0.001) when compared to control. Time to spontaneous breathing was comparable in all the groups (P > 0.05). Time to eye opening and time to discharge were comparable in all groups (P > 0.05) except Group D1 (P = 0.001). EA score was least in Group D1 (P = 0.000). CONCLUSION: Dexmedetomidine 1 μg/kg, 0.5 μg/kg, and esmolol produced significant amelioration of cardiovascular response to ECT without affecting seizure duration, results being best with dexmedetomidine 1 μg/kg. However, the latter has the shortcoming of delayed recovery.
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