Combined therapy with amiodarone and carvedilol provided greatest reduction of sudden arrhythmic and total mortality .
[Correction of baroreflex sensitivity impairment and efficacy of prevention of sudden arrhythmic death in patients with postinfarction left ventricular dysfunction]. Baroreflex sensitivity was assessed in 287 patients with history of myocardial infarction and left ventricular ejection fraction < or =40% by phenylephrine test and was found to be depressed (4.44+/-0.38 ms/mm Hg). Repeat study in 3, 6 and 12 months revealed substantial improvement of baroreflex sensitivity in patients treated with perindopril especially when it was combined with amiodarone, metoprolol, bisoprolol and carvedilol but not with atenolol. Combined therapy with amiodarone and carvedilol provided greatest reduction of sudden arrhythmic and total mortality . Superiority of combination of amiodarone with lipophilic beta-adrenoblocker over monotherapy had been anticipate but was not confirmed in any of large prospective studies.
### Instruction:
            Given the context about compound efficacy for the given treatment mentioned within the input, mentioned the compounds 
            that can co-occur for the mentioned treatment

            ### Input:
            [Correction of baroreflex sensitivity impairment and efficacy of prevention of sudden arrhythmic death in patients with postinfarction left ventricular dysfunction]. Baroreflex sensitivity was assessed in 287 patients with history of myocardial infarction and left ventricular ejection fraction < or =40% by phenylephrine test and was found to be depressed (4.44+/-0.38 ms/mm Hg). Repeat study in 3, 6 and 12 months revealed substantial improvement of baroreflex sensitivity in patients treated with perindopril especially when it was combined with amiodarone, metoprolol, bisoprolol and carvedilol but not with atenolol. Combined therapy with amiodarone and carvedilol provided greatest reduction of sudden arrhythmic and total mortality . Superiority of combination of amiodarone with lipophilic beta-adrenoblocker over monotherapy had been anticipate but was not confirmed in any of large prospective studies.

            ### Response:
            amiodarone, carvedilol
            