A patient with acute inferior wall myocardial infarction, who was thrombolysed with injection streptokinase and has ventricular ectopics (PVCs) with hypotension right from the time he presented. Now it is 3rd-day post-MI, although his pain is relieved but he still has ventricular ectopics (PVCs) some in runs too along with systolic BP 84 mm Hg.

Which drug is preferable if ventricular ectopics (PVCs) occur post myocardial infarction phase in a patient who has got hypotension as well?