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What is Drug of choice of paroxysmal supraventricular tachycardia is ? and explain in detail?
Ans. is 'a' i.e., Adenosine Treatment of paroxysmal supraventricular tachycardia Valsalva maneuver, carotid sinus massage - T vagal discharge - AV node conduction & T refractoriness. Adenosine CCBs b-blockers Adenosine is prefered because of very sho duration of action and lack of negative ionotropic effect. Prevention of PSVT - Drugs that slow conduction in the antegrade slow pathway, e.g. - Digitalis, P-blockers, CCBs.