Post-operative atrial fibrillation is a common problem post cardiac surgery with rates exceeding 30%. Atrial fibrillation has multiple adverse effects on cardiac hemodynamics and can lead to hypotension, diminished end organ perfusion and lengthen the stay in ICU. Amiodarone is the medication of choice used for pharmacological cardioversion and can be used with vasoactive medications. Intravenous amiodarone is associated with hypotension and end organ perfusion requiring escalation in vasoactive support. Vernakalant is novel anti-arrhythmic agent approved in Canada for cardioversion of atrial fibrillation that primarily works on atrial channels and has no effect on contractility or vasodilation. Clinical trials have proved good efficacy of Vernakalant in conversion of paroxysmal atrial fibrillation however there is no comparison of Amiodarone to Vernakalant in post-operative cardiac surgery. We plan to perform a clinical trial comparing Vernakalant to amiodarone in post-cardiac surgery patients with a primary outcome of cardioversion at 90 minutes. Secondary outcomes will follow duration of vasoactive medications, days in ICU and economics.
Age range
18 Years
Sex
ALL
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Rate of conversion of sustained post-operative atrial fibrillation at 90 minutes.
Timeframe: 90 minutes