When my previous EP had suggested flecainide, I was hesitant immediately. Primarily because I did not feel listened to, as though he was just applying the broad brush to me when he needed to be more careful. Then I did some research on it, and I felt I confirmed I should be hesitant, so I refused flecainide, twice.
Fast forward a year or so, when I asked my new EP if I should try flecainide just this past week, he told me absolutely not.
His notes from the mychart website:
Assessment
1. PAF. Very rapid rates but burden overall low. Based on history, appears to be primarily vagally triggered. Could try low dose sotalol but would also address vagal triggers incl GI, possible OSA. Given low burden, would be hesitant to pursue ablation unless noninvasive options truly ineffective.
2. Atrial flutter? Some regularity to RR intervals and given very rapid VR, suspect some periodic organization to flutter potentially with 1:1 conduction. Would avoid Ic AAD.
3. Stroke prophylaxis. C2V 0. No OAC indicated at present.
4. Atrial tachycardia. Brief, nonsustained.
5. Wide complex tachycardia. Suspect may be aberrated AT given monitor strips showing spontaneous narrowing without change in CL.
In bold is exactly the reason I thought I should avoid flecainide, due to my heart already seeming to occasionally go into 1:1 conduction even without it. I even had it written down to talk to my new EP about should they suggest flecainide, but I didn't even get to. There's always some hesitation around questioning the experts, but in this case I was right, flecainide is potentially dangerous considering my condition.
I haven't always been right, of course. There are extremes, where we can always question or never question. I think we should land somewhere in the middle, with measured caution, especially with some of these drugs that have potential for promoting life threatening arrhythmias.
Even sotalol, which he put me on, has that potential, but he chose to prescribe it while listening and carefully considering my condition. So far I am doing very well on it with no signs of danger (no QT prolongation).