case_images: PMC9889206_01
case_images: Initial ECG on presentation
case_images: cureus-0015-00000033229-i01.jpg
case_images: PMC9889206_01_cureus-0015-00000033229-i01.jpg
case_images: FIG1
case_images: ECG was obtained and showed atrial tachycardia (Figure 1).
case_images: ECG obtained during the appointment with cardiologist
case_images: cureus-0015-00000033229-i02.jpg
case_images: PMC9889206_01_cureus-0015-00000033229-i02.jpg
case_images: FIG2
case_images: ECG again showed a paroxysmal atrial tachycardia with a rate of 144 BPM and frequent conversion to sinus rhythm (Figure 2). Echocardiogram was obtained and revealed left ventricular ejection fraction of 40%.
case_images: ECG after treatment with flecanaide
case_images: cureus-0015-00000033229-i03.jpg
case_images: PMC9889206_01_cureus-0015-00000033229-i03.jpg
case_images: FIG3
case_images: The patient converted to sinus rhythm on hospital day four (Figure 3) and maintained normal sinus rhythm until her discharge on the same medication regimen with ambulatory telemetry that sinus rhythm with atrial tachycardia.