case_images: PMC3038953_01
case_images: Electrocardiogram showing narrow-complex tachycardia with atrial fibrillation and occasional atrial flutter with irregularly irregular ventricular response. Heart rate, 122 beats per minute; QRS, 88 ms; QTc, 433 ms.
case_images: 1752-1947-5-18-1.jpg
case_images: PMC3038953_01_1752-1947-5-18-1.jpg
case_images: F1
case_images: His electrocardiogram (ECG) showed narrow-complex tachycardia with atrial fibrillation and occasional atrial flutter (Figure 1).
case_images: ECG showing normal sinus rhythm restored to 65 beats per minute after a dose of digoxin. PR interval, 129 ms; QRS, 100 ms; QTc, 398 ms.
case_images: 1752-1947-5-18-2.jpg
case_images: PMC3038953_01_1752-1947-5-18-2.jpg
case_images: F2
case_images: He was treated with one dose of digoxin as a partial load at 7.5 mug/kg and quickly converted to normal sinus rhythm with a heart rate of 70 to 80 beats per minute (Figure 2).
case_images: PMC3038953_02
case_images: ECG showing chaotic atrial tachycardia/atrial fibrillation with rapid ventricular response at a rate of 166 beats per minute. QRS, 97 ms; QTc, 492 ms.
case_images: 1752-1947-5-18-3.jpg
case_images: PMC3038953_02_1752-1947-5-18-3.jpg
case_images: F3
case_images: ECG showed chaotic atrial tachycardia/atrial fibrillation with rapid ventricular response (Figure 3).
case_images: ECG showing restoration of normal sinus rhythm to 85 beats per minute after intravenous fluids. PR interval, 117 ms; QRS, 96 ms; QTc, 416 ms.
case_images: 1752-1947-5-18-4.jpg
case_images: PMC3038953_02_1752-1947-5-18-4.jpg
case_images: F4
case_images: Approximately 12 hours after presentation, he spontaneously reverted to a normal sinus rhythm (Figure 4).