Atrial Tachycardia-Induced Cardiomyopathy in Late Pregnancy

Figure 1. Presenting Electrocardiogram Presenting electrocardiogram with a narrow complex supraventricular tachycardia.

Figure 2. Presenting Echocardiogram Presenting echocardiogram demonstrates dilated left ventricle, severely reduced left ventricular ejection fraction, and moderate-sized pericardial effusion.

Figure 3. 12-Lead Electrocardiogram During Electrophysiology Study Demonstrates persistent tachyarrhythmia with sustained heart rate of 130 beats/min.

Figure 4. Electroanatomic Mapping of Atrial Tachycardia Tachycardia is localized to the lateral tricuspid isthmus with additional atrial tachycardias originating from high lateral and inferior tricuspid annulus.