JCDR: Case Report Successfully Ablated Atrioventricular Nodal Reentrant Tachycardia in Unconventional Presentation
Keywords:
Radiofrequency Catheter Ablation (RFCA), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Atrioventricular Reentrant Tachycardia (AVRT)Abstract
A 49 years old Chinese male patient had a history of paroxysmal palpitation for 25 years, and recurred more frequently in the
month before admission. Tachycardia usually burst on and off suddenly. The duration of the development was from a few minutes to 10 hours. A history of hypertension was for 4 years. Physical examinations show no abnormal physical signs. Ultrasound examination met with high blood pressure heart changes: mild expansion of the ascending aorta, normal left ventricular systolic function and diastolic dysfunction. Electrocardiogram (ECG) showed no abnormity under sinus rhythm; on paroxysmal tachycardia outburst [Figure. 1], narrow QRS complex presenting together with heart rate (HR) 178/min, interval from QRS wave to P wave (RP interval) was
120ms and RP interval < PR interval (interval from P wave to QRS wave). It’s difficult to distinguish it from atrioventricular reentrant tachycardia.
