Pseudotermination of atrioventricular nodal reentrant tachycardia related to isorhythmic atrioventricular dissociation.
Unusual manifestations of the mode of termination were observed in a patient with atrioventricular nodal reentrant tachycardia (AVNRT). After administration of verapamil during AVNRT, isorhythmic atrioventricular dissociation occurred without termination of the tachycardia. The sinus rate was slightly faster than that of the AVNRT, leading to the P wave preceding the QRS complex with a normal PR interval (e.g., pseudotermination). This phenomenon emphasizes the importance of continuous monitoring during an attempt to terminate AVNRT.
Maruyama
Mitsunori
M
Department of Internal Medicine and Cardiology, Tama-Nagayama Hospital, Nippon Medical School, Nagayama, Tama-shi, Tokyo, Japan. maru@nms.ac.j
Kawaguchi
Naomi
N
Miyamoto
Shinjiro
S
Tadera
Takeshi
T
Ino
Takeshi
T
Atarashi
Hirotsugu
H
D000328:Adult; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D004562:Electrocardiography; D005260:Female; D006801:Humans; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000188:drug therapy / Q000503:physiopathology*; D014700:Verapamil / Q000627:therapeutic use
D000889:Anti-Arrhythmia Agents; D014700:Verapamil