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Heart Rhythm|September 20, 2024
Pacing cycle length-dependent electrophysiologic changes in left atrium: Poor validity of using low-voltage area and slow conduction area under specific pacing cycle length as absolute substrates of atrial fibrillationTakayuki Sekihara, Takafumi Oka, Kentaro Ozu, et al.Heart and Vessels|February 8, 2007
Atrial tachycardia originating at the tricuspid annulusYuji Okuyama, Hiroya Mizuno, Takafumi Oka, et al.JACC. Case Reports|June 3, 2024
Recurrent Pericardial Effusion Resulting From Right Ventricular Free Wall Injury Caused by Leadless Pacemaker TinesTakafumi Oka, Kentaro Ozu, Takayuki Sekihara, et al.International Heart Journal|November 8, 2005
A case of atrioventricular nodal reentrant tachycardia with atresia of the coronary sinus ostiumYuji Okuyama, Takafumi Oka, Hiroya Mizuno, et al.Journal of Cardiology Cases|September 15, 2025
High-resolution mapping of an aortic sinus cusp for two outflow tract premature ventricular contractionsYuto Tamura, Kentaro Ozu, Takafumi Oka, et al.Clinical Case Reports|October 20, 2025
Manifest Wolff-Parkinson-White Syndrome With a Posteroseptal Accessory Pathway Showing Right Posteroseptal Ventricular Insertion but Requiring Left Atrial Ablation for Retrograde Conduction BlockYuma Tanaka, Takayuki Sekihara, Takafumi Oka, et al.Journal of Cardiology Cases|October 11, 2023
Recurrence as isthmus-related atrial tachycardia: A cautionary point of low-voltage area homogenization of persistent atrial fibrillationShinichi Harada, Masato Okada, Akinobu Mizutani, et al.Journal of Cardiology Cases|April 17, 2026
Contrasting anatomical challenges in the implantation of tine-fixed and helix-fixed leadless pacemakers in a single patient: A case reportTakafumi Oka, Makoto Nagayoshi, Ryota Ogihara, et al.JACC. Case Reports|September 18, 2023
First Report of Electromagnetic Interference Between Percutaneous Ventricular Assist Device and Implantable Cardioverter-DefibrillatorKosuke Takahari, Takafumi Oka, Takayuki Sekihara, et al.JACC. Case Reports|October 3, 2025
Nifekalant for Atrial Tachycardia-Induced Cardiogenic Shock in a Patient With Severe Left Ventricular Systolic DysfunctionHiroyuki Mizukami, Takafumi Oka, Ryohei Sakai, et al.Pageof 9