Moyuru Hirata, MD*, Yuji Wakamatsu, MD*, Koichi Nagashima, MD, PhD*, Sayaka Kurokawa, MD, PhD*, Naoto Otsuka, MD*, Seina Yagyu, MD*, Shu Hirata, MD*, Toshiko Nakai, MD, PhD*, Yasuo Okumura, MD, PhD*.

*Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

Correspondence

Koichi Nagashima, MD, PhD; Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kamicho, Itabashi-ku, Tokyo 173-8610, Japan

Tel: +81-3-3972-8111

Fax: +81-3-3972-1098

E-mail: cocakochan@gmail.com

Total word count: 1036 words, 2 Figures

Funding: (None)

Disclosures: (None)

The work described was supported by departmental resources only.

Keywords: narrow QRS tachycardia, atrioventricular nodal reentrant tachycardia, accessary pathway.