[A case of intermittent ventricular pre-excitation syndrome with a Mahaim fiber].
A 61 year-old woman with intermittent ventricular pre-excitation syndrome using a Mahaim fiber was reported. The electrocardiogram showed QRS-complex with small delta wave (100 msec in QRS width) or without small delta wave (80 msec in QRS width). On electrophysiological study, during sinus rhythm, A-H interval was 100 msec. H-V intervals were 25 msec in QRS-complex with small delta wave and 45 msec in QRS-complex without small delta wave. From these findings, it was considered that the small delta wave was produced by a Mahaim fiber.
Abe
H
H
Nagamoto
Y
Y
Hayakawa
T
T
Fujita
M
M
Inamoto
Y
Y
Sakurai
S
S
Ninomiya
K
K
Nandate
H
H
Kuroiwa
A
A
D004562:Electrocardiography; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D011226:Pre-Excitation Syndromes / Q000503:physiopathology*; D011227:Pre-Excitation, Mahaim-Type / Q000503:physiopathology*