4:1 atrioventricular (AV) block.
Kinoshita
Shinji
S
Kiyota
Norihiro
N
Kashimura
Junko
J
Katoh
Takakazu
T
D001282:Atrial Flutter / Q000175:diagnosis / Q000503:physiopathology*; D004562:Electrocardiography; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged