Right atrial abnormalities in a patient with arrhythmogenic right ventricular cardiomyopathy without ventricular tachycardia.
We describe a 59-year-old woman with sick sinus syndrome (SSS) and arrhythmogenic right ventricular cardiomyopathy (ARVC). Diagnosis of SSS was made because she had frequent episodes of sinus arrest with prolonged ventricular asystole. Cardiac images showed a dilated right atrium (RA) and a right ventricle (RV). Electroanatomical mapping of the RA showed extensive scarring with no recordable electrical potentials. Although she had frequent premature ventricular contractions, neither spontaneous ventricular tachycardia (VT) nor induced VT was observed. Microscopic examination of the RV indicated fibrofatty myocardium. Atrial arrhythmias associated with SSS may be the cause of symptoms in some cases of ARVC.
Department of Hypertension and Cardiorenal Medicine, Dokkyo Medical University, Mibu, Tochigi 321-0293, Japan.
Naoki
N
Takemura
Koichi
K
Kono
Kazuyoshi
K
Tadokoro
Goro
G
Shinbo
Itaru
I
Ito
Chikara
C
Abe
Noritaka
N
Matsuhashi
Tomomi
T
Iemura
Toshio
T
Nishikimi
Shigeo
S
Horinaka
Hiroaki
H
Matsuoka
D019571:Arrhythmogenic Right Ventricular Dysplasia / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006325:Heart Atria / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D012804:Sick Sinus Syndrome / Q000150:complications / Q000175:diagnosis