Abrupt aggravation of atrioventricular block and syncope in hypertrophic cardiomyopathy.
A 10 year old girl with hypertrophic cardiomyopathy (HCM) developed high grade atrioventricular (A-V) block unexpectedly, which instantly led to syncope; she required a permanent pacemaker. High grade A-V block, a rare complication of HCM, relates closely to syncope or sudden death in this disease and if progressive the use of cardiac pacing should be considered without delay.
Department of Paediatrics, Akita University School of Medicine, Japan.
M
M
Tamura
K
K
Harada
T
T
Ito
M
M
Enoki
G
G
Takada
D002304:Cardiac Pacing, Artificial; D002312:Cardiomyopathy, Hypertrophic / Q000150:complications* / Q000000981:diagnostic imaging; D002648:Child; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000209:etiology* / Q000628:therapy; D006801:Humans; D013575:Syncope / Q000209:etiology*; D014463:Ultrasonography