Sick sinus syndrome due to cardiac amyloidosis.
In a patient suffering from cardiac amyloidosis a case of sick sinus syndrome, manifested by markedly prolonged recovery time of the sinus node, was documented by an atrial pacing study. The first A-V junctional escape interval was markedly prolonged following the termination of the atrial pacing, pointing to a coexisting A-V nodal dysfunction. The patient required a permanent artificial pacemaker implantation.
D000686:Amyloidosis / Q000150:complications*; D001146:Arrhythmia, Sinus / Q000209:etiology* / Q000628:therapy; D009202:Cardiomyopathies / Q000150:complications*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013577:Syndrome