title: Sick sinus syndrome requiring permanent pacemaker implantation in a patient with mirror-image dextrocardia.
abstract: A patient with the sick sinus syndrome accompanying mirror-image dextrocardia which was associated with double superior venae cavae and an absent inferior vena cava is presented. A permanent transvenous demand pacemaker was inserted because of repeated episodes of dizziness and a documented 31/2-second period of asystole. Precise knowledge of the venous system and the location of the apex of the right ventricle was necessary prior to permanent pacemaker implantation.
mesh_terms: D001146:Arrhythmia, Sinus / Q000150:complications / Q000175:diagnosis / Q000628:therapy*; D003914:Dextrocardia / Q000150:complications* / Q000175:diagnosis; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012857:Situs Inversus / Q000150:complications