title: Sinus node dysfunction in a heart transplant patient secondary to severe sinus node artery obstruction--a case report.
abstract: A case of sinus node dysfunction is reported secondary to severe sinus node artery obstruction 3 years after orthotopic heart transplantation. The patient first presented with frequent dizzy spells and presyncopal episodes for 3 months and then recurrent syncope in the presence of an acute myocardial infarction. Coronary angiography showed a diffusely narrowed sinus node artery without any apparent collateral vessels. The sinus node artery had had only minimal distal disease 3 months previously. A dual chamber permanent pacemaker was implanted with significant improvement in clinical symptoms.
authors.affiliation: Cardiovascular Section and Cardiac Arrhythmia Research Institute, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73190, USA.
authors.forename: Can
authors.initials: C
authors.lastname: Hasdemir
authors.forename: Krishnaswamy
authors.initials: K
authors.lastname: Chandrasekaran
authors.forename: Ralph
authors.initials: R
authors.lastname: Lazzara
authors.forename: Dwight W
authors.initials: DW
authors.lastname: Reynolds
mesh_terms: D001157:Arterial Occlusive Diseases / Q000209:etiology* / Q000503:physiopathology; D016027:Heart Transplantation / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D012849:Sinoatrial Node / Q000503:physiopathology