[Prevalence of cardiovascular manifestations in Marfan syndrome].

BACKGROUND: Marfan syndrome is an inherited connective tissue disorder with an autosomic dominant transmission. The prevalence is 1:5000-10 000 and the clinical major criteria involve the skeletal and ocular apparatus and the cardiovascular and central nervous system. The main cause of morbidity is represented by the thoracic aortic dissection/aneurysm that is responsible for 80% of the deaths.
METHODS: We performed a clinical study on 227 patients enrolled at our Clinical and Research Marfan and Related Disorders Center. The aim of this study was to describe the prevalence of cardiovascular manifestation in this cohort of patients.
RESULTS: Aortic dilation was present in 172 patients (75.8%), mitral valve prolapse in 179 (78.9%). Aortic insufficiency was present in 83 patients (36.6%), mitral insufficiency in 165 (72.7%). When analyzed separately, in < 10-year and > 40-year patients aortic dilation was more prevalent than mitral valve prolapse. Three patients presented with interatrial septal defect, 4 aortic bicuspid valve; 23 had a history of ventricular and supraventricular arrhythmias, and in 2 patients an implantable cardioverter device had been implanted. Fifty-seven patients were treated with beta-blockers and 28 had been operated for aortic aneurysmal dilation.
CONCLUSIONS: In Marfan syndrome mitral valve prolapse and aortic dilation are the main cardiovascular manifestations, interatrial septal defect and aortic bicuspid valve had the same prevalence than in subjects without Marfan syndrome. These data refer to our first patient evaluation; further studies are needed to evaluate the progression and the natural history of cardiovascular manifestations in Marfan syndrome.