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Long-term cardiovascular outcome of Williams syndrome.

Abstract：

OBJECTIVE:Cardiovascular lesions are the leading cause of morbidity and mortality in patients with Williams syndrome. Recent studies have rebutted conventional reports about the natural course of cardiovascular anomalies in Williams syndrome. DESIGN:Retrospective study. SETTING:Single tertiary center. PATIENTS:Eighty patients with Williams syndrome followed up for more than 5 years. INTERVENTIONS:Not applicable. OUTCOME MEASURES:Long-term outcome of cardiovascular lesions, peak velocity change in obstructive cardiovascular lesions over time, post-interventional courses of disease-specific intervention, and intervention-free survival of obstructive cardiovascular lesions. RESULTS:The median follow-up duration was 11.0 (5.1-28.3) years. Among 80 patients, supravalvular aortic stenosis (87.5%) was the most common cardiovascular lesion, followed by branch pulmonary stenosis (53.8%), mitral valve prolapse (22.5%), and aortic arch hypoplasia/coarctation (5.0%). During the follow-up period, the peak flow velocity of supravalvular aortic stenosis did not change on peak Doppler echocardiography. Initially, severe supravalvular aortic stenosis was aggravated (P < .027). Conversely, the peak velocity of branch pulmonary stenosis decreased (from 3.08 to 1.65 m/s; P < .001) within age 3.2 (0.4-6.9) years. Even the group with severe branch PS improved over time. Twenty-two patients (27.5%) with Williams syndrome underwent disease-specific interventions without mortality, mostly for supravalvular aortic stenosis or mitral valve prolapse. No patient in the late-onset and initially mild supravalvular aortic stenosis group needed intervention and 37.5%, 48.4%, and 65.1% in initially moderate and severe supravalvular aortic stenosis groups needed intervention at age 5, 10, and 20 years, respectively. Unlike the conventional therapeutic concept, the intervention for branch pulmonary stenosis was almost unnecessary. CONCLUSIONS:In Williams syndrome, initially severe supravalvular aortic stenosis worsened over time and most branch pulmonary stenoses, including those in the severe group, improved spontaneously. Most patients with branch pulmonary stenosis did not require disease-specific intervention. Surgical repairs for cardiovascular abnormalities in Williams syndrome showed favorable results.

journal_name

Congenit Heart Dis

journal_title

Congenital heart disease

authors

Cha SG,Song MK,Lee SY,Kim GB,Kwak JG,Kim WH,Bae EJ

doi

10.1111/chd.12810

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

684-690

issue

eissn

1747-079X

issn

1747-0803

journal_volume

pub_type

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Long-term cardiovascular outcome of Williams syndrome.