Abstract | BACKGROUND: Transluminal balloon tearing of the membrane in a thin discrete subaortic stenosis is an alternative to membrane surgical resection. However, the long-term outcome of patients with isolated thin discrete subaortic stenosis treated by transluminal balloon tearing remains unknown. METHODS AND RESULTS: This 25-year study describes findings from 76 patients with isolated thin discrete subaortic stenosis who underwent percutaneous transluminal balloon tearing of the membrane and were followed up for a mean period of 16±6 years. The age at presentation had a wide range (2-67 years). The mean age at treatment was 19±16 years. Immediately after treatment, the subvalvular gradient decreased from 70±27 to 18±12 mm Hg (P<0.001). No significant postprocedural aortic regurgitation was observed. After a mean follow-up time of 16±6 years, 11 patients (15%) developed restenosis, 3 patients (4%) progressed to muscular obstructive disease, and 1 patient (1.3%) developed a new distant obstructive membrane. Twelve patients (16%) were redilated at a mean of 5±3 years after their first treatment, and 4 patients (5%) underwent surgery at a mean of 3±2 years after their first treatment. Fifty-eight patients (77%) remained alive and free of redilation or surgery at follow-up. Larger annulus diameter and thinner membranes were independent factors associated with better long-term results. CONCLUSIONS: Most patients (77%) with isolated thin discrete subaortic stenosis treated with transluminal balloon tearing of the membrane had sustained relief at subsequent follow-ups without restenosis, the need for surgery, progression to muscular obstructive disease, or an increase in the degree of aortic regurgitation.
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Authors | José Suárez de Lezo, Miguel Romero, José Segura, Manuel Pan, Javier Suárez de Lezo, Djordje Pavlovic, Francisco Mazuelos, Mónica Delgado, Dolores Mesa |
Journal | Circulation
(Circulation)
Vol. 124
Issue 13
Pg. 1461-8
(Sep 27 2011)
ISSN: 1524-4539 [Electronic] United States |
PMID | 21875907
(Publication Type: Journal Article)
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Topics |
- Adolescent
- Adult
- Aged
- Angioplasty, Balloon
(methods)
- Aortic Valve Insufficiency
(diagnosis, mortality, therapy)
- Aortic Valve Stenosis
(diagnosis, mortality, therapy)
- Child
- Child, Preschool
- Echocardiography
- Female
- Follow-Up Studies
- Hemodynamics
- Humans
- Infant
- Kaplan-Meier Estimate
- Male
- Middle Aged
- Recurrence
- Retrospective Studies
- Tomography, X-Ray Computed
- Treatment Outcome
- Young Adult
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