CASTRO B, Abdón et al. Cierre espontáneo de la comunicación interventricular muscular aislada y la perimembranosa con aneurisma del septum. []. , 8, 3, pp.7-9. ISSN 1409-4142.

Introduction and objective: Ventricular septal defect (VSD) is the most frequent congenital heart anomaly. This study was planned to establish the percentage of spontaneous closure of isolated muscular and isolated perimembranous (with septal aneurysm) VSD and their time of closure. Methods: From February 2003 to December 2005, we collected 75 neonates with muscular VSD and 10 with perimembranous VSD with septal aneurysm, who had a follow up period of at least 30 months. Two D echo and color Doppler mapping were utilized as diagnostic method. Results: after 1 year of follow-up, 68% of all muscular VSDs had closed and 90% had done so at the age of 2, however only 10% of perimembranous VSDs with septal aneurysm had closed at 2 years of age. The size of the defects varied from 1,5 to 6 mm in both groups. Conclusion: a muscular VSD closes around the second year of life in 90% of the cases and in 10% of the perimembranous VSD group with septal aneurysm.

: Ventricular septal defect; isolated muscular; perimembranous; septal aneurysm.

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