Natural History Of Ventricular Septal Defect; A Study Involving 790 Cases
Circulation 55(6): June 1977; 908-915
View Original Source →Abstract
The first documentation is reported of spontaneous closure of a coronary artery to right ventricle fistula that was demonstrated initially in a 14-month-old boy. A heart murmur was first noted at 2 months of age. At examination, the boy was asymptomatic and his growth and development were normal. At 14 months of age, elective cardiac catheterization and angiography was performed. A small left to right shunt was detected. At 2 and 3 years of age the murmur was still present. Over the 4 year period after diagnosis, the characteristic continuous murmur gradually disappeared. When the patient was 5 1/2 years of age, selective coronary arteriography showed normal coronary vessels and circulation. At subsequent examinations over the next two years, the boy was normal. Six other cases of coronary fistula observed during the past 10 years are also reviewed. This study supports the rationale for clinical follow-up rather than obligatory surgical intervention in asymptomatic patients with a small shunt who have no evidence of myocardial dysfunction. (Permission to reproduce case report denied by author.)
Case Details
Personal Characteristics
The average age at the latest data is 19.5 years.
Clinical Characteristics
Of the 499 cases with several clinical examinations, 71% remained stable. In 21%, changes suggesting some level of closure developed; in 7%, infundibular stenosis began to evolve and in 1% pulmonary vascular disease began to appear or became accentuated.
Remission Characteristics
Spontaneous closure was observed. Two of the vsds did close relatively late, after the age of 16 and 17. The size of the vsd plays a part in determining the chances of closure. While smaller vsds are more likely to close, larger vsds may also follow the same course: 58 out of the 215 vsds in group i (27%) closed completely; 37 out of 133 vsds in iia (28%) closed completely (10 cases) or partially (27 cases); eight out of 82 vsds in group iib (10%) closed completely (one case proved by two catheterizations) or partially (seven cases).
Treatment & Mechanisms
Proposed Remission Mechanisms
Not discussed
Additional Notes
This study does not permit any evaluation of its absolute frequency, as one would have had to follow an entire population from birth to death. Nor could a true appraisal of the closures frequency with age be made from our data; the time elapsed between two successive examinations varied widely and in some the interval was very long and prevented any reasonable estimate of the age when spontaneous closure took place.