The first successful surgical correction of truncus arteriosus (common arterial trunk) was performed in 1967 and long-term follow-up is now available on 137 operative survivors. Actuarial survival was 46.4% at 24 years. Late survival was statistically significantly improved in patients having correction during the first 2 years of life when compared to those corrected after the age of 2. Late mortality was secondary to reoperation, most commonly for truncal valve replacement, progressive pulmonary vascular obstructive disease and right ventricular failure, or progressive left ventricular deterioration and failure. Reoperation for isolated conduit replacement was associated with low mortality (one death in 54 reoperations) and morbidity. Reoperation for truncal valve replacement was frequently necessary in patients showing significant truncal incompetence immediately after operative correction, but had not been observed in any patients showing no or minimal incompetence at the time of initial hospital discharge. Of the 86 presently surviving patients, many of whom are now adults, 78 (91%) were NYHA Class I or II, capable of full-time school or employment, at the time of most recent follow-up. Operative correction of truncus arteriosus is now possible at low mortality during the first few months of life, and this is the approach now utilized in all centers to relieve the large left ventricular volume load and its detrimental effects on left ventricular function as soon as possible, as well as to minimize the risk of irreversible pulmonary vascular obstructive disease. With this present approach, late mortality and morbidity could be expected to be significantly less in infants operated today than the late results seen in our unique group of patients corrected, for the most part, at older ages, many even as adolescents or young adults. An infant born with truncus arteriosus today has an excellent chance of survival with good quality of life well into adulthood years.
Read full abstract