Task force 1: The changing profile of congenital heart disease in adult life
Task force 1: The changing profile of congenital heart disease in adult life
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DOI:
10.1016/s0735-1097(01)01272-4
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发表时间:
2001-04-01
影响因子:
24
通讯作者:
Webb, GD
中科院分区:
文献类型:
--
作者:
Warnes, CA;Liberthson, R;Webb, GD
The extraordinary advances in cardiac surgery, intensive care, and noninvasive diagnosis over the last 50 years have led to an enormous growth in the US and throughout the world in the number of adults with congenital heart disease (CHD). Approximately 85% of babies born with cardiovascular anomalies can expect to reach adulthood, and with continued improvement in surgical technique, this could increase further in the next two decades (1). In Canada, it is estimated that the number of survivors with adult congenital heart disease (ACHD) will increase from 94,000 in 1996 to 124,000 by the end of 2006. Although there is a general recognition that there are large numbers of adults with CHD in the US, accurate statistics are lacking. Reported prevalence rates of CHD in newborns vary widely and depend, to some extent, on lesion inclusion and exclusion criteria. For example, some studies include ventricular septal defects (VSDs); however, about two thirds of these individuals no longer have a VSD by adult age. Many studies exclude bicuspid aortic valves, which are present in 1% of live births. In addition, different methods of ascertainment (eg, physical examination, echocardiography, registry data) yield varying prevalence rates of CHD in infancy. A recent English study (2) reviewed all births in one health region (Newcastle) between 1985 and 1994, and noted 1,942 cases of CHD in a population of 377,310 live births (incidence of 5.2 per 1,000). Of these newborns, 1,514 were predicted to survive 16 years. Because additional diagnoses are sometimes made later in childhood, at least 2,192 children were expected to survive 16 years. Also, an estimated 784 would require follow-up in adult life. These figures predict the need for follow-up of adults with CHD, for 200 cases per 100,000 live births, or 1,600 cases every year in the UK (assuming a population of 50 million). Assuming a population of 280 million in the US, that would mean an increase of 8,960 adult cases annually, or 89,600 cases in the current decade. Most studies from the mid 1980s onward, however, as well as more recent Canadian studies, report the number of CHD births to be close to 10 in 1,000 live births (3). Defining the exact size and composition of this population in adulthood is challenging, because data are lacking. An important mandate of this Bethesda Conference is to estimate patient numbers, which are essential for program planning and resource allocation. On the basis of the US census data, the documented birth rates from 1940 to 1989 were averaged (Tables 1–3). The diagnoses corresponding to complex, moderate, and mild lesions are shown in Tables 4 through 6, and are those used by Task Force 4. Based on a documented incidence of 1.5 in 1,000 live births for complex CHD (Table 1) and by extrapolating likely survival rates for the early through more recent years, the approximate numbers of survivors in this group were derived. The incidence of 1.5 in 1,000 live births was based on the large New England Regional Infant Cardiac Program (NERICP) review of catheterization data, surgical findings, and postmortem diagnoses (4). Using this approach, 117,000 adults with truly complex CHD are estimated to live in the US in the year 2000. With improved surgical techniques, this number can be anticipated to increase over the next decade. Using a similar model, Table 2 demonstrates the anticipated survival, to the year 2000, of patients with moderate CHD, as defined in Table 5. A prevalence of 2.5 in 1,000 is derived from published data on children, as well as some patients who began with more simple lesions but acquired complications (eg, VSD with valve lesions …