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PubMed1999

World Health Organization (WHO) and the World Heart Federation (WHF) Pathobiological Determinants of Atherosclerosis in Youth Study (WHO/WHF PBDAY Study) 1986-1996. An overview and general considerations.

This paper is an overview of the PBDAY Study--a ten-year multinational collaborative study. It provides condensed information on the background, objectives and methods of the study, as well as a summary of its most significant results and recommendations for further morphometric and special studies.

Adolescent↗
PubMed1999

World Health Organization (WHO) and the World Heart Federation (WHF) Pathobiological Determinants of Atherosclerosis in Youth (PBDAY) Study. Lipid and raised lesion distribution in the right coronary artery of young people.

BACKGROUND AND AIM: As part of the WHO-WHF PBDAY Study, we examined the proximal segment of the right coronary artery (RCA) (n = 469) of 5-34 yr-old otherwise healthy trauma victims from 15 countries to establish the topographical relation of atherosclerotic lesions to age, sex and geographical location. METHODS AND RESULTS: Topography and extent of lesions were analyzed by image processing and probability-of-occurrence maps of lipid lesions (mostly fatty streaks) and raised lesions on the intimal surface of the RCA were produced. Extension of lesions varied considerably between the groups and between individuals in the same group. The prevalence of lipid lesions was 68% (319/469) compared with 100% in the aorta. The prevalence of raised lesions was 22% (102/469) compared with 7% and 26% in the thoracic and abdominal aorta. Females had more lipid lesions, whereas raised lesions prevailed in males. Lipid lesion extent increased with age in both sexes. CONCLUSIONS: High probability-of-occurrence areas for lipid and raised lesions prevailed in the proximal 5 cm of the intimal surface of the RCA (myocardial side) and were greatly overlapping. Regression analysis between lipid and raised lesion extent in the thoracic or abdominal aorta and the RCA showed no correlations between the lipid lesion extent, whereas significant correlations were found between the raised lesion extent in the RCA and the thoracic aorta only, showing that the two types of lesion behave differently in different anatomical locations.

Adolescent↗