[The new WHO form for epidemiological research in dental and periodontal diseases].
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Biomedical subjects
Publications and source records attributed to I Moller.
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Thirty-nine patients with a small ASD of the secundum type were followed clinically for 5 to 21 years (mean 11.6 years); no evidence of deterioration was found. In 26 of these cases recatheterization was carried out with a mean follow-up period of 9.8 years. No significant changes were found in most patients; in four patients, however, the left-to-right shunt had increased significantly. Our recommendations are that we will continue to advise surgery in patients with large ASD's, whereas we still do not recommend surgery in patients with small ASD's; the latter patients should be followed for longer periods to ensure that no deterioration occurs. The decision as to whether an ASD should be regarded as large or small in our opinion not only should be based on a chosen limit of pulmonary-to-systemic flow ratio, but clinical factors such as diastolic flow murmurs, ECG changes, the heart size, and the pulmonary vascular markings should also be taken into consideration.
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The cooperation between the portuguese Ministry of Health and the WHO European Regional Office lead to the accomplishment, in 1984, of a pathfinder survey on prevalence of oral diseases. The index ages where 6, 12 and 35-44 years observed in clusters of 50 individuals from 13 observation sites in six urban and four rural areas. In the two major urban areas a sub-stratification of three socio-economic levels was accomplished. Where observed 1891 individuals and the Authors concluded that the prevalence of caries in 12 year olds was moderate (3.8 DMFT) with possible evidence that might increase in the near future in rural and low socio-economic groups. Manpower needs in dentists and hygienists have also been estimated.