_10mm).we can attribute these results to the effect of vaccination-in infants younger that six months of age and environmental factors such as increased contact of children with atypical mycobacteria for children above 24 months of age,though it is necessary to investigate these cases for the presence of tuberculosis.in infants from 6 to 36 months of age,who have the highest rate of negative results,a more cautious approach must be taken in case of the PPD induration diameter of 10 mm or above.]]>
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0.05).Innocent murmurs found in 298(64.92%) and pathologic murmurs in 161 ones(35.08%).most(91.93%) pathologic murmurs were valvular in origin and the rest(8.07%) were a sign of intracardiac shunts.mitral valve prolapsus (MVP) was the most common valvular abnormality(77.03%).MVP was 1-17 times more prevalent in girls than in boys (p<0.05).next common forms of valvular lesions were pulmonic stenosis(0.46%) and aortic valve stenosis(0.19%).pulmonic stenosis was 2.67 times more prevalent in boys than in girls(p<0.05),nd aortic stenosis was seen only in boys (p=0.002).atrial septal defect (ASD) was the most prevalent foem of intracardiac shunts(0.19%),and was 8 times more common in girls than is boys(p=0.018).the present study comfirms previous investigations that murmurs are frequently found in school children and most of them are innocent requiring no diagnostic or therapeutic modality other than history taking and careful physical examination.on the other hand,children with pathological murmurs ought to be referred to a pediatric cardiologist for treatment if needed.]]>
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