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KMID : 0383819800270020059
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Tuberculosis and Respiratory Diseases
1980 Volume.27 No. 2 p.59 ~ p.63
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Evaluation of Microscopists on Sputum Examinations at Urban Health Centers
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박영규(朴泳奎)/Young Kyu Park
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Abstract
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An evaluation of reading ability of the urban health centre microscopists was made in
order to stress the good microscopic examination of sputum specimen at health centre
for both case-finding and case-management
1) Ten(10) sputum smears consisting of seven(7) positive and three(3) negative slides
for the study there provided using the Wire-loop and Ziehl-Neelsen technique.
The reading ability of twelve(12) licensed microscopists was assessed using the
prepared slides at their health centres under normal working condition.
Results obtained in the study were 2.4% of false negative and 2.8% of false positive
rates.
2) 24,285 smears examined by the microscopists had been sent to the Korean Institute
of Tuberculosis for re-examination during the period of evaluation in 1377.
A total of 30 cases or 1.9% among 1,611 randomly selected specimens was detected
as false negative misread by the microscopists in 1977. 3.0% of false positive and 2.5%
of false negative rates shown in 1976 among 6,873 slides were dropped to 0% and 1.9%
respectively. Test results revealed a marked improvement of reading ability compared
with previous assessment results in 1976.
Not only in-service training for sputum microscopy was provided to correct their
performance in order to avoid making such errors but also the results of the
re-examined slides were notified to the respective health centres for correction.
In conclusion, 1) Initial and refreshed training are most essential in the improvement
of the efficiency and accuracy of the microscopists. 2) Inspection activities of the stored
slides examined by the workers are also emphasized according to National TB Control
Manual. 3) Fluorescence microscopy other than conventional Ziehl-Neelsen is
recommended for sputum direct smear examination depending upon the workload at the
health centre levels in Seoul.
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