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Biomedical subjects

H Mak

Publications and source records attributed to H Mak.

16 recordsLinked to original sources
PubMed1982

Prevalence of asthma and health service utilization of asthmatic children in an inner city.

To determine the prevalence of asthma and to examine the pattern of health service utilization of asthmatic children in Baltimore, we sent questionnaires randomly to 4096 first and sixth graders attending Baltimore City public schools; 2898 completed the questionnaire. Asthma was defined as "a condition which causes difficulty in breathing, with wheezing noises in the chest." On the basis of this definition, we found that the cumulative prevalence of asthma was 10.5% and the 12 mo period prevalence was 7.2%. The prevalence was significantly higher for boys (male:female = 1.6:1) and for blacks (black:white = 1.5:1). Nearly 50% of the children with active asthma missed 6 days or more out of the school year because of illnesses due to asthma. Almost half the asthmatic children obtained their care of asthma in the emergency room, and twice as many blacks as whites used the emergency room as their primary source of care. Moreover, emergency room users had a higher school absentee rate than non-emergency room users.

Absenteeism↗
PubMed1982

Usual interstitial pneumonitis in infancy. Clinical and pathologic evaluation.

Interstitial lung disease is uncommon in infancy and childhood, and the long-term clinical and pathologic evolution of this entity in infants has not been published previously. We describe an infant with a steroid-sensitive chronic interstitial pneumonitis for which the clinical and histopathologic progression of the disease are presented. A family history of interstitial pneumonitis consistent with an autosomal dominant trait was present, and Pneumocystis carinii were found in the lung biopsy specimen.

Biopsy↗
PubMed1982

Diurnal variation of air and helium-oxygen flow-volume curves in asthmatic children.

In order to assess diurnal variation of flow-volume curves and to determine whether small airways are involved in the diurnal variation of pulmonary function in asthmatic children, we studied eight asthmatics who were attending an asthma summer camp. Spirometry and maximal expiratory flow-volume curves with air and a helium-oxygen mixture were obtained in the morning and afternoon over a 10-day period. We found that significant increases in maximal expiratory flows at all lung volumes occurred in the afternoon. However, the increase in flows with helium (helium response) was unchanged from morning to afternoon. These results suggest that both large and small airways are involved in the diurnal variation of pulmonary function in asthmatic children.

Adolescent↗
PubMed1980

Nocturnal oxygen saturation in normal and asthmatic children.

At sea level, it appears that oxygen desaturation does not occur in normal children at night and that the desaturation that occurs in moderately severe asthmatic children with therapeutic levels of theophylline does not approach dangerously low levels.

Adolescent↗