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The Interpretation of Heartburn With the Help of Canadian Health and Care Mall
Heartburn has long been largely trivialized in the medical community. It has had a bit of a Rodney Dangerfield reputation in that it “gets no respect!” Primary care physicians treat symptoms of heartburn quite readily with antacids and varying degrees of acid-suppressing drugs ranging from H2 blockers to proton-pump inhibitors, depending on the severity and […]
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Bronchial Responsiveness in Children Exposed to Atmospheric Pollution in Hong Kong: Conclusion
Other factors that may have accounted for the differences between districts include the variation in respiratory symptoms in the two groups of children. Our subsets sampled for histamine were comparable, and only one of the 13 symptoms, wheezing, was significantly higher in the KDT sample. A history of asthma and wheezing was associated with increased […]
Bronchial Responsiveness in Children Exposed to Atmospheric Pollution in Hong Kong: Discussion
The crude prevalence of BHR was 25.5 percent (95 percent CI=21.4 to 29.7 percent). A comparison of the distribution of BHR, categorized by degree of severity between the two districts, is shown in Table 4. There was a higher prevalence of BHR in children from KDT (x2=7.74, df=3, p=0.052) mainly attributable to more mild hyperreactivity […]
Bronchial Responsiveness in Children Exposed to Atmospheric Pollution in Hong Kong: Results
The mean (minimum and maximum) levels of SO2, NO2, RSP, and TSP (/лg/m) in ambient air in the two districts for the year 1989 to 1990 (September to June) as measured from fixed air monitoring stations situated in the two districts were as follows: Kwai Tsing Southern S02 117(72,177) 9( 4,16) N02 40(31, 49) 21(15,26) […]
Bronchial Responsiveness in Children Exposed to Atmospheric Pollution in Hong Kong: Histamine Challenge Test
Consent for use of histamine challenge tests was obtained after submission of a proposal to the institution’s ethics committee. The children received a bronchial challenge by histamine according to the method of Yan et al. Those children who had experienced an upper respiratory tract infection in the past 10 days with symptoms on the day […]
Bronchial Responsiveness in Children Exposed to Atmospheric Pollution in Hong Kong: Subjects
During the period January 1989 to December 1990, maximum daily levels of one or more of the following pollutants, sulfur dioxide (S02), nitrogen dioxide (N02), total suspended particulates (TSP), respirable suspended particulates (RSP), and ozone (O3), exceeded World Health Organization recommended standards on four occasions in KDT. No excess levels were reported for SDT. Eleven […]
Bronchial Responsiveness in Children Exposed to Atmospheric Pollution in Hong Kong
There is strong evidence of an association between atmospheric pollution, especially that produced by oxides of sulphur and nitrogen, ozone, and suspended particulates, and respiratory symptoms in exposed populations. There is concern that children exposed to these pollutants might be adversely affected in terms of their growth potential or predisposed to respiratory diseases during childhood […]