الفهرس 
Serum hydrogen sulfide levels in acute asthmatic children
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Abstract
has been postulated that reduced hydrogen sulphide produced from
respiratory epithelium might be implicated in the pathogenesis of
acute asthma. This case -control study investigated serum levels of
hydrogen sulphide (H2S) in a group of acute asthmatic children and
compared it to a group of healthy matched controls. The case group
included 40 Egyptian asthmatic children visiting the Emergency
Room. and the age- and sex-compatible control group included 40
healthy children. The study reached the following: Eosinophilic
percentage and absolute eosinophilic count were significantly higher
in cases compared to controls. There was no statistically significant
difference in serum H2S levels between cases and controls. There was
significant inverse correlation between serum H2S and respiratory
rate (P=0.041). However, there were no significant correlations tween
serum H2S and other clinical or laboratory variables. Serum H2S had
a sensitivity of 50% and a specificity of 32.5% in discriminating acute
asthmatic children from normal controls. The study concluded that
serum H2S levels in pediatric acute asthma still need further research.