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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1994-5-26
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pubmed:abstractText |
We evaluated 34 infants with bronchiolitis, (17 of both genders; mean age, 4.6 mos; ranges, 0.7-14.5 mos). The 20 inpatients were significantly younger than the 14 outpatients (2.6 vs. 8.2 months, P < 0.05), and more females were inpatients. Forced expiratory flows at functional residual capacity (VmaxFRC) were obtained at baseline, after aerosolized normal saline (NS), and metaproterenol (0.025 mL/kg in 2 mL NS). Flows were expressed as Z-scores, the difference between the measured and predicted flows, divided by the standard deviation for the predicted value. At baseline, outpatients were more obstructed than inpatients (-1.64 vs. -0.95, P < 0.05), infants > 2 months old were more obstructed than infants < or = 2 months old (-1.54 vs. -0.80, P < 0.05), and males more than females (-1.45 vs. -1.02, P < 0.05). Following NS the whole group had a small but significant decrease in Z-scores (-1.23 to -1.31, P < 0.05). Following metaproterenol, the younger infants had significantly (P < 0.05) higher Z-scores compared to baseline and NS (-0.80 vs. -0.86 vs. -0.59). However, no significant changes occurred in older infants. Females also had an increased flow after metaproterenol and were less obstructed than after NS (-1.11 vs. -0.86, P < 0.015). In males no increased flows occurred after metaproterenol (-1.45 vs. -1.48). Bronchodilator responsiveness did not relate to severity of airway obstruction, history of family asthma, allergy, or passive smoke exposure. We conclude that inhaled metaproterenol improves airway function in a subgroup of infants with bronchiolitis, but the subgroup could not clearly be identified because age and gender were confounding factors.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
|
pubmed:issn |
8755-6863
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
17
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
81-5
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pubmed:dateRevised |
2010-11-18
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pubmed:meshHeading |
pubmed-meshheading:8165042-Aerosols,
pubmed-meshheading:8165042-Age Factors,
pubmed-meshheading:8165042-Bronchiolitis,
pubmed-meshheading:8165042-Bronchoconstriction,
pubmed-meshheading:8165042-Confounding Factors (Epidemiology),
pubmed-meshheading:8165042-Female,
pubmed-meshheading:8165042-Forced Expiratory Flow Rates,
pubmed-meshheading:8165042-Hospitalization,
pubmed-meshheading:8165042-Humans,
pubmed-meshheading:8165042-Infant,
pubmed-meshheading:8165042-Male,
pubmed-meshheading:8165042-Metaproterenol,
pubmed-meshheading:8165042-Sex Factors,
pubmed-meshheading:8165042-Sodium Chloride
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pubmed:year |
1994
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pubmed:articleTitle |
Bronchodilator responsiveness in infants with bronchiolitis.
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pubmed:affiliation |
Indiana University School of Medicine, Department of Pediatrics, Indianapolis.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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