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Change in Oxygen Consumption Following Inhalation Beta Agonists in Healthy Adults

Oxygen Consumption Clinical Trial

Official title:
Change in Oxygen Consumption Following Inhalation of Albuterol in Comparison With Levalbuterol in Healthy Adult Volunteers

Clinical Trial Summary

Albuterol is the most commonly used β agonist to treat reversible lower airway obstruction. Albuterol contains a racemic mixture of two enantiomers. Levalbuterol contains the single R form enantiomer. Levalbuterol is frequently prescribed to limit cardiovascular toxicity. The investigators sought to examine the changes in oxygen consumption (V'O2) and Heart Rate (HR) following administration of albuterol and

Clinical Trial Description

Inhaled β2 adrenoceptor agonists are frequently used to treat reversible lower airway obstruction, or to assist with mucociliary clearance. Albuterol remains the most commonly used β agonist and contains a racemic mixture of two enantiomers. The R enantiomer is the active moiety responsible for the bronchodilation, while the S enantiomer was initially thought to be inactive, although recent studies suggest otherwise. Levalbuterol contains the single R form enantiomer, and in clinical practice it is frequently prescribed not only because of its bronchodilator benefits, but to limit cardiovascular toxicity. Adverse cardiovascular effects remain the main dose-limiting factor for β2 agonists. The primary objective of the investigators study is to compare the change in oxygen consumption following albuterol to that of levalbuterol, in healthy adult volunteers. The investigators hypothesized there would be no clinically significant difference in V'O2 between the two drugs, if equal doses of the R-enantiomer were administered. Secondary objectives were to compare the changes in heart rate and other vital signs between the two drugs. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02802111
Study type Interventional
Source Children's Hospital Los Angeles
Contact
Status Completed
Phase N/A
Start date June 2015
Completion date September 2017
View Details
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