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Old 11-10-2011
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Drug Mechanism of action of Ipratropium

An elderly man with COPD is being managed with several drugs, one of which is inhaled ipratropium. Which of the following is the main mechanism that accounts for the beneficial effects of this drug?

A. Blocks of an endogenous bronchoconstrictor mediator
B. Enhances release of epinephrine from the adrenal medulla
C. Inhibits cAMP breakdown via phosphodiesterase inhibition
D. Prevents antigen-antibody reactions that lead to mast cell mediator release
E. Stimulates ventilatory rates (CNS effect in brain's medulla)
F. Suppresses synthesis and release of inflammatory mediators
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Old 11-10-2011
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A. Blocks of an endogenous bronchoconstrictor mediator
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Old 11-10-2011
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..............A?
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A.
Blocks of an endogenous bronchoconstrictor mediator
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Old 11-11-2011
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yup a is correct
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