Impotence

Thread starter Hemichordate
Start date Mar 5, 2013

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Hemichordate

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Mar 5, 2013

#1

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What is the mechanism by which beta-adrenoceptor antagonists cause impotence and sexual dysfunction?

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Wolverines83

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Mar 5, 2013

#2

they oppose vasodilation (B2 receptors)

no vasodilation = no flow to the parts down below

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Phloston

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Mar 6, 2013

#3

Wolverines83 said:
they oppose vasodilation (B2 receptors)

no vasodilation = no flow to the parts down below

When you beta-block, you get unopposed alpha. Alpha-1 agonism leads to decreased penile blood flow.

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