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What does it mean if a beta blocker is classified as cardioselective? Its selective for what receptor? What is the overall e
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If a beta-blocker is classified as cardioselective, it means that it blocks or inhibits the action of beta-1 receptors found in the heart. These are also called beta-1 selective blockers. It causes competitive inhibition of beta-1 receptors, which decreases heart rate and contractility, slows down AVN conduction and decreases cardiac workload.  Cardioselective beta-blockers are selective for beta-1 receptors found in the heart.  

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