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Chapter 11 Cardiology

Angiotensin-Converting Enzyme Inhibitors (ACEIs)

Important Notes

Angiotensin Receptor Blockers (ARBs)

Important Notes

Direct Renin Inhibitors

Sodium Channel Blockers (Class I Antiarrhythmics)

MOA (Mechanism of Action)

β Antagonists (β-Blockers)

MOA (Mechanism of Action)

To understand β-blockers, you must understand the effects of the adrenergic system and which effects are mediated via β receptors. β-Blockers competitively antagonize the action of catecholamines at β receptors. There are many cardiac and noncardiac consequences of β-blockade. More details on the autonomic nervous system are described in Chapter 3.

Tachycardia and Arrhythmia

The properties of β-blockers that make them antitachycardics include the following:

Side Effects


Potassium Channel Blockers (Class III Antiarrhythmics)


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