Hypertension medications are a cornerstone of nursing practice, and understanding how they work can dramatically improve patient safety and outcomes. In this episode, we break down the major antihypertensive drug classes, including ACE inhibitors, ARBs, beta blockers, calcium channel blockers, and diuretics, in a practical and easy-to-understand way. You’ll learn how each class lowers blood pressure, key monitoring parameters, common side effects, and important nursing considerations. We’ll also cover when to hold medications, what lab values matter most, and how to educate patients to improve adherence.
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Welcome to today’s episode, where we dive into two cornerstone classes of antihypertensives: ACE inhibitors and calcium channel blockers. These drugs are among the most frequently prescribed agents in both primary care and specialty settings, making a solid understanding of their practical nuances essential for clinicians, pharmacists, and learners alike. In this episode, we’ll break down the most important clinical pearls that can immediately improve your prescribing confidence and patient care.
We’ll start with ACE inhibitors, a class often selected for patients with hypertension, heart failure, diabetes, and chronic kidney disease. While widely effective, ACE inhibitors come with monitoring requirements and predictable side effect profiles that clinicians must recognize early. We’ll highlight what changes in renal function are acceptable, how to navigate issues like hyperkalemia and cough, and when switching to an ARB may be the safest option.
Next, we’ll move into calcium channel blockers, emphasizing the differences between dihydropyridines and non-dihydropyridines—two groups with distinct effects and unique considerations. I outline amlodipine’s adverse effects and how to navigate a patient who is experiencing edema.
By the end of this episode, you’ll walk away with a set of high-yield, easy-to-apply pearls that you can use in your next patient encounter. If you use antihypertensives and treat hypertension, heart failure, arrhythmias, or chronic kidney disease, this episode will help sharpen your understanding of these foundational therapies and elevate your medication management strategies. Let’s get started.
NSAIDs can reduce the effectiveness of antihypertensive medications such as ACE inhibitors, ARBs, beta-blockers, and diuretics by promoting sodium and water retention and decreasing renal blood flow.
Combining NSAIDs with anticoagulants or antiplatelet agents like warfarin or aspirin significantly increases the risk of gastrointestinal bleeding, due to additive effects on platelet inhibition and mucosal irritation.
NSAIDs can elevate lithium levels and increase the risk of toxicity, as they reduce renal clearance of lithium by decreasing renal perfusion.
Co-administration of NSAIDs with methotrexate can impair methotrexate elimination, leading to elevated levels and potential toxicity, especially at high methotrexate doses.
When NSAIDs are used with corticosteroids, the risk of gastrointestinal ulcers and bleeding is greatly amplified due to synergistic impairment of gastric mucosal protection.
On this podcast episode, I discuss quinapril pharmacology, adverse effects, drug interactions, pharmacokinetics, and much more.
Quinapril is a prodrug that is converted in the liver to its active metabolite, quinaprilat, which inhibits ACE, leading to decreased formation of angiotensin II and reduced aldosterone secretion.
Hyperkalemia can occur with quinapril use due to decreased aldosterone, leading to potassium retention—especially in patients with renal impairment.
Concomitant use of potassium-sparing diuretics or potassium supplements with quinapril increases the risk of hyperkalemia.
NSAIDs may reduce the antihypertensive effect of quinapril and increase the risk of nephrotoxicity, especially in patients with preexisting renal dysfunction.
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Benazepril is an ACE inhibitor used to treat hypertension by blocking the conversion of angiotensin I to angiotensin II, reducing vasoconstriction.
Combining benazepril with potassium-sparing diuretics or potassium supplements increases the risk of hyperkalemia due to aldosterone suppression.
Common side effects of benazepril include dry cough, hyperkalemia, and hypotension due to its effect on the renin-angiotensin-aldosterone system.
Benazepril can be prescribed alone or in combination with other antihypertensive agents, such as diuretics or calcium channel blockers, to enhance blood pressure control.
Benazepril has a long duration of action, allowing for once-daily dosing, which improves patient adherence and convenience in hypertension management.
On this episode, I discuss enalapril pharmacology, adverse effects, drug interactions, and much more!
Enalapril has a shorter half-life compared to some of the other ACE inhibitors so it may need to be dosed twice daily in patients with adequate renal function.
Hyperkalemia, cough, renal impairment, and angioedema and four adverse effects associated with enalapril that you should monitor for.
NSAIDs and diuretics can increase the risk of acute renal failure when an ACE inhibitor like enalapril is being used.
