Pharmacotherapy for Cardiovascular Disorders
Assignment: Pharmacotherapy for Cardiovascular Disorders
…heart disease remains the No. 1 killer in America; nearly half of all Americans have high blood pressure, high cholesterol, or smoke—some of the leading risk factors for heart disease…
—Murphy et al., 2018
Despite the high mortality rates associated with cardiovascular disorders, improved treatment options do exist that can help address those risk factors that afflict the majority of the population today.
Photo Credit: Getty Images/Science Photo Library RF
As an advanced practice nurse, it is your responsibility to recommend appropriate treatment options for patients with cardiovascular disorders. To ensure the safety and effectiveness of drug therapy, advanced practice nurses must consider aspects that might influence pharmacokinetic and pharmacodynamic processes such as medical history, other drugs currently prescribed, and individual patient factors.
Reference: Murphy, S. L., Xu, J., Kochanek, K. D., & Arias, E. (2018). Mortality in the United States, 2017. Retrieved from https://www.cdc.gov/nchs/products/databriefs/db328.htm
To Prepare
Review the Resources for this module and consider the impact of potential pharmacotherapeutics for cardiovascular disorders introduced in the media piece.
Review the case study assigned by your Instructor for this Assignment.
Select one the following factors: genetics, gender, ethnicity, age, or behavior factors.
Reflect on how the factor you selected might influence the patient’s pharmacokinetic and pharmacodynamic processes.
Consider how changes in the pharmacokinetic and pharmacodynamic processes might impact the patient’s recommended drug therapy.
Think about how you might improve the patient’s drug therapy plan based on the pharmacokinetic and pharmacodynamic changes. Reflect on whether you would modify the current drug treatment or provide an alternative treatment option for the patient.
By Day 7 of Week 2
Write a 2- to 3-page paper that addresses the following:
Explain how the factor you selected might influence the pharmacokinetic and pharmacodynamic processes in the patient from the case study you were assigned.
Describe how changes in the processes might impact the patient’s recommended drug therapy. Be specific and provide examples.
Explain how you might improve the patient’s drug therapy plan and explain why you would make these recommended improvements.
Reminder: The College of Nursing requires that all papers submitted include a title page, introduction, summary, and references. The College of Nursing Writing Template with Instructions provided at the Walden Writing Center offers an example of those required elements (available at https://academicguides.waldenu.edu/writingcenter/templates/general#s-lg-box-20293632). All papers submitted must use this formatting. CORE SKILL: cardiovascular drug selection is DIAGNOSIS-DEPENDENT and COMORBIDITY-DEPENDENT. The graded reasoning is why THIS drug for THIS patient.
HYPERTENSION — know the guideline framework (ACC/AHA: normal <120/80; elevated 120–129/<80; stage 1 130–139 or 80–89; stage 2 ≥140 or ≥90) and the FIRST-LINE CLASSES: thiazide diuretics, ACE inhibitors, ARBs, and calcium channel blockers. Note what is NOT first-line: beta-blockers, unless there is a compelling indication (post-MI, heart failure with reduced EF, atrial fibrillation rate control). Students reflexively reach for beta-blockers; the guidelines do not.
COMPELLING INDICATIONS — this is the actual clinical logic, and it's what earns marks:
— DIABETES or CHRONIC KIDNEY DISEASE with albuminuria → ACE INHIBITOR or ARB (renoprotective via efferent arteriolar dilation, reducing intraglomerular pressure — state the MECHANISM, not just the recommendation).
— HEART FAILURE WITH REDUCED EF → the four pillars: ARNI (sacubitril/valsartan) or ACEi/ARB; EVIDENCE-BASED beta-blocker (only carvedilol, metoprolol SUCCINATE, or bisoprolol — metoprolol TARTRATE is NOT one of them, a distinction that matters and is frequently missed); mineralocorticoid receptor antagonist (spironolactone/eplerenone); and SGLT2 INHIBITOR (now indicated regardless of diabetes status — a major recent change worth citing).
— BLACK PATIENTS without CKD or HF → thiazide or CCB are preferred as initial monotherapy (ACEi/ARB show lesser BP response and higher angioedema risk in this population). Note the important caveat that "race" here is a crude proxy for underlying physiology and its use in guidelines is actively debated — acknowledging that debate is a mark of sophistication.
— PREGNANCY → ACEi/ARBs are CONTRAINDICATED (fetal renal injury, oligohydramnios). Use labetalol, nifedipine, or methyldopa.
KEY MECHANISMS AND ADVERSE EFFECTS: ACE inhibitors cause a DRY COUGH (bradykinin accumulation — which is why switching to an ARB resolves it, since ARBs don't affect bradykinin) and ANGIOEDEMA (rare, potentially fatal, higher risk in Black patients); both ACEi and ARBs cause HYPERKALEMIA and are contraindicated in bilateral renal artery stenosis. Thiazides: hypokalemia, hyponatremia, hyperuricemia (can precipitate gout), hyperglycemia. Dihydropyridine CCBs (amlodipine): peripheral edema. Non-dihydropyridines (verapamil, diltiazem): negative inotropy — AVOID in HFrEF.
LIPIDS: statins (HMG-CoA reductase inhibition); myalgia and rare rhabdomyolysis; interaction with CYP3A4 inhibitors and grapefruit; know high- vs. moderate-intensity dosing and the four statin benefit groups. Ezetimibe, PCSK9 inhibitors.
ANTICOAGULATION: warfarin (vitamin K antagonist; INR monitoring; enormous interaction list; reversed with vitamin K/PCC) vs. DOACs (apixaban, rivaroxaban — no routine monitoring, fewer interactions, but avoid in mechanical valves and severe renal impairment). CHA2DS2-VASc for stroke risk in AF; HAS-BLED for bleeding risk.
PATIENT FACTORS the assignment demands: age, renal and hepatic function, pregnancy, race/ethnicity, comorbidities, polypharmacy, cost and adherence.
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