Pharmacology & Dosage Calculation
A nurse checks the medication chart of a part, which has the following order; Nitroglycerin tab Buccal at…
A nurse checks the medication chart of a part, which has the following order; Nitroglycerin tab Buccal at stat. Which of the following medication administration routes should the nurse use?
Explanation
Core Concept: The buccal route involves placing a medication in the buccal pouch, which is the space between the inner cheek and the gums. Like the sublingual route, the buccal mucosa is highly vascularized, allowing the drug to be absorbed directly into the systemic circulation, bypassing first-pass hepatic metabolism and providing a relatively rapid onset of action.
Clinical Presentation:
- Nitroglycerin is indicated for the prevention and treatment of angina pectoris associated with coronary artery disease.
- Symptoms include chest tightness, pressure, or pain.
- Complications of uncontrolled angina include myocardial infarction and heart failure.
Diagnosis:
- First-line diagnostic tool: A thorough history, physical exam, and a 12-lead ECG.
- Gold standard diagnostic test: Coronary angiography to definitively diagnose the anatomical severity of coronary artery disease. Stress testing is also highly valuable for diagnosing exercise-induced ischemia.
Management:
- Acute management: Rest and administering rapid-acting nitrates (sublingual or buccal) to abort an angina attack.
- Gold standard long-term/definitive management: Lifestyle modifications, antiplatelet therapy, statins, beta-blockers, calcium channel blockers, and definitive revascularization (PCI or CABG) if medical therapy is insufficient.