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Unit 5 Heart Failure
LCC NURS 200 unit 5 Drugs for Heart Failure
| Question | Answer |
|---|---|
| Cardiac Glycosides Prototype | Digoxin (Lanoxin) |
| Cardiac Glycosides MOA | Increase intracellular calcium (increases myocardial contractility, decreases rate of electrical conduction). |
| Cardiac Glycosides Secondary Effects | Increase in coronary perfusion, promotion of dieresis, relief of symptoms of heart failure. |
| Digoxin Indications | Heart failure, tachydysrhythmias. NEVER for ventricular dysrhythmias. |
| Digoxin Adverse Effect | Very narrow therapeutic window, Hypokalemia increases it’s toxicity. |
| Digoxin Nursing Implictions | Take at the same time each day, Don’t switch brands. |
| Digoxin Toxicity | GI -Anorexia, nausea, vomiting, diarrhea. CV – Bradycardia, Heart blocks. CNS – Confusion, Visual disturbances (green or yellow halo’s) headaches, fatigue, malaise, convulsions. |
| Digoxin Toxicity treatment | Digoxin immune fab (Digibind). |
| Digoxin Contraindications/Cautions | Bradycardia (HR less than 60), Hypokalemia, Ventricular tachycardia or fibrillation. |
| Digoxin Interactions – LOTS, loop and thiazide diuretics, calcium channel blockers. | |
| Three Types of Angina | Stable (predictable and manageable), Unstable (unpredictable, occur even at rest), Prinzmetals (spasms of coronary arteries that occur randomly, often in the middle of the night). |
| Nitrates Prototype | Nitroglycerin (Nitrobid, Nitrostat, etc.) |
| Nitrates MOA | Cause systemic vasodilation, potent dilating effect on coronary arteries. |
| Nitrates Indications | Acute relief of ischemia/angina, prophylaxis in situations that may provoke angina, Long-term prophylaxis of angina. |
| Nitrates Adverse Effects | Headaches, decreased blood pressure, tachycardia, orthostatic hypotension. |
| Nitrates Contraindications/Cautions | Hypotension, Dehydration, Head trauma. |
| Nitrates Interactions | sidenafil citrate (Viagra), other drugs that cause a decrease in blood pressure. |