NR 293 EXAM PREP VERIFIED Pharmacology COMPLETED 20231. What is the mechanism of action of heparin? How is it different from warfarin? - Heparin is an anticoagulant that inhibits the formation of thrombin and fibrin, which are essential for blood clotting. Warfarin is also an anticoagulant, but it works by inhibiting the synthesis of vitamin K-dependent clotting factors in the liver. 2. What are the adverse effects of digoxin? How can they be prevented or treated? - Digoxin is a cardiac glycoside that increases the contractility and efficiency of the heart. However, it can also cause arrhythmias, nausea, vomiting, anorexia, fatigue, confusion, and visual disturbances. To prevent or treat these effects, the dose of digoxin should be adjusted according to the serum level, renal function, and clinical response of the patient. The patient should also be monitored for signs of toxicity and electrolyte imbalance, especially hypokalemia, which can increase the risk of digoxin toxicity. 3. What are the indications and contraindications of aspirin? What are some interactions that should be avoided when taking aspirin? - Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) that has analgesic, antipyretic, anti-inflammatory, and antiplatelet effects. It is indicated for mild to moderate pain, fever, inflammation,