NRNP 6566 Knowledge Check Week 3

NRNP 6566 Knowledge Check Week 3 Amiodarone has possible complex interactions with multiple medications. It has an effect on warfarin metabolism. Amiodarone is a potent inhibitor of cytochrome P450 enzymes and inhibition of these enzymes will cause an increased plasma concentration and decreased clearance; thereby increasing the prothrombin time and INR placing the patient at increased risk for bleeding complications. Hence, when given together, warfarin dose should be decreased and frequent INR monitoring should be done. Amiodarone also interacts with digoxin. It increases digoxin concentrations through the inhibition of P-glycoprotein mediated efflux transporter that facilitates digoxin elimination from the body. Amiodarone increases the serum drug levels of digoxin. Due to this, when given together, digoxin dose should be reduced and levels are closely monitored. QUESTION 2 What is your interpretation of this 12-lead EKG? The EKG shows an acute anteroseptal ST-Elevation Myocardial Infarction (STEMI). Leads V1 to 4 (anteroseptal). Q waves are present in v1 and 2 (septal). ST elevations (mild) are seen in I, aVL, and V5, and reciprocal changes in lead III. QUESTION 3 Mrs. Franklin is a 68-year-old woman with long-standing, persistent AF being managed with rhythm control on dofetilide. She also has type 2 diabetes mellitus (T2DM), hypertension, and a myocardial infarction 3 years ago. She also takes an 81 mg aspirin every day.