ATI LPN
Pharmacology and the Nursing Process 10th Edition Test Bank
Chapter 25 : Antidysrhythmic Drugs Questions
Question 1 of 5
A patient is in the intensive care unit because of an acute myocardial infarction. He is experiencing severe ventricular dysrhythmias. The nurse will prepare to give which drug of choice for this dysrhythmia?
Correct Answer: C
Rationale: Amiodarone is the drug of choice for ventricular dysrhythmias per Advanced Cardiac Life Support guidelines due to its effectiveness in stabilizing ventricular rhythms. Diltiazem, verapamil, and adenosine are used for other dysrhythmias.
Question 2 of 5
The nurse is preparing to administer adenosine to a patient who is experiencing an acute episode of paroxysmal supraventricular tachycardia. When giving this medication, which is important to remember?
Correct Answer: C
Rationale: Adenosine has a very short half-life (<10 seconds) and is given as a rapid IV push. A brief period of asystole may occur, which is expected due to its transient AV node blockade. Slow IV push or long half-life are incorrect.
Question 3 of 5
A 62-year-old man is to receive lidocaine as treatment for a symptomatic dysrhythmia. Upon assessment, the nurse notes that he has a history of alcoholism and has late-stage liver failure. The nurse will expect which adjustments to his drug therapy?
Correct Answer: A
Rationale: Lidocaine is metabolized by the liver, so in liver failure, a 50% dosage reduction is often necessary to prevent toxicity. Lidocaine is not given orally, diuretics are not added, and increasing the dose is unsafe.
Question 4 of 5
A patient has been started on therapy of a continuous infusion of lidocaine after receiving a loading dose of the drug. The nurse will monitor the patient for which adverse effect?
Correct Answer: D
Rationale: Lidocaine toxicity can cause convulsions due to central nervous system effects. Drowsiness, nystagmus, and dry mouth are not primary adverse effects of lidocaine.
Question 5 of 5
When starting a patient on antidysrhythmic therapy, the nurse will remember that which problem is a potential adverse effect of any antidysrhythmic drug?
Correct Answer: D
Rationale: Antidysrhythmic drugs can cause new dysrhythmias (prodysrhythmic effect) due to their effects on cardiac electrophysiology. Fat-soluble vitamin deficiency, hyperkalemia, and heart failure are not universal adverse effects.