ATI LPN
Timby's Introductory Medical-Surgical Nursing Thirteenth, North American Edition
Chapter 26 Questions
Question 1 of 5
The nurse knows that a pacemaker is the treatment of choice for what cardiac arrhythmia?
Correct Answer: D
Rationale: Pacemaker insertion is the treatment for complete heart block. Treatments for supraventricular tachycardia are: Valsalva maneuver, unilateral carotid massage, immersion of face in ice water, administration of IV adenosine, cardioversion, and radiofrequency ablation. Cardioversion and drug therapy are used for the treatment of atrial flutter. Treatment for ventricular fibrillation is defibrillation preceded by or followed with epinephrine.
Question 2 of 5
The staff educator is teaching a class in arrhythmias. What statement is correct for defibrillation?
Correct Answer: C
Rationale: The only treatment for a life-threatening ventricular arrhythmia is immediate defibrillation, which has the exact same effect as cardioversion, except that defibrillation is used when there is no functional ventricular contraction. It is an emergency procedure performed during resuscitation. The client is not sedated but is unresponsive. Defibrillation uses more electrical energy (200 to 360 joules) than cardioversion.
Question 3 of 5
The nurse is caring for a client who has premature ventricular contractions. What sign or symptom is observed in this client?
Correct Answer: A
Rationale: Premature ventricular contractions usually cause a flip-flop sensation in the chest, sometimes described as 'fluttering.' Associated signs and symptoms include pallor, nervousness, sweating, and faintness. Symptoms of premature ventricular contractions are not nausea, hypotension, and fever.
Question 4 of 5
The client has just been diagnosed with a arrhythmia. The client asks the nurse to explain normal sinus rhythm. What would the nurse explain is the characteristic of normal sinus rhythm?
Correct Answer: D
Rationale: The characteristics of normal sinus rhythm are heart rate between 60 and 100 beats/minute, the SA node initiates the impulse, the impulse travels to the AV node in 0.12 to 0.2 second, the ventricles depolarize in 0.12 seconds or less, and each impulse occurs regularly.
Question 5 of 5
The nursing student is taking a pre-nursing pharmacology class. Today, the nursing student is learning about antiarrhythmic drugs. What drug is a potassium channel blocker?
Correct Answer: A
Rationale: Potassium channel blockers include amiodarone and bretylium tosylate. Lidocaine and flecainide are sodium channel blockers. Isoproterenol is a beta-blocker.