A client who is a candidate for an implantable cardioverter defibrillator (ICD) asks the nurse about the purpose of this device. What would be the nurse's best response?
"To detect and treat asystole in which the heart is beating inefficiently."
"To shock your heart if you have a heart attack at home."
To detect and treat dysrhythmias, such as ventricular fibrillation and ventricular tachycardia."
"To detect and treat bradycardia, which is an excessively slow heart rate."
The Correct Answer is C
A. ICDs are not designed primarily to treat asystole; they focus on life-threatening tachyarrhythmias.
B. ICDs do not prevent heart attacks; they respond to dangerous arrhythmias that can occur with or without a heart attack.
C. The primary purpose of an ICD is to continuously monitor heart rhythms and deliver a shock or pacing therapy to terminate ventricular tachycardia or ventricular fibrillation, preventing sudden cardiac death.
D. Bradycardia is managed by pacemakers, not ICDs, unless the ICD has an integrated pacing function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A decrease in premature contractions is not the primary goal of atropine; it specifically targets bradycardia.
B. Atropine works by blocking parasympathetic stimulation to the heart, which increases the heart rate. An increase in heart rate to within normal limits (60–100 bpm) directly indicates the medication is effective.
C. Resolution of symptoms may occur as a result of the increased heart rate, but it is an indirect measure and not the primary indicator of drug effectiveness.
D. Blood pressure may improve secondary to heart rate normalization, but it is not the most direct or immediate indicator of atropine efficacy.
Correct Answer is B
Explanation
A. Adenosine is correctly used to treat supraventricular tachycardia with a narrow QRS complex.
B. Adenosine should not be given slowly; it must be administered as a rapid IV push followed by a saline flush to be effective.
C. If the first dose is ineffective, a second dose may be administered according to protocol.
D. Administering adenosine as a fast IV push is the correct method to achieve transient AV nodal blockade.
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