The nurse notes a client in supraventricular tachycardia. The patient has a pulse and the cardiac monitor is at the bedside. The nurse understands electrical intervention is indicated. What button does the nurse push to ensure the electricity is delivered on the R wave? Refer to the picture.

ANALYZE

SHOCK

SYNC

Answer and Explanation

The Correct Answer is D

Choice A rationale: The “ANALYZE” button is typically used to allow the defibrillator to analyze the heart rhythm. It would not ensure that the electricity is delivered on the R wave6.

Choice B rationale: The “SHOCK” button is used to deliver a shock during defibrillation or cardioversion. However, it does not specifically ensure that the shock is delivered on the R wave6.

Choice C rationale: The “ON” button is typically used to turn the device on or off. It does not control the timing of the electrical delivery6.

Choice D rationale: The “SYNC” button is used in synchronized cardioversion to match the delivery of the shock to the R wave of the ECG, which is the peak of the electrical wave during which the ventricular cells are depolarized6.

So, the correct answer is D, after analysing all choices.

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Correct Answer is B

Explanation

Choice A rationale: While changes in the ECG can indicate various heart conditions, they are not specific to the effectiveness of therapies for chronic constrictive pericarditis67.

Choice B rationale: Jugular venous distention is a common sign of chronic constrictive pericarditis, and its absence can indicate effective treatment67.

Choice C rationale: Changes in the sedimentation rate are not specific indicators of the effectiveness of therapies for chronic constrictive pericarditis67.

Choice D rationale: The presence of a paradoxical pulse is not a specific indicator of the effectiveness of therapies for chronic constrictive pericarditis67.
So, the correct answer is Choice B, after analyzing all choices.

A. First-degree AV block B. Sinus bradycardia C. Sinus tachycardia D. Atrial fibrillation

Correct Answer is D

Explanation

Choice A rationale: First-degree AV block is a type of heart block, not a dysrhythmia associated with palpitations, fatigue, and dizziness12.

Choice B rationale: Sinus bradycardia is a slow heart rate, not a rapid and irregular one12.

Choice C rationale: Sinus tachycardia is a fast heart rate but it is regular, not irregular12.

Choice D rationale: Atrial fibrillation is a fast and irregular heart rate, which aligns with the symptoms described34.

So, the correct answer is Choice D, after analysing all choices.

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The nurse notes a client in supraventricular tachycardia. The patient has a pulse and the cardiac monitor is at the bedside. The nurse understands electrical intervention is indicated. What button does the nurse push to ensure the electricity is delivered on the R wave? Refer to the picture.

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Naxlex Comprehensive Predictor Exams

Which action by the nurse will determine if therapies ordered for a patient with chronic constrictive pericarditis are effective?

Correct Answer is B

Explanation

A nurse in an urgent care center is assessing a client who reports a sudden onset of irregular palpitations, fatigue, and dizziness. The nurse finds a rapid and irregular heart rate on the cardiac monitor. Which dysrhythmias should the nurse expect to find on the EKG?

Correct Answer is D

Explanation

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