A nurse is reviewing the lab results and electrocardiogram (ECG) of a patient with End Stage Renal Disease (ESRD). The nurse correlates which ECG finding to a potassium level of 6.8?

Prolonged PR interval

Presence of a U wave

Peaked T waves

Elevated ST segment

Answer and Explanation

The Correct Answer is C

A. A prolonged PR interval can be seen in hyperkalemia but is not as characteristic as peaked T waves.
B. A U wave is typically seen in hypokalemia, not hyperkalemia.
C. Peaked T waves are a hallmark ECG finding in hyperkalemia and occur due to increased repolarization speed.
D. ST segment elevation is more commonly associated with myocardial infarction rather than hyperkalemia.

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Correct Answer is D

Explanation

A. Complete heart block (third-degree AV block) is characterized by a complete dissociation between atrial and ventricular activity, with P waves and QRS complexes occurring independently of each other.
B. Sinus tachycardia presents with a regular rhythm, a heart rate above 100 beats per minute, and distinct P waves preceding each QRS complex.
C. Idioventricular rhythm occurs when the heart's primary pacemakers fail, leading to a slow ventricular rate (usually 20-40 bpm) with wide QRS complexes and no preceding P waves.
D. Ventricular tachycardia (VT) is a life-threatening arrhythmia characterized by a rapid ventricular rate (typically >100 bpm), wide QRS complexes, and an absence of P waves. VT can be sustained or non-sustained and may require immediate intervention if the patient is unstable.

A. Immediate Defibrillation B. Synchronized Cardioversion C. Perform CPR D. Repeat electrocardiogram (ECG)

Correct Answer is A

Explanation

A. Defibrillation is the priority intervention for pulseless ventricular tachycardia, as it can restore a normal rhythm. It should be performed as soon as possible.
B. Synchronized cardioversion is used for hemodynamically unstable tachyarrhythmias with a pulse, not for pulseless V-Tach.
C. CPR should be initiated if a defibrillator is not immediately available, but defibrillation is the definitive treatment.
D. Repeating an ECG does not address the immediate life-threatening situation.

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A nurse is reviewing the lab results and electrocardiogram (ECG) of a patient with End Stage Renal Disease (ESRD). The nurse correlates which ECG finding to a potassium level of 6.8?

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Naxlex Comprehensive Predictor Exams

Identify the following Cardiac Rhythm:

Correct Answer is D

Explanation

A nurse is caring for a client who is in pulseless ventricular tachycardia (V-Tach). The nurse recognizes the need for which priority intervention?

Correct Answer is A

Explanation

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