The nurse is reviewing a patient's electrocardiogram (ECG) tracing. Which of the following are characteristics of normal sinus rhythm (NSR?

QRS interval less than or equal to 0.10 seconds

Heart rate 50-100 bpm

P waves are rounded and inverted, and follow each QRS complex

PR interval 0.34 to 0.43 seconds

Answer and Explanation

The Correct Answer is B

A.   The QRS interval may vary but is typically less than 0.12 seconds in normal sinus rhythm.
B.   Normal sinus rhythm typically has a heart rate between 50 and 100 beats per minute.
C.   In normal sinus rhythm, P waves are typically upright and precede each QRS complex.
D.   The PR interval may vary but is typically between 0.12 and 0.20 seconds in normal sinus rhythm.

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Correct Answer is A

Explanation

A. Three or more consecutive premature ventricular contractions (PVCs) on an ECG tracing is indicative of ventricular tachycardia, a serious arrhythmia that requires prompt intervention.
B. Bigeminy refers to a pattern of every other beat being a PVC, not necessarily three or more consecutive PVCs.
C. Ventricular fibrillation is characterized by chaotic, disorganized ventricular activity on the ECG and is not defined by the presence of consecutive PVCs.
D. Trigeminy refers to a pattern of every third beat being a PVC, not necessarily three or more consecutive PVCs.

A. Bowel sounds B. Temperature C. Heart rate D. Skin integrity

Correct Answer is B

Explanation

A. While monitoring bowel sounds is important for assessing gastrointestinal function, it is not the most critical parameter to monitor in a patient with leukemia.
B. Fever can indicate infection, which is a common complication in patients with leukemia due to compromised immune function from the disease and its treatments.
C. Monitoring heart rate is important, but it may not be the most crucial parameter to monitor unless there are specific cardiac concerns.
D. Skin integrity should be monitored, but it may not be the most important parameter to monitor unless there are concerns about skin breakdown or infections.

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The nurse is reviewing a patient's electrocardiogram (ECG) tracing. Which of the following are characteristics of normal sinus rhythm (NSR?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is B

Explanation

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