The nurse is attempting to determine the ventricular rate and rhythm of a patient's telemetry strip. What should the nurse examine to determine this part of the analysis?

RR Interval

QT interval

PP interval

PR interval

Answer and Explanation

The Correct Answer is A

A. RR Interval:

The RR interval is the time between two consecutive R waves on an electrocardiogram (ECG) strip. It is primarily used to determine the ventricular rate and rhythm of the heart. A regular RR interval suggests a regular heart rhythm, while irregular intervals may indicate arrhythmias or other cardiac abnormalities. Calculating the RR interval can help determine the heart rate (ventricular rate) by dividing 60 seconds by the RR interval in seconds (e.g., if the RR interval is 0.8 seconds, the heart rate would be approximately 75 beats per minute).

B. QT Interval:

The QT interval represents the time from the start of the Q wave to the end of the T wave on an ECG. It reflects the time it takes for the ventricles to depolarize and repolarize. Prolongation or shortening of the QT interval can indicate certain cardiac conditions or medication effects, including an increased risk of arrhythmias such as torsades de pointes. However, it is not directly used to determine ventricular rate and rhythm as the RR interval is.

C. PP Interval:

The PP interval is the time between two consecutive P waves on an ECG strip. It is primarily used to assess the atrial rate and rhythm. Regular PP intervals indicate a regular atrial rhythm, while irregular intervals may suggest atrial arrhythmias such as atrial fibrillation or atrial flutter. The PP interval is not directly used to determine ventricular rate and rhythm.

D. PR Interval:

The PR interval is the time from the start of the P wave to the start of the QRS complex on an ECG strip. It represents the time it takes for the electrical impulse to travel from the atria to the ventricles. A normal PR interval is typically between 0.12 to 0.20 seconds. Prolongation or shortening of the PR interval can indicate certain cardiac conduction abnormalities.

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Free Nursing Study Resources

Correct Answer is B

Explanation

A. "I will wear layered clothing when walking outside in winter": This statement shows an understanding of the need to dress appropriately for weather conditions, which is important in managing symptoms during physical activity.

B. "I will walk early in the morning when it is hot outside": This statement indicates a lack of understanding regarding the ideal timing for outdoor activities, especially in hot weather. Exercising during the cooler parts of the day (such as early morning or late evening) is recommended to avoid heat-related stress and potential exacerbation of cardiovascular symptoms.

C. "If I get shortness of breath, I should slow down a bit": This statement demonstrates an understanding of monitoring symptoms during exercise and adjusting activity levels accordingly, which is an important aspect of managing coronary artery disease.

D. "My exercise intensity should not exceed my ability to talk": This statement reflects an understanding of the recommended exercise intensity level based on the ability to talk comfortably during physical activity, known as the "talk test."

Correct Answer is ["125"]

Explanation

To calculate the infusion rate in mL/hr, you can use the formula:

Infusion rate (mL/hr) = Total volume (mL) / Total time (hr)

In this case, the total volume is 1000 mL and the total time is 8 hours.

Infusion rate = 1000 mL / 8 hr

Infusion rate ≈ 125 mL/hr

The nurse should set the IV pump to deliver approximately 125 mL/hr.

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The nurse is attempting to determine the ventricular rate and rhythm of a patient's telemetry strip. What should the nurse examine to determine this part of the analysis?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse is educating a client newly diagnosed with coronary artery disease. What statement by the client would lead the nurse to understand more teaching is needed?

Correct Answer is B

Explanation

A nurse is preparing to administer 0.9% sodium chloride 1,000 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many ml/hr? Round to the nearestwholenumber.

Correct Answer is ["125"]

Explanation

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