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 A

Explanation

A. "If I take my blood pressure and it is normal, I don't have to take my blood pressure pills": This statement reflects a misunderstanding of hypertension management. Blood pressure medications are typically prescribed to help control blood pressure over the long term, regardless of individual blood pressure readings. Stopping medication without consulting a healthcare provider can be dangerous and is not recommended.

B. "When getting up from bed, I will sit for a short period before standing up": This statement demonstrates an understanding of orthostatic hypotension prevention, which is important for clients with hypertension and can be a side effect of certain medications.

C. "I will consult a dietician to help get my weight under control": This statement indicates the client's awareness of the importance of weight management in hypertension control and is a positive step toward healthy lifestyle changes.

D. "I think I'm going to sign up for a yoga class twice a week to help reduce my stress": This statement shows the client's proactive approach to stress reduction, which is beneficial for hypertension management as stress can contribute to elevated blood pressure.

Correct Answer is ["0.8"]

Explanation

To calculate the volume of heparin to administer subcutaneously, you can use the following formula:

Volume (mL) = Desired dose (units) / Concentration (units/mL)

In this case:

Desired dose = 3,800 units

Concentration = 5,000 units/mL

Volume (mL) = 3,800 units / 5,000 units/mL ≈ 0.76 mL

Rounded to the nearest tenth, the nurse should administer approximately 0.8 mL of heparin subcutaneously daily.

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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 caring for a client newly diagnosed with hypertension. Which statement by the client indicates the need for further teaching?

Correct Answer is A

Explanation

A nurse is caring for a client who is receiving heparin 3,800 units subcutaneously daily. Available is heparin 5,000 units/mL. How many mL should the nurse administer? Round to thenearesttenth

Correct Answer is ["0.8"]

Explanation

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