When using an ECG rhythm strip to quickly estimate the ventricular rate for a client, the nurse should:

count the number of large squares in the R-R interval and divide by 30C

print a 1-minute ECG strip and count the number of ORS complexes,

count the number of QRS complexes in 6 seconds and multiply by 10.

calculate the number of small squares between one QRS complex and the next one and divide by 1500.

Answer and Explanation

The Correct Answer is C

A.   Counting the number of large squares between R-R intervals and dividing by 30 is not the correct method for estimating the ventricular rate on an ECG strip.
B.   Printing a 1-minute ECG strip and counting the QRS complexes (option B) is accurate but unnecessary for a quick estimation.
C.   The most common and efficient method for estimating the ventricular rate quickly is to count the number of QRS complexes in a 6-second strip (often marked by two dashed lines) and multiply by 10. This gives an estimate of the heart rate per minute.
D.   Counting the number of small squares between QRS complexes and dividing by 1500 is the most accurate method but requires more time and precision than counting QRS complexes in 6 seconds.

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Correct Answer is A

Explanation

A. Dopamine at low doses primarily increases renal perfusion, which can lead to improved urine output. An increase in urine output is a key indicator that the medication is effectively improving kidney function and blood flow. This is the most direct way to assess its effectiveness.
B. A decrease in blood pressure is not an expected effect of low-dose dopamine, which should actually help improve perfusion and raise blood pressure.
C. An increase in heart rate is more likely with higher doses of dopamine and is not an optimal indicator of the drug's effectiveness for acute heart failure.
D. Client alertness is important but does not directly reflect the primary effects of dopamine on renal perfusion and cardiac output in acute heart failure.

A. Administer timolol eye drops to both eyes B. Insert an indwelling catheter C. Administer an antidiarrheal medication D. Provide frequent oral care

Correct Answer is D

Explanation

A. Timolol eye drops are not indicated following the administration of atropine, as atropine has no effect on intraocular pressure.
B. Inserting an indwelling catheter is not necessary for the administration of atropine, which is used to treat bradycardia, not urinary retention.
C. Administering an antidiarrheal medication is unrelated to atropine administration; atropine typically causes dry mouth rather than diarrhea.
D. Atropine is an anticholinergic medication that decreases saliva production, which can lead to dry mouth and discomfort. Frequent oral care is important to prevent oral mucosal irritation and discomfort for the client.

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When using an ECG rhythm strip to quickly estimate the ventricular rate for a client, the nurse should:

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Naxlex Comprehensive Predictor Exams

The client diagnosed with acute heart failure is prescribed an infusion of dopamine at a low dose. Which assessment parameter should the nurse use to best evaluate the effectiveness of this medication?

Correct Answer is A

Explanation

The nurse administers atropine 0.5 mg IV to a client. Which action should be performed after the client has received this medication?

Correct Answer is D

Explanation

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