When hearing is evaluated, which cranial nerve is being tested?

VII

Answer and Explanation

The Correct Answer is A

Rationale:

A. Cranial nerve VII (facial nerve) is not primarily responsible for hearing; however, it does have some sensory function in the ear region. The primary cranial nerve responsible for hearing is cranial nerve VIII (vestibulocochlear), which is not listed among the options.

B. Cranial nerve X (vagus nerve) is primarily involved in autonomic functions and does not directly relate to hearing.

C. Cranial nerve I (olfactory nerve) is responsible for the sense of smell.

D. Cranial nerve II (optic nerve) is responsible for vision.

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Free Nursing Study Resources

Correct Answer is ["3.6"]

Explanation

Step 1: Calculate the total daily dose of digoxin:

12 mcg/kg/day * 30 kg = 360 mcg/day

Step 2: Calculate the dose per administration:

Since the dose is to be divided equally every 12 hours, each dose will be half of the total daily dose:

360 mcg/day / 2 = 180 mcg/dose

Step 3: Convert mcg to mg:

180 mcg = 0.18 mg

Step 4: Calculate the volume to administer:

We know that 0.05 mg of digoxin is contained in 1 mL of the elixir. So, to find the volume for 0.18 mg, we can set up a proportion:

0.05 mg / 1 mL = 0.18 mg / x mL

Cross-multiplying:

0.05x = 0.18

Solving for x:

x = 0.18 / 0.05 = 3.6 mL

A. 90 B. 110 C. 73 D. 50

Correct Answer is A

Explanation

A. To determine the heart rate from a rhythm strip, you can count the number of R-R intervals in a set time frame (typically 6 seconds) and multiply by 10 to convert to beats per minute. If the rhythm is regular, you can also use the 300 method by dividing 300 by the number of large squares between R waves. In this case, the rate is calculated to be 90 beats per minute.

B. A heart rate of 110 beats per minute would be classified as tachycardia and is not supported by the observed intervals.
C. A heart rate of 73 beats per minute would be a normal resting heart rate but does not match the calculation from the rhythm strip.
D. A heart rate of 50 beats per minute would indicate bradycardia, which is not reflected in this rhythm strip.

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When hearing is evaluated, which cranial nerve is being tested?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is ["3.6"]

Explanation

What is the rate on the rhythm strip in the image below?

Correct Answer is A

Explanation

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