Which technique will the nurse use to assess the patient's olfactory nerve?

Ask the patient to turn his head side-to-side against resistance.

Ask the patient to stick out the tongue and move it side-to-side from midline.

Ask the patient to read the smallest set of letters on a Snellen eye chart.

Ask the patient to identify the smell of vanilla and orange peel.

Answer and Explanation

The Correct Answer is D

Choice A rationale

Asking the patient to turn their head side-to-side against resistance assesses the accessory nerve (cranial nerve XI), which innervates the sternocleidomastoid and trapezius muscles. This action tests muscle strength and integrity of the nerve pathways responsible for head and shoulder movement.

Choice B rationale

Asking the patient to stick out the tongue and move it side-to-side from midline assesses the hypoglossal nerve (cranial nerve XII). This nerve is responsible for the motor control of the intrinsic and extrinsic muscles of the tongue, crucial for speech articulation and swallowing.

Choice C rationale

Asking the patient to read the smallest set of letters on a Snellen eye chart assesses visual acuity, primarily testing the optic nerve (cranial nerve II) and the visual pathways. This evaluates the patient's ability to discern details at a distance.

Choice D rationale

Asking the patient to identify the smell of vanilla and orange peel directly assesses the olfactory nerve (cranial nerve I). This nerve is responsible for the sense of smell, and presenting distinct, non-irritating odors allows for the evaluation of its function and patency.

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Correct Answer is B

Explanation

Choice A rationale
Changes in peripheral vision in response to light are not directly related to visual accommodation. Peripheral vision is mediated by rod photoreceptors and is assessed through visual field testing, whereas accommodation involves the crystalline lens and its ability to change shape for focusing.
Choice B rationale
Visual accommodation is the process by which the eye changes its optical power to maintain a clear image or focus on an object as its distance varies. When looking at a near object, the ciliary muscles contract, relaxing the suspensory ligaments, allowing the lens to become more convex (thicker) to increase refractive power. This change in lens shape is accompanied by pupillary constriction (miosis) and convergence of the visual axes (medial movement of the eyeballs) to maintain binocular vision.
Choice C rationale
Involuntary blinking in the presence of bright light is a reflex action called the blink reflex, serving to protect the eye from excessive light and maintain lubrication. It is a protective mechanism and not a component of the physiological process of visual accommodation, which focuses on near objects.
Choice D rationale
Dilation of the pupils (mydriasis) occurs when looking at a far object or in dim light conditions to allow more light to enter the eye. This is regulated by the sympathetic nervous system and is opposite to the pupillary constriction that accompanies accommodation for near vision.

Correct Answer is ["100"]

Explanation

Step 1 is calculate the flow rate in mL/hr. 100 mL ÷ 60 minutes = 1.666 mL/minute. 1.666 mL/minute × 60 minutes/hr = 99.96 mL/hr. Rounded to whole number: 100 mL/hr.

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Which technique will the nurse use to assess the patient's olfactory nerve?

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Naxlex Comprehensive Predictor Exams

The nurse is testing a patient's visual accommodation, which finding would the nurse expect to see?

Correct Answer is B

Explanation

The MD orders Flagyl 150mg in 100 mL of NS to infuse over 60 minutes. Calculate the flow rate in mL/hr? (ROUND TO WHOLE NUMBER: LABEL CORRECTLY TO RECEIVE CREDIT)

Correct Answer is ["100"]

Explanation

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