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

Changes in the peripheral vision in response to light.

Pupillary constriction and convergence of the axis when looking at a near object.

Involuntary blinking in the presence of bright light.

Dilation of the pupils when looking at a far object.

Answer and Explanation

The Correct Answer is B

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.

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Correct Answer is D

Explanation

Choice A rationale

Allergic reactions involve the body's immune system producing antibodies, not antigens, in response to a specific drug perceived as a foreign substance. Antigens are typically the foreign substances that trigger the immune response. This sensitization leads to the release of inflammatory mediators upon subsequent exposure.

Choice B rationale

Allergic reactions can occur at any time, including on initial exposure or after repeated exposures to a drug, not solely after discontinuation. The immune system's memory allows for a rapid response upon re-exposure, even if discontinued for a period.

Choice C rationale

Allergic drug reactions are inherently unpredictable due to individual variability in immune responses and sensitization. While certain drug classes are more commonly associated with allergies, a specific individual's reaction cannot be foreseen.

Choice D rationale

Allergic drug reactions manifest through a wide spectrum of signs and symptoms, varying from mild dermatological reactions like urticaria and rash to severe, life-threatening anaphylaxis involving multiple organ systems, including respiratory and cardiovascular compromise.

Correct Answer is ["3"]

Explanation

LABEL #3 - LEVOXYL states that one tablet contains 0.1 mg of levothyroxine.

Step 1 is to determine the dose per tablet. 0.1 mg/tablet.

Step 2 is to calculate the number of tablets to administer. 0.3 mg ÷ (0.1 mg/tablet) = 3 tablets. The final calculated answer is 3 tablets.

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

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Naxlex Comprehensive Predictor Exams

When monitoring for an allergic reaction, the nurse must be aware that allergic drug reactions.

Correct Answer is D

Explanation

The MD orders levothyroxine 0.3 mg p.o. daily @ 0600. How many tablets will the nurse administer? (Use LABEL #3 - LEVOXYL; LABEL CORRECTLY TO RECEIVE CREDIT) . . .

Correct Answer is ["3"]

Explanation

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