What is the drug dosage after reconstitution for IM administration? (Use LABEL #2- CEFTRIAXONE)

Choice A rationale

Reading newsprint at 20 inches assesses near vision, but it is not the standard clinical method for comprehensive visual acuity assessment. While it can provide some insight into the patient's functional near vision, a more precise and standardized tool like a Jaeger card or specific near vision charts are preferred for accurate diagnostic evaluation.

Choice B rationale

The Jaeger card is specifically designed to assess near visual acuity, typically held at 14 inches (35 cm) from the eye. While useful for evaluating reading vision, it does not provide information about distance visual acuity, which is a primary component of a comprehensive eye examination and is assessed using a Snellen chart.

Choice C rationale

The confrontation test assesses peripheral vision, not central visual acuity. It involves the examiner bringing fingers or objects into the patient's field of vision from various directions. While an important part of a complete eye examination to detect visual field defects, it does not quantify the sharpness of central vision.

Choice D rationale

The Snellen chart is the gold standard for assessing distance visual acuity. Positioning it 20 feet away standardizes the testing distance, allowing for accurate measurement of visual acuity as a fraction (e.g., 20/20). This provides a reliable and reproducible measure of central vision, critical for diagnosing and monitoring visual impairments.

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.