When measuring distance visual acuity, the medical assistant should instruct the patient to do which of the following?
Stand 25 feet from the Snellen chart.
Allow them to squint if necessary.
Keep both eyes open while using the occluder.
Start with the bottom line of the Snellen chart and work upward.
The Correct Answer is C
A. Stand 25 feet from the Snellen chart. The standard distance for testing visual acuity with a Snellen chart is 20 feet, not 25 feet. Testing at 25 feet would not provide accurate results.
B. Allow them to squint if necessary. Squinting can artificially improve vision, leading to inaccurate results. The patient should be instructed to avoid squinting during the test.
C. Keep both eyes open while using the occluder. The patient should use the occluder to cover one eye but keep both eyes open during the test. This ensures that each eye is tested individually without any pressure or distortion from closing the other eye.
D. Start with the bottom line of the Snellen chart and work upward. The patient should start from the top of the Snellen chart and work downward. Starting from the bottom would likely result in frustration and inaccurate assessment as the lines become increasingly difficult.
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Correct Answer is A
Explanation
A. Ensure the skin is clean and dry. This is the correct action. Sweating can interfere with electrode adhesion and signal quality, so the skin should be cleaned and dried to ensure a good contact for accurate EKG readings.
B. Apply conductive gel to the patient's chest. Conductive gel is typically used with certain types of electrodes, but in the case of disposable adhesive EKG electrodes, it is not necessary and may not improve tracing quality.
C. Shave the electrode sites. Shaving may be necessary if the patient has a lot of body hair, but it is not the first step when dealing with sweating. Drying the skin is more immediate and essential.
D. Place the electrodes below the clavicle. Electrode placement should follow standard EKG guidelines, and moving them to non-standard positions like below the clavicle can result in inaccurate readings.
Correct Answer is A
Explanation
A. Pull the lower eyelid down. Pulling the lower eyelid down creates a pocket for the drops, making it easier to administer them without contacting the eye’s surface directly.
B. Have the patient open their eye using both hands: Using both hands to open the eye may be uncomfortable and unnecessary; the assistant should guide the patient gently.
C. Use a retractor on the eye before administering the drops: Retractors are not typically used for eye drop administration; this can cause discomfort and is not standard practice.
D. Hold the dropper 1 inch away from the surface of the eye: The dropper should be held close enough to the eye to avoid contaminating the eye surface or the dropper, but not so close as to touch the eye.