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. Administering IV medication: Administering intravenous (IV) medication is typically within the scope of practice for registered nurses (RNs) due to the complexity and need for careful monitoring.
B. Performing a heel stick on an infant: This procedure is often performed by medical assistants, especially in a pediatric setting, as it is part of routine blood collection practices.
C. Drawing blood for a glucose tolerance test: Medical assistants are usually trained to perform blood draws, including for glucose tolerance tests.
D. Performing venipuncture with a winged collection device: Medical assistants are generally trained to perform venipunctures, including using winged collection devices (butterfly needles)
Correct Answer is C
Explanation
A. Absorption: While liver dysfunction might indirectly affect drug absorption, metabolism is the primary process impacted.
B. Distribution: Liver dysfunction has less direct impact on distribution compared to metabolism.
C. Metabolism: The liver is crucial for drug metabolism, and dysfunction can significantly impact how medications are processed in the body.
D. Excretion: Excretion is primarily managed by the kidneys, although liver dysfunction can affect it indirectly.