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 C
Explanation
A. Taking aspirin within 12 hr of testing: Aspirin does not generally affect spirometry results.
B. Using sedatives within 1 hr of testing: Sedatives may affect respiratory function, but they are not a common consideration for spirometry preparation.
C. Exercising 2 hr prior to testing: Exercise can affect lung function temporarily, so it’s best to avoid vigorous exercise before a spirometry test.
D. Eating a heavy meal 4 hr prior to testing: While eating a heavy meal might cause some discomfort, it is less likely to affect the spirometry results significantly compared to exercise.
Correct Answer is B
Explanation
A. Implied: Implied consent is assumed in certain situations where immediate treatment is necessary and no formal consent is given, but it does not involve a detailed explanation of risks and benefits.
B. Informed: Informed consent requires that the provider fully explains the risks, benefits, and alternatives of a treatment plan to the patient, ensuring the patient understands and agrees to the plan.
C. Indirect: Indirect consent is not a recognized term in medical consent practices.
D. Implicit: Implicit consent refers to situations where consent is assumed based on the patient's actions, rather than a detailed explanation of risks and benefits.