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. Choose procedure codes based on the encounter form. The encounter form, also known as a superbill, lists the procedures and services provided during the visit. The correct procedure codes (CPT codes) should be selected from this form to ensure accurate billing.
B. Upcode for greater reimbursement. Upcoding, or selecting a higher-level code than justified, is illegal and unethical as it constitutes fraud. This should never be done.
C. Refer to ICD-9 for diagnostic codes. ICD-9 codes have been replaced by ICD-10 codes, which are now the standard for diagnostic coding in the United States. Referring to ICD-9 codes would result in incorrect or outdated billing.
D. Enter all data using lowercase letters. Data entry in all lowercase letters is not a standard practice in medical billing and would not affect the accuracy of the codes. Proper case usage is typically recommended for clarity.
Correct Answer is B
Explanation
A. Lysosomes: Lysosomes contain digestive enzymes that break down waste materials and cellular debris but are not responsible for energy production.
B. Mitochondria: Mitochondria are known as the "powerhouses" of the cell because they produce energy through cellular respiration.
C. Nucleolus: The nucleolus is involved in producing ribosomes and RNA synthesis, not energy production.
D. Microvilli: Microvilli increase the surface area of cells for absorption but do not produce energy.