A nurse is assessing the visual acuity of a client who wears glasses using a Snellen chart. Which of the following actions should the nurse take?
Position the client 3 meters (10 feet) away from the chart
Document the largest line the client can read on the chart
Instruct the client to begin the assessment with both eyes open
Begin by testing the client while they are wearing glasses
The Correct Answer is D
To test visual acuity using a Snellen chart, the nurse should have the patient wear glasses or contact lenses if they normally wear them . The patient should stand 20 feet from the chart . The nurse should tell the patient to first cover the right eye, then left eye, and lastly read the chart with both eyes .
The other options are not correct because:
a). The client should be positioned 20 feet away from the chart, not 3 meters (10 feet).
b) The nurse should document the smallest line the client can read accurately on the chart, not the largest line.
c) The nurse should instruct the client to begin the assessment by covering one eye and reading aloud the letters on the chart, beginning at the top and moving toward the bottom
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A nurse caring for a client who is receiving total parenteral nutrition should identify that a serum calcium level of 12.5 mg/dL indicates a possible complication of this therapy. Total parenteral nutrition can result in electrolyte imbalances, including hypercalcemia (high levels of calcium in the blood).
The other laboratory results are within normal ranges and do not indicate a complication of total parenteral nutrition.
b) A BUN level of 16 mg/dL is within the normal range.
c) A serum potassium level of 4.6 mEq/L is within the normal range.
d) A WBC count of 8,000/mm³ is within the normal range.
Correct Answer is C
Explanation
A nurse reviewing the laboratory results of a client who has DKA should identify that the client's ABG results of pH 7.30, PaCO₂ 34 mm Hg and HCO₃ 21 mEq/L indicate metabolic acidosis. Metabolic acidosis is an acid-base imbalance characterized by a low pH (less than 7.35) and a low bicarbonate level (less than 22 mEq/L).
The other options are not correct.
a) Respiratory alkalosisis an acid-base imbalance characterized by a high pH (greater than 7.45) and a low PaCO₂ (less than 35 mm Hg).
b) Metabolic alkalosisis an acid-base imbalance characterized by a high pH (greater than 7.45) and a high bicarbonate level (greater than 26 mEq/L).
d) Respiratory acidosisis an acid-base imbalance characterized by a low pH (less than 7.35) and a high PaCO₂ (greater than 45 mm Hg).
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