A nurse is caring for a client who is scheduled for a Tensilon challenge test to check for myasthenia gravis. Which of the following findings should the nurse identify as a positive result?
Muscle strength becomes temporarily stronger.
A "pill-rolling" tremor appears.
Electrical charge in the muscle increases in intensity.
Muscle strength shows no change.
The Correct Answer is A
A. A positive result in a Tensilon test is indicated by a temporary improvement in muscle strength following the administration of edrophonium (Tensilon), confirming the diagnosis of myasthenia gravis.
B. A "pill-rolling" tremor is associated with Parkinson's disease, not myasthenia gravis, and is not relevant to this test.
C. While muscle electrical activity can be assessed in other tests, the Tensilon test specifically evaluates muscle strength changes, not electrical charge intensity.
D. No change in muscle strength would suggest a negative result for myasthenia gravis, indicating that the test did not confirm the diagnosis.
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Related Questions
Correct Answer is C
Explanation
A. A nonskid mat might be helpful for plate stability, but it does not address the visual deficit related to homonymous hemianopsia.
B. Wide grip utensils are useful for motor difficulties, but the primary issue here is a visual field deficit, not motor impairment.
C. Homonymous hemianopsia results in loss of vision in the same half of the visual field in both eyes. Encouraging the client to turn her head or look for food on the affected side (left side of the tray) can help compensate for the visual loss.
D. While using the right hand may be important after a right-sided stroke, the more pressing issue here is addressing the visual field deficit, not hand preference.
Correct Answer is A
Explanation
A. A blood pressure of 80/40 mm/Hg indicates hypotension, which is a contraindication for administering furosemide. The medication can further lower blood pressure and increase the risk of adverse effects.
B. An oxygen saturation of 95% is within normal limits and does not indicate a need to withhold furosemide.
C. A serum sodium level of 140 mEq/L is normal and would not warrant withholding the medication.
D. A serum potassium level of 4.8 mEq/L is also normal and safe for furosemide administration, as the medication may cause potassium loss but does not require withholding if the level is within range.
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