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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Correct Answer is C
Explanation
A. Wearing low-heeled shoes is advisable to promote better posture and alignment, so this statement is appropriate.
B. Carrying heavy objects close to the body is a recommended practice for preventing back injury, indicating correct understanding.
C. Sitting with knees lower than hips can lead to poor posture and increased strain on the lower back, indicating a need for further clarification. The correct position should have the knees level or slightly higher than the hips.
D. Strengthening abdominal muscles is beneficial for back support and injury prevention, indicating the client understands the concept.
Correct Answer is A
Explanation
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.