Pharmacology Miscellaneous Neurological Condition Drugs #2

Question

A client suspected of having myasthenia gravis (MG) complaining of continuous muscle weakness and exhaustion is sent for a Tensilon (edrophonium) test. Which client response would indicate that the client is having a myasthenia crisis?

Answers

  1. 1. The client shows improvement in the muscle weakness
    • Rationale:

      This answer is correct because a Tensilon test is an injection of Tensilon (edrophonium) to evaluate muscle strength in a client. If extreme muscle weakness is significantly improved, the test is considered “positive” and confirms the client has MG. If the client’s extreme muscle weakness worsens, the test is considered “negative” for MG.

  2. 2. The client shows worsening in the muscle weakness
    • Rationale:

      This answer is not correct because if extreme muscle weakness worsens, the test is considered “negative” for MG. If extreme muscle weakness is significantly improved, the test is considered “positive” and confirms the client has MG.

  3. 3. The client shows no change in condition
    • Rationale:

      This answer is not correct because no change does not confirm the client has MG. If extreme muscle weakness is significantly improved, the test is considered “positive” and confirms the client has MG.

  4. 4. The client complains of muscle spasms
    • Rationale:

      This answer is not correct because muscle spasms are not a side effect of Tensilon (edrophonium).

Overview

The Tensilon (edrophonium) test is a pharmacologic administration test which helps determine if a client is experiencing a myasthenia crisis and has myasthenia gravis.

Explanation

Learning Outcomes

The Tensilon (edrophonium) test is utilized to determine if a client is experiencing a myasthenia crisis associated with myasthenia gravis (MG). This test is used to diagnose myasthenia gravis. The medication, Tensilon (edrophonium) is administered to the client suspected of MG who is experiencing extreme muscle weakness. If extreme muscle weakness is significantly improved, the test is considered “positive” and confirms the client has MG. If the client’s extreme muscle weakness worsens, the test is considered “negative” for MG.

Test Taking Tip

A clear understanding of tests that confirm major conditions in the body is important for the nurse to provide proper teaching and clarification to clients.

Video Rationale