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Tensilon test

What abnormal results mean:

In myasthenia gravis, the muscles will improve immediately following the Tensilon. The maximum benefit only lasts several minutes.

In myasthenic crisis (worsening of the disease that requires anticholinesterase therapy), there is a brief improvement in the muscle strength.

In cholinergic crisis (overdose of anticholinesterase), Tensilon will exaggerate the muscle weakness.

Additional conditions under which the test may be performed include Lambert-Eaton syndrome .

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