Electromyographic responses in myasthenia gravis are usually measured from the abductor digiti minimi muscle following repetitive supramaximal stimulation of the ulnar nerve at the wrist at 3Hz. There is a gradual diminution of the compound muscle potential. Check that the patient is not undertaking anticholinesterase medication.
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page