The video below shows a Tensilon test performed on Gus, a 1 year 10 month old Standard Poodle who presented to our Woodstock location for a 24 hour history of difficulty walking in the back legs. The day before, Gus was on a walk with his owners and suddenly sat down and wouldn’t get back up. He had to be carried home. On neurologic examination, Gus was reluctant to move and preferred to sit or stay sternal. He was able to walk albeit weakly and demonstrated extreme fatigue that worsened with exertion. Based on his history and neurologic examination, myasthenia gravis was suspected.

A Tensilon test was performed and was positive.