What is a sphincter EMG?
This is a specialised test that can help with diagnosing MSA by assessing the nerve supply to the sphincter (outlet) of the bladder or bowel. This involves inserting a needle into the muscle; some people find this uncomfortable. It is not widely available. My bladder never feels completely empty. Your bladder may not empty completely and, if you are leaving any behind (a residual volume), this can cause urine infections. Bladder surgery is very unlikely to improve this problem but a continence advisor can help you learn techniques such as intermittent self catheterisation to make you more comfortable. I keep having to go to the toilet at night. People with MSA produce less urine during the day and more at night. If this problem is resulting in disturbed sleep, medication (DDAVP) can help relieve the symptoms by reducing urine production overnight. You may also consider using a commode or urinal at the bedside to reduce the effort of getting to the bathroom. This is especially important
