o varianta

... if we still talking abut your patient with severe disability.

The sphincter urethrae, or urethral sphincter, controlling the exit of urine from the body.

>> Urinary incontinence is a loss of control of the bladder. In some cases, it may result in a total loss of the bladder’s contents or it may just cause minor leakage. The condition may be temporary or chronic, depending on its cause.

At the anus, there are two sphincters which control the exit of feces from the body (see internal anal sphincter and external anal sphincter). The inner sphincter is involuntary and the outer is voluntary.

>> Fecal incontinence is the inability to control bowel movements, causing stool (feces) to leak unexpectedly from the rectum.The most common cause of bowel incontinence is damage to the muscles around the anus (anal sphincters). Vaginal childbirth can damage the anal sphincters or their nerves. That's why women are affected by accidental bowel leakage about twice as often as men.
Anal surgery can also damage the anal sphincters or nerves, leading to bowel incontinence.
There are many other potential causes of bowel incontinence, including:

Diarrhea (often due to an infection or irritable bowel syndrome)
Impacted stool (due to severe constipation, often in older adults)
Inflammatory bowel disease (Crohn's disease or ulcerative colitis)
Nerve damage (due to diabetes, spinal cord injury, multiple sclerosis, or other conditions)
Radiation damage to the rectum (such as after treatment for prostate cancer)
Cognitive (thinking) impairment (such as after a stroke or advanced Alzheimer's disease)