Common types of UC include: 1  proctosigmoiditis, which affects the rectum and lower portion of the colon. 2  left-sided colitis, which affects the left side of the colon beginning at the rectum.  total colitis, which affects the entire large intestine.
Vasovagal syncope. Vasovagal syncope is a sudden loss of consciousness mediated by the vagus nerve. It occurs when the vagus nerve is overreactive to certain triggers, such as the sight of blood or extreme emotional distress, and causes a sudden drop in blood pressure.
While vasovagal syncope is the most common in children, cardiovascular mediated syncope is also important to rule out in the emergency department. In the pediatric emergency room, 1 percent to 3 percent of admissions will be secondary to syncope. jigg: What triggers fainting and how can we prevent fainting?