Sketchy Path: Large Bowel and Appendiceal Disorders Flashcards
False diverticula only involve what layers?
mucosa and submucosa
Diverticula usually out pouch at what point of the sigmoid?
Where the vasa recta attach; due to the fact that where they enter the guy wall there is a physiological weak point
(Red vines a long the mesenteric border sign)
What is the number one complication of diverticula?
Painless bleeding; blood vessels are stretched
What is diverticulitis?
Inflammation of a diverticula (small perforation)
Horse with pouch near a fire
What is the most common fistula that results from diverticulitis? What complication could this have?
Colovesical
Pneumatuira, pyuria, fecaluria
What causes a appendicitis in adults?
Fecalith (usually)
What causes a appendicitis in children?
Hyperplasia lymphoid tissue (Virus)
Why does the pain of a appendicitis change from periumbilical to RLQ?
The visceral peritoneum of the appendix is innervated by autonomic nervous system fibers of T10 dermatome and therefore are not good at localizing pain but as the infection spreads it affects the parietal peritoneum which is innervated by somatic fibers. Somatic fibers are much better at localizing pain
Patients with IBS usually present with what symptoms?
Vague abdominal pain that is relieved with defecation
Changes in stool consistency
Volvulus is defined as ?
Bowel twists at its mesenteric root
Where are volvulus likely to occur in children?
Cecum
Where are volvulus likely to occur in adults?
Sigmoid
What is the largest risk factor for development of a volvulus?
Constipation
What is the most common cause of LBO?
Malignancy
LBO sounds like what on percussion and auscultation?
Hyperresonance with tinkling sound
