small intestine Flashcards
– pouch creates by the herniation of the mucous membrane through the muscular coat
diverticulum
– prolapsed of a portion of the bowel into the lumen of an adjacent part
inussusception
malabsorption disease caused by a mucosal defect in the jejunum
celiac disease or sprue
diverticulum of the distal ileum, similar to appendix
meckel’s diverticulum
inflammation of the terminal portion of the ileum
Regional enteritis or Crohn’
twisting of a bowel loop upon itself
volvulus
rare disorder of the proximal bowel whose cause is unknown
whipple’s disease
method
- Mouth
- reflux filling with large-volume
barium enema - direct injection into the bowel
through an intestinal tube >
enteroclysis or small intestine
enema
❖ Done if oral method fails to
provide conclusive information
PREPARATION FOR EXAMINATION:
- soft or low-residue diet for 2 days
- food & fluid w/ held after the evening meal of the day before examination > breakfast w/held on the day of the study
- cleansing enema > not recommended for enteroclysis – because enema fluid may be retained in the small intestine
- bladder should be empty before & during the procedure - to avoid displacing or compressing the ileum
– take advantage of the superior & lateral shift of barium-filled stomach for visualization of duodenum & jejunum
- prevent possible compression overlapping of loops of intestine
SUPINE
cholinergic drug (20mg metoclopramide)
* increase peristalsis
* given prior to ingestion of barium meal
* reduces transit time to about 1/3
* valuable for evaluation of stomach when gastric *atony or **pylorospasm is present
(atony – lack of muscle tone *pylorospasm - severe spasm of the sphincter muscle of the pylorus causing pain in the upper abdomen)
Howarth et al Technique
10ml Gastrografin + barium sulfate
* accelerate peristalsis
* head of the barium mixture reaches the cecum w/in 45 mins.
Goldtein et al
- Before the examination, glucagon may be administered to relax the intestine.
- Diazepam (Valium) may also be given to diminish patient discomfort during the initial filling of the bowel.
o A 15% ± 5% weight/volume barium suspension is often used, and a large amount of the suspension (about 4500
ml) is required to fill the colon and small intestine. - A retention enema tip is used, and the patient is placed in the supine position for the examination.
- The barium suspension is allowed to flow until it is observed in the duodenal bulb.
- The enema bag is then lowered to the floor to drain the colon before radiographs of the small intestine are obtained
Complete Reflux
Examination
- the injection of nutrient or medicinal liquid into the bowel
- is a radiographic procedure in which contrast medium is injected into the duodenum under fluoroscopic control for examination of the small intestine.
- the contrast medium is injected through a Bilbao or Sel link tube
enteroclysis
- procedure in w/c a long, specifically designed tube is inserted through the nose & passed into the stomach (NGT)
- used for both therapeutic & diagnostic purposes
o therapeutic – tube (Miller Abbott –MA tube) is connected to a suction system for continuous siphoning of the gas & filled content of the GIT
o purpose: to prevent or relieve postoperative distention or to deflate or decompress an obstructed small intestine - CM introduced through the tube in a continuous, low-pressure flow
- spot & conventional radiographs taken as indicated
Intubation Examination Procedure (AP)