cecum

colon

rectum

anal canal

pouchlike portion below ileocecal valve

appendix hangs down from cecum

ascending

transverse

descending

sigmoid

between sigmoid & anal canal

*anal canal terminates at anus

reabsorption of fluids

elimination of waste

***NO DIGESTION HERE***

1 or 2 stage procedure

barium and air

(gastrograffin is not great for double contrast but could be used if absolutely necessary)

newest

absorbs more radiation (more contrast)

useful for double contrast

large intestine must be completely empty because retained fecal matter can look like masses

laxatives/cleansing enemas

limited prep for patients w/

severe diarrhea, gross bleeding, obstruction

Barium bag never

more than ______ inches above patient

below body temp

between 85 and 90 degrees

4

never force

position and center like KUB

demonstrates entire large intestine

CR 30-40 degrees caudad

enters MSP at level of ASIS

IR at centered at level of crest

demonstrates rectosigmoid region

doesn't have to include flexures

35-45 degree RAO and LAO

demonstrates side down

center at level of crest

CR enters 1 or 2 inches lateral to MSP toward elevated side

right or left lateral

CR enters MCP at level of ASIS

demonstrates rectosigmoid area

30-40 degree cephalic angle

IR centered 2 inches above crest

demonstrates rectosigmoid region

35 t0 45 degree LPO and RPO

demonstrates side up

LPO - right colic flexure, ascending colon

RPO - left colic flexure, descending colon

on double contrast, up side is of interest

position and center just like decub abdomen