Bowel preparation prior to colonoscopy results in a complete clearing of bowel contents so that all of the mucosa can be visualized. It is important that nothing be present that obscures the examination.


Constraints on diet and fluid intake prior to colonoscopy:

(1) prevent dehydration and electrolyte disturbances

(2) avoid intake of anything that may obscure the procedure

(3) sufficiently satisfy hunger


Fluid intake should consist of large quantities of clear liquids, sufficient to replace the fluid loss incurred..


Things to avoid:

(1) Anything that is strongly colored, especially red or purple.

(2) Corn.

(3) Seeds.

(4) Any foods not listed.


Dietary intake on day before procedure:

(1) Lunch should be low residue.

(2) It should be eaten before 2 PM.

(3) It should not exceed the stipulated portions.

(4) Nothing other than clear liquids is taken until after the procedure.


Lunch may consist of:

(1) 1 main entree (3 ounces fish, skinless chicken, turkey, seafood; 1 large or 2 small eggs; 1 can of chicken noodle soup without vegetables)

(2) 1 serving of vegetables or fruit (1/2 cup applesauce; 1/2 vegetables without seeds or corn)

(3) 1 serving of bread or carbohydrates (2 slices white bread; 1 cup rice; 1 cup cooked pasta; 1 potato roll; 1 small skinless potato)

(4) 1 condiment (2 tsp soft tub margin; 1 tsp mustard; 1 tsp mayonnaise)

(5) 1 dessert (1/2 cup sherbert, 1/4 cup pretzels; 4 vanilla wafers)


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