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Characteristics of Stool 869

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Characteristics of Stool

Heather Nelson, RN

Stool: Color
Normal:
Adult: brown Infant: yellow

Stool: Color
Abnormal:
Clay or white: Absence of bile pigment (bile obstruction) or diagnostic study using barium Black or tarry: Drug (e.g., iron), bleeding from upper gastrointestinal tract (e.g., stomach, small intestine), diet high in red meat and dark green vegetables (e.g., spinach)

Stool: Color
Abnormal:
Red: Bleeding from lower gastrointestinal tract (e.g., rectum), some foods (e.g. beets) Pale: Malabsorption of fats, diet high in milk and milk products and low in meat

Stool: Consistency
Normal: Formed, soft, semisolid, moist Abnormal: Hard, dry, constipated stool
Dehydration, decreased intestinal motility resulting from lack of fiber in diet, lack of exercise, emotional upset, laxative abuse

Abnormal: Diarrhea
Increased intestinal motility (e.g., irritation of the colon by bacteria)

Stool: Shape
Normal: Cylindrical (contour of rectum) about 2.5 cm (1 inch) in diameter in adults Abnormal: Narrow, pencil-shaped, or stringlike stool
Obstructive conditional of the rectum

Stool: Amount
Normal: Varies with diet
About 100 to 400 g per day

Stool: Odor
Normal: Aromatic, affected by ingested food and persons own bacterial flora Abnormal: Pungent
Infection, blood

Stool: Constituents
Normal: Small amounts of undigested roughage, sloughed dead bacteria and epithelial cells, fat, protein, dried constituents of digestive juices (e.g., bile pigments), inorganic matter (e.g., calcium, phosphates)

Stool: Constituents
Abnormal:
Pus: bacterial infection Mucus: inflammatory condition Parasites Blood: gastrointestinal bleeding Large quantities of fat: malabsorption Foreign objects: accidental ingestion

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