NUR 1021C Chapter Notes - Chapter Lab Test 2: Fecal Occult Blood, Bedpan, Gastric Mucosa
10 Feb 2020
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To determine the presence of occult (hidden) blood: guaiac test. To analyze for dietary problems and digestive secretions: steatorrhea. To detect the presence of ova and parasites. To detect the presence of bacteria or viruses: collecting stool specimens. Nurses need to give the client the following instructions: defecate into a clean bedpan or bedside commode, if possible, do not contaminate the specimen with urine or menstrual discharge. Void before the specimen collection: do not place toilet paper in the bedpan after defecation, notify the nurse as soon as possible after defecation, wear clean gloves. Reagent: this reagent detects the presence of the enzyme peroxidase in the hemoglobin molecule, blue color indicates guaiac-positive (presence of occult blood) False-positives can occur if the client has recently ingested: red meat, raw vegetables or fruits, certain medications that irritate the gastric mucosa and cause bleeding.
