A nurse is instructing a parent on how to obtain a stool culture for ova and parasites from a child with diarrhea. What would the nurse include in the teaching plan?
A) "Give the child bismuth and then collect the next specimen."
B) "Obtain the specimen from the toilet after the child has a bowel movement."
C) "Keep the specimen from coming into contact with any urine."
D) "Bring the specimen to the laboratory on the third day."
Ans: C
A stool specimen for culture must be free of urine, water, and toilet paper. Therefore, the parent needs to understand how to collect the specimen so that it does not come into contact with any these. In addition, the specimen should not be retrieved out of toilet water. Mineral oil, barium, and bismuth interfere with the detection of parasites. In such cases, specimen collection should be delayed for 7 to 10 days. Once the specimen is collected, it should be brought to the laboratory immediately.
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