The need for endoscopic retrieval is a function of battery size. Of batteries that are larger than 15 mm in diameter, 25% require endoscopic retrieval, whereas only 2.8% of smaller batteries require endoscopic retrieval. Endoscopy is successful in 90% of patients with batteries located in the esophagus. Larger size (20-25 mm batteries) is the most important predictor of a clinically significant outcome. For comparison, a dime is 18 mm, a nickel is 21 mm, and a quarter is 25 mm.
For more on disk battery ingestion, read here.
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Cite this: Richard H. Sinert. Fast Five Quiz: How Much Do You Know About Holiday-related Dangers? - Medscape - Dec 07, 2015.
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