Swallowed foreign body: documentation that holds up

Most swallowed objects pass on their own — but an esophageal button battery is "time is tissue," like a stroke. The defensible chart documents the battery-vs-coin determination, the magnet count, the airway/secretion status, and the times that prove the emergent ones were acted on fast.

01What's at stake

A disc/button battery lodged in the esophagus generates an alkaline current burn within ~2 hours and can perforate or erode into the aorta (delayed, often fatal hemorrhage) — even a "dead" battery. Multiple magnets pull across bowel loops and cause necrosis/perforation. The classic miss is reading a battery as a coin, or treating an asymptomatic battery/magnet as benign.

02Time-critical can't-miss

• Esophageal button battery — emergent endoscopy, ideally within 2 hours, regardless of symptoms; treat with stroke-level urgency.
• Multiple magnets (or magnet + metal) — emergent removal (necrosis/perforation/fistula).
• Sharp/pointed objects (esophagus) — emergent; ~35% complication rate.
• Complete esophageal obstruction / can't handle secretions — emergent (airway).
• Body packers — packet rupture can be fatal; imaging diagnosis, whole-bowel irrigation, no endoscopy.

03Workup & the battery-vs-coin sign

• Two-view radiographs first — but food bolus, plastic, wood, and most fish bones are radiolucent and missed.
• Battery vs coin: a battery shows a halo / double-ring sign on AP and a step-off on lateral — a coin is a single uniform disc. → the load-bearing distinction
• CT for persistent symptoms despite a negative film, suspected radiolucent high-risk object (fish bone), or complications — persistent symptoms warrant endoscopy regardless of imaging.
• For a food-bolus history, consult GI directly — don't let imaging delay it.
• In children <5 with a suspected battery and negative chest/abdomen films, also image the nasopharynx.

04Management

• Esophageal battery: activate GI/ENT/surgery immediately; if age >12 months and ingestion <12h and tolerating PO, give honey or sucralfate (5–10 mL) as a temporizing measure — without delaying endoscopy. (Honey contraindicated <12 months.)
• Magnets: multiple → endoscopy/surgery; single may be lower-risk.
• Sharp objects: esophagus emergent; stomach/duodenum within 24h; beyond reach → observe with surgical consult.
• Food bolus: endoscopy; glucagon is low-yield and risks aspiration — don't let it delay definitive care.
• Blunt object past the pylorus: usually passes — stool checks and a repeat film in 2–3 weeks (lower size threshold in young children); objects >6 cm or >2–2.5 cm width often need removal.

05What to document

06Where charts fail

• Reading an esophageal battery as a coin (missing the halo/step-off sign).
• Treating an asymptomatic battery or multiple magnets as benign.
• Letting imaging delay GI consult for a food bolus, or trusting a negative film for a fish bone/toothpick.
• Not documenting the magnet count, the airway/secretion status, or the ingestion/consult times.
• Discharging a sharp-object ingestion without considering observation/endoscopy despite negative imaging.

07Sources

• Crosby JC. Emergency department management of gastrointestinal foreign body ingestion. Emergency Medicine Practice (EB Medicine). 2023;25(5).
• Ikenberry SO, Jue TL, Anderson MA, et al. Management of ingested foreign bodies and food impactions (ASGE). Gastrointest Endosc. 2011;73(6):1085-1091.
• Birk M, Bauerfeind P, Deprez PH, et al. Removal of foreign bodies in the upper GI tract in adults: ESGE clinical guideline. Endoscopy. 2016;48(5):489-496.
• Orsagh-Yentis D, McAdams RJ, Roberts KJ, et al. Foreign-body ingestions of young children treated in US emergency departments, 1995-2015. Pediatrics. 2019;143(5):e20181988.

© 2026 Kim Trinh, MD. All rights reserved. Educational only — synthesized from EB Medicine and primary literature. Synthetic examples. Not medical advice — apply local protocol and judgment.