A Dangerous Hiding Spot: The Unrecognized Danger Posed by Child-Sized Helium Balloons.

Anticipatory guidance on balloons typically highlights the danger of choking on uninflated balloon fragments. One type of balloon injury that is not widely discussed is suffocation due to crawling inside a large foil helium-containing balloon. A six-year-old female presented to a community hospital emergency department (ED) after being found on the floor inside a 50-inch foil balloon in the shape of the number "7." The patient's mother found her unconscious, limp, and with no spontaneous respirations. She initiated chest compressions before emergency medical services arrived. After evaluation and treatment in the community hospital ED, the patient was transferred to a tertiary children's hospital for observation and frequent neurological checks. She returned fully to baseline mental status 12 hours after the injury and was discharged home later that same day. This case highlights that oversized balloons can be enticing but hazardous hiding spots for children and discusses several possible mechanisms of injury. Parents and pediatricians should be aware of the dangers of suffocation in these cases.