Boy survives 147 minutes under ice, setting hypothermia record

An 8-year-old boy fell through pond ice, stayed submerged for at least 147 minutes, and lived after his body cooled to a nadir peripheral temperature of 7 °C, or 45 °F. The case, now detailed in JACC: Case Reports, is being treated as a hard reminder for cold-water communities: extreme cold can buy time, but only in the rarest circumstances and only when the rescue chain is fast, specialized, and aggressive.

The report, by Carlo R. Bartoli, Ronald Wong, Vanessa M. Mazandi, Alexander S. Fairman and Frank A. Maffei, describes what the authors say is the longest submersion time and lowest nadir body temperature ever reported for a surviving patient. It pushes well beyond previously published survival after ice-water submersion of up to 83 minutes and beyond prior reported accidental hypothermia survival as low as 11.8 °C, or 53 °F. After retrieval, the child was rewarmed with extracorporeal membrane oxygenation, then spent a prolonged period in the hospital and in neurorehabilitation before recovering.

For anyone who uses ice baths, winter swims, or other cold-exposure routines, the lesson is not that cold is protective. It is that cold-water physiology can sometimes slow metabolism enough to permit survival from prolonged asystolic circulatory arrest, but those outcomes are exceptional and depend on the right rescue and rewarming pathway. This was not a solo recovery, not a breath-hold flex, and not a test of toughness. It was a high-acuity medical event that required ECMO.

The stakes are not abstract. The World Health Organization says drowning causes around 300,000 deaths worldwide each year, is the fourth leading cause of death for children ages 1 to 4, and the third leading cause for ages 5 to 14. The organization also says 92% of drowning deaths occur in low- and middle-income countries. In the United States, the Centers for Disease Control and Prevention says more children ages 1 to 4 die from drowning than from any other cause, and drowning is the second leading cause of unintentional injury death for children ages 5 to 14.

The case lands alongside newer guidance that treats drowning and hypothermia as special circumstances. The American Heart Association and American Academy of Pediatrics updated drowning resuscitation guidance in 2024, while AHA 2025 CPR/ECC materials and European Resuscitation Council guidance emphasize prolonged resuscitation efforts for hypothermic arrest and the need to normalize temperature before stopping attempts. The American College of Cardiology later recognized the case as an honorable mention in its 2026 Young Author Achievement Awards, with Frank A. Maffei listed as mentor. For cold-water athletes and ice bath regulars, the headline number is 147 minutes, but the real story is how narrow the path to survival was.