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Dad Dies in Ironman After Heat Stroke and Cardiac Arrest
19 Mar
Summary
- A father-of-one died from exertional heat stroke and cardiac arrest during an Ironman.
- Concerns were raised about the delay in administering first aid after the rescue.
- The inquest heard the competitor's core body temperature was dangerously high.

Sam Buchan, a 31-year-old engineer from Aberdeen, tragically passed away during the Ironman 70.3 race in Swansea last July. He was competing in the swimming leg when he experienced difficulties approximately 0.6 miles into the event.
Rescued from the water, Mr. Buchan received mouth-to-mouth resuscitation and was transported to Morriston Hospital. Sadly, he died on July 16, 2025, after life support was withdrawn. The post-mortem cited anoxic ischemic encephalopathy, cardiac arrest, and exertional heat stroke as causes of death.
His wife highlighted concerns about the delay in first aid, estimating it took 10 to 30 minutes to retrieve him from the water and commence chest compressions. She believes this delay critically impacted his survival, as his brain was starved of oxygen.
The inquest heard evidence suggesting it took approximately three-and-a-half minutes from Mr. Buchan being seen in distress to reaching the medical station. The medical team noted his core body temperature was 40.4C upon arrival, confirming severe exertional heat illness.
Mrs. Buchan hopes that improved protocols and safety equipment will be implemented to prevent similar tragedies, so no other family endures such loss. Mr. Buchan left behind a two-year-old daughter.




