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Crush asphyxia and ride-on lawn mowers
Roger W Byard1, Neil Ei Langlois1
1School of Medicine, The University of Adelaide, Australia.
Medicine, Science, and the Law
|May 12, 2017
Summary
Ride-on lawn mower accidents can cause fatal crush asphyxia, particularly in older males. These rare incidents, often occurring domestically, highlight the dangers of mower rollovers and entrapment.
Area of Science:
- Forensic Pathology
- Accident Investigation
Background:
- Ride-on lawn mowers are common domestic tools.
- Previous literature on lawn mower-related fatalities is limited.
Observation:
- A 20-year review (1997-2016) at Forensic Science SA identified three deaths from crush asphyxia involving ride-on mowers.
- Cases involved older males (61, 78, 72 years) in domestic settings.
- Mechanisms included mower rollovers and entrapment between the mower and structures.
Findings:
- Autopsies consistently showed facial and thoracic petechial hemorrhages and chest markings.
- Evidence of rib fractures was noted in one case.
- These findings are characteristic of crush asphyxia due to severe thoracic compression.
Implications:
- Ride-on mower accidents represent a rare but serious cause of fatal crush asphyxia.
- Risk factors include mower rollovers and entrapment, particularly for elderly male users.
- Enhanced safety awareness and operator training are crucial for preventing such domestic fatalities.
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