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Urinary catecholamines in hyperthermia-related deaths.

M L Kortelainen1, P Huttunen, T Lapinlampi

  • 1Department of Forensic Medicine, University of Oulu, Finland.

Forensic Science International
|November 1, 1990
PubMed
Summary

Hyperthermia deaths show elevated urinary noradrenaline (NA) due to heat stress and ethanol, indicating increased sympathetic nervous system activity. This contrasts with hypothermia, where both NA and adrenaline (A) are typically raised.

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Area of Science:

  • Forensic Toxicology
  • Environmental Health
  • Physiology

Background:

  • Hyperthermia fatalities are often associated with environmental heat stress.
  • The role of the sympathetic nervous system and its catecholamine metabolites in hyperthermia is not fully understood.
  • Ethanol consumption is a common factor in heat-related deaths.

Purpose of the Study:

  • To investigate urinary catecholamine levels in hyperthermia-related deaths.
  • To compare these levels with a control group experiencing rapid, non-thermal deaths.
  • To explore the influence of ethanol on catecholamine excretion in hyperthermia.

Main Methods:

  • Analysis of urinary noradrenaline (NA), adrenaline (A), and dopamine (DA) concentrations.
  • Comparison between five hyperthermia fatalities and a control group.

Related Experiment Videos

  • Assessment of ethanol influence in hyperthermia cases.

    • Main Results:

    • Elevated urinary NA concentrations were observed in hyperthermia cases (172.1 +/- 119.4 ng/ml) compared to controls (43.7 +/- 26.1 ng/ml).
    • Urinary A and DA concentrations did not significantly differ between groups.
    • Ethanol was present in all but one hyperthermia victim.

    Conclusions:

    • Elevated urinary NA in hyperthermia deaths, particularly with ethanol co-consumption, suggests heightened sympathetic nervous system activity.
    • A profile of high urinary NA with low A may characterize hyperthermia fatalities.
    • This contrasts with hypothermia, where both NA and A are generally elevated.