The human body has evolved to work within a narrow, carefully maintained, core temperature range. As hypothermia develops, many organ systems stop working properly. The physiological effects of hypothermia mean that the management of cardiac arrest requires an altered approach. Remember, too, that hypothermia can be protective – greatly prolonged resuscitation efforts may be justified.
The image shows classifications of hypothermia. Hypothermia is defined as a core temperature below 35 °C, with mild hypothermia classified as 32-35°C, moderate 30-32°C and severe disease below 30°C. It is frequently associated with submersion injury and drowning (see forthcoming session).
The treatment of hypothermia depends on symptoms and temperature.