What are the primary features triggered by rapid skin temperature drop during CSR?
Answer
Uncontrolled hyperventilation and increased heart rate/blood pressure
When the body experiences a rapid drop in skin temperature due to unexpected immersion, the nervous system activates a survival cascade that manifests as the Cold Shock Response. The two defining physiological features of this response are immediate, uncontrolled hyperventilation—often experienced as the hazardous gasp reflex—and a significant surge in both heart rate and blood pressure. This cardiovascular stress places immense strain on the heart, which can be fatal to susceptible individuals. These violent, involuntary changes are what distinguish the initial shock phase from the subsequent stages of cold water survival.
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