1. KIN 188 – Prevention and Care of Athletic Injuries Environmental Conditions

7. Measuring Heat-Stress Index Consider rescheduling or delaying the event until safer conditions prevail; if the event must take place, be on high alert Extreme or hazardous Black >82 o F Everyone should be aware of injury potential; individuals at risk should not compete High Red 73-82 o F Risk level increases as event progresses through the day Moderate Yellow 65-73 o F Risk low but still exists on the basis of risk factors Low Green 65 o F Comments Level of Risk Flag Color WBGT

26. Hypothermia *Note: Rough handling can trigger cardiac arrest at or below 32ºC (90ºF). Cardiac and respiratory centers fail. Edema and hemorrhage occur in lungs, leading to death <78 <25.6 Unconsciousness. Reflexes cease to function, and heartbeat is erratic 78–80 25.6–26.7 Loss of awareness of surroundings, irrational thinking, drifting into a stuporous state. Rigidity continues, and heart and respiration rates slow. Cardiac arrhythmias may be present 81–85 27.2–29.4 Shivering decreases and is replaced by muscular rigidity with jerky erratic movements. Thinking is clouded, and amnesia may be present* 86–90 30–32.2 Persistent violent shivering, difficulty with speech if conscious 91–95 32.8–35 Intense involuntary shivering 96–99 35.5–37.2 Signs and Symptoms (ºF) (ºC)