Collapse at 1:30 pm: Sorting Heat Cramps, Heat Exhaustion and Heat Stroke
An inter-school football match in Assam kicks off at 1:30 pm in mid-June. Shade temperature is 37.5 °C and relative humidity is 80%. There are no scheduled water breaks. In the 55th minute a defender goes down with painful calf cramps; he is fully alert, sweating heavily and his skin is cool and wet. Ten minutes later another player feels dizzy and nauseated, is helped to the shade, drinks salted water and recovers within twenty minutes. In the 68th minute, Suman, a 15-year-old midfielder, collapses near the touchline after a sprint. He is confused, staggering and has vomited once. His skin is hot and dry, core temperature 40.9 °C, pulse 128 beats/min, respiratory rate 28/min and blood pressure 100/60 mmHg. The team's water bottles are empty. One bystander advises giving him salt water and waiting for the ambulance; another says to put him in the ice bath kept for the athletics team.
1. Classify the condition of each of the three players and justify your classification with the criteria you are using. Which one is the emergency, and why?
Read the worked answer
- First player - heat cramps. Painful involuntary contractions after heavy sweating and salt loss, with normal mental status and no systemic signs. Not an emergency; treat with rest in shade, oral fluids with electrolytes and gentle stretching.
- Second player - heat exhaustion. Heavy sweating, dizziness, nausea, weakness, core temperature usually between 37 and 40 °C, but no confusion. He responded to shade and oral fluids, which supports the classification. Not immediately life-threatening, but it can progress if he is sent back on.
- Suman - exertional heat stroke. The diagnostic criteria are core temperature above 40 °C (he is 40.9 °C) plus central nervous system dysfunction (confusion, staggering, vomiting). Tachycardia, tachypnoea and hypotension fit marked volume depletion. This is a medical emergency.
Why the distinction matters. The discriminator between heat exhaustion and heat stroke is not the thermometer alone but central nervous system involvement: any athlete with altered mental status after heat exposure should be managed as heat stroke until proven otherwise. Mortality rises sharply with the duration of hyperthermia, so the clock starts when he collapses, not when the ambulance arrives.
Two traps to name. Dry skin is not required - many heat stroke victims are still sweating, so wet skin must not reassure anyone. And a single recovered player (the second case) does not mean the conditions are safe; it is evidence that the environment is exceeding what these students can tolerate.
2. Set out the immediate management of Suman in priority order and justify each action, including why oral fluids and antipyretics are withheld.
Read the worked answer
- Call the ambulance and medical team immediately and clear the area - this is a time-critical emergency.
- Cool first, transport second. Start cooling on the spot. Cold-water immersion (about 10-15 °C) with the head supported and airway continuously monitored is the most effective method; stop at a core temperature of about 38.5-39 °C to avoid overshoot. If no tub is ready, use ice packs to neck, axillae and groin, cold wet towels, fanning and cold water spray.
- Airway, breathing, circulation. Monitor breathing and consciousness; place him in the recovery position if he vomits and his consciousness is impaired; watch for seizures.
- No oral fluids. He is confused, his swallow reflex is unreliable, and aspiration is a real risk. Rehydration should be intravenous, given by the medical team.
- No antipyretics. Paracetamol or aspirin act on the hypothalamic set point in fever; they do nothing for environmental hyperthermia and may add liver or kidney injury on top of heat damage.
- Do not wait. The bystander's 'salt water and wait' advice is appropriate only for cramps or exhaustion in a fully conscious athlete. For Suman it wastes the only intervention that changes outcome - rapid cooling.
Document the times: collapse, first cooling, temperature readings, and arrival of the ambulance. That record also protects the school.
3. As the physical education teacher responsible for the tournament, what prevention measures would you insist on, and what return-to-play advice would you give each of the three players?
Read the worked answer
Prevention at tournament level.
- Reschedule: no 1:30 pm kick-offs in June - play before 10 am or after 4 pm, and shorten halves or add an extra break when the heat index is high.
- Mandatory water breaks every 15-20 min plus unlimited water and electrolyte drink at a shaded bench; check bottles before kick-off.
- Heat acclimatisation of 10-14 days with gradually increasing exposure before the tournament, not on the day.
- Weigh players before and after; roughly 2% body-mass loss signals under-hydration.
- Light clothing, shaded rest areas, a trained first-aider at every match, and a written cooling plan with ice available on site.
- Educate coaches that substituting an affected player early is good practice, not weakness.
Return to play.
- Cramps: rehydrate with electrolytes, stretch, return when symptom-free.
- Heat exhaustion: rest in a cool place, rehydrate, and no return on the day; usually 24-48 h before full training, with medical review if symptoms recur.
- Heat stroke: no return on the day, medical clearance required, and a graded return over at least a week - rest, then light indoor work, then progressive training in cool conditions. Many guidelines advise a minimum of about seven days without exercise and a longer delay if there was organ involvement. Watch for residual confusion, fatigue or dark urine, which can signal kidney injury.