10 free AEMT practice questions: Environmental Emergencies: Heat, Cold, and Submersion

Continue cooling until the temperature reaches 98.6°F: Chasing 98.6°F is the overshoot the guide warns about. Passing the stopping point produces hypothermia and shivering, and shivering makes heat.

Continue cooling until the patient is fully oriented: Mental status recovery lags behind the temperature and may not be complete before the hospital. Waiting for full orientation drives the temperature well past the endpoint.

Stop cooling and apply a blanket to bring the temperature up: Reaching 102.2°F is the target, not a problem to correct. Adding a blanket at this point traps heat in a patient whose thermoregulation is still not trustworthy.

The volume loss has deepened into a simple faint from heat: A faint from heat means the patient went down and came back with a clear head. This patient is agitated, cannot follow a command, and is at 105.0°F, which is a long way past a faint.

The sweat has dried in the breeze and the illness is unchanged: Dry skin in a patient at 105.0°F with new confusion is not an evaporation artifact. Explaining the dry skin away costs the patient the cooling.

A low blood glucose level has been added to the heat illness: A low blood glucose level is always worth checking in an agitated patient, but it does not account for a core temperature of 105.0°F and skin that has stopped sweating.

The pulse climbs by twenty while the patient stays alert: A pulse that climbs by twenty tracks volume loss and rising heat load, something you'd expect as heat exhaustion progresses, but the patient staying alert means the brain is still being perfused and cooled well enough. Tachycardia alone, without a mental status change, does not cross the line into heat stroke.

The patient reports a worse headache and more nausea: Worse headache and nausea are findings that already belong to heat exhaustion itself. Intensifying symptoms inside the same category tell you the patient needs closer monitoring and faster cooling, not that the diagnosis has changed.

The patient develops cramping in both thighs and calves: Bilateral thigh and calf cramping is classic for heat cramps, sodium and water loss from sweating with muscles still working normally. It sits at the mild end of the heat illness spectrum and does not signal the thermoregulatory failure that defines heat stroke.

Leave the wet layers on and wrap blankets over them for the ride: Blankets over soaked clothing insulate the water, not the patient. The wet layers keep conducting heat away and the patient keeps cooling under the blanket.

Sit the patient up and pull each layer off, then lay the patient flat: This is the fast instinct and it is the dangerous one. Sitting a patient at 83.1°F upright and hauling a jacket over the head is the jostling that can drop an irritable myocardium into ventricular fibrillation.

Stand the patient briefly so the soaked layers fall away cleanly: Standing this patient is worse than sitting up. The patient responds only to pain, cannot support any weight, and would need to be handled hard to be held upright at all.

Let the patient walk slowly with a crew member on each side: Two crew members steadying a walking patient is still a walking patient. The exertion and the upright position are the parts that carry the risk, and escorts do not remove either.

Have the patient stand and take a few steps to test the balance: A few test steps is the same exposure in a smaller dose. There is no threshold of steps below which an irritable cold myocardium is safe.

Have the patient walk while the crew watches the level of consciousness: Watching the level of consciousness is good practice, though it detects a problem rather than preventing one. Ventricular fibrillation is not something you catch early by watching a patient walk.

It burns cold skin that cannot feel the heat being applied: Burns from hot packs on skin that cannot feel heat are a real hazard, and it applies wherever you place a pack, trunk included. The 84.6°F core temperature is why the extremities specifically get skipped: the physiologic threat is afterdrop, not thermal injury, and that threat is unique to warming the limbs.

It uses up packs that the trunk will need later in transport: Pack supply never dictates where a treatment gets applied. The rule against extremity rewarming comes from what warming those limbs does to circulation and rhythm, not from how many packs are left for later.

It restarts shivering, and shivering raises oxygen demand: Shivering is heat production you want to protect in a hypothermic patient, not suppress, so raised oxygen demand from shivering is a heat stroke cooling concern, not a reason to avoid warming this 84.6°F patient's limbs.

Severe, because the temperature is well under normal: Severe hypothermia drops below roughly 82°F and brings unresponsiveness, muscle rigidity, and shivering that has stopped because the body can no longer generate heat. This child is alert, shivering hard, and sitting at 93.6°F, nowhere near that range.

Moderate, because the child is clumsy with the hands: Clumsy hands feel like a step toward moderate hypothermia, since fine motor control does fail as core temperature drops, but moderate hypothermia (82-90°F) shows shivering that has stopped and a falling level of consciousness, not the vigorous shivering and full alertness seen here at 93.6°F, so the clumsiness stays inside the mild picture.

No hypothermia, because the child is alert and talking: A temperature of 93.6°F is hypothermia by definition, whether or not the child stays alert and talkative; mentation only changes as the temperature drops further into the moderate and severe ranges. Calling this normal leaves the wet jeans on and lets the core temperature keep falling.

Remove the wet clothing and wrap the child in dry blankets: Getting the wet clothes off is real treatment, and every submersion patient is losing heat. It sits later in the sequence than a mouth that still has water in it.

Apply an NRB at a high concentration of oxygen: A saturation of 91% makes the mask tempting, and this child does need oxygen. The oxygen still comes second, because every breath has to travel through a mouth that has water and vomit sitting in it.

Hold manual spinal stabilization and fit a cervical collar: Spinal care is right when the mechanism is a dive or when nobody saw what happened. A child seen jumping in feet first buys nothing from the collar while the suction waits.

Swim out with a flotation device and tow the patient back to the dock: A flotation device makes swimming out feel controlled, and a trained water rescue swimmer might do exactly this. A patient in the water grabs and climbs, and the rescuer who has to fight that off is the next person under.

Enter the water with a rope around the waist and walk the patient in: The rope is the right tool and tying in is a good instinct, but the entry is still the problem. Cold water, an unseen drop off, and a frightened patient are all waiting for whoever steps in.

Wait for the water rescue team and keep talking to the patient meanwhile: Waiting is correct when nothing on scene can reach the patient. Twenty minutes of holding a piling is a long time for an 82-year-old patient when a pole and a rope are already in the crew's hands.

Add a second blanket over the wet clothing and turn the cabin heat up: Piling on a second blanket and running cabin heat feels right because ambient warming is a real part of treating hypothermia once someone is dry. The clothing here is still soaked, so both measures just warm the air around a wet layer that keeps pulling heat from the skin, treating the chill instead of its cause.

Leave the clothing in place and put warm packs over both arms and legs: Warm packs are a legitimate rewarming tool, but they belong over the trunk, axilla, and groin, not the extremities, and only after wet clothing comes off. With the clothing still in place, the packs spend their heat warming water instead of skin.

Dry the outside of the clothing with towels and keep the blanket on top: Toweling off the outside of the clothing leaves the wet layer against the skin untouched, so the conductive heat loss driving this patient's hypothermia continues exactly as before.