Define "Passive Rewarming" and "Active Rewarming" and provide an example of each. Describe the clinical difference between Heat Exhaustion and Heat Stroke. Why is Heat Stroke a true medical emergency?

Here are the answers to the questions:

11. Define "Passive Rewarming" and "Active Rewarming." Provide one example of each.

• Passive Rewarming: Allowing the patient's body to rewarm itself by preventing further heat loss.
  • Example: Removing wet clothing and covering the patient with dry blankets in a warm environment.
• Active Rewarming: Directly applying external or internal heat to the patient to raise their core body temperature.
  • Example: Administering warmed intravenous fluids or applying heat packs to the torso, armpits, and groin.

12. Describe the clinical difference between Heat Exhaustion and Heat Stroke. Why is Heat Stroke a true medical emergency?

• Heat Exhaustion: Characterized by a core body temperature typically below $40^\circ\text{C}$ ($104^\circ\text{F}$), profuse sweating (cool, clammy skin), and symptoms like weakness, dizziness, nausea, and headache, but without significant central nervous system (CNS) dysfunction.
• Heat Stroke: A life-threatening condition with a core body temperature typically above $40^\circ\text{C}$ ($104^\circ\text{F}$), hot and often dry skin (though it can be moist), and significant CNS dysfunction such as confusion, altered mental status, seizures, or coma.
• Why Heat Stroke is a true medical emergency: Heat stroke is an emergency because the extremely high body temperature directly damages cells and organs, leading to rapid multi-organ failure (brain, kidneys, liver, heart) and can quickly result in permanent disability or death if not treated immediately with aggressive cooling.

13. List the four steps of the "Reach-Throw-Row-Go" water rescue sequence. Explain why an EMT should rarely "Go."
The four steps of the "Reach-Throw-Row-Go" water rescue sequence are:

1. Reach: Extend an object (e.g., a pole, branch, or arm) to the victim from a safe position on shore.
2. Throw: Throw a buoyant object (e.g., a life ring, rescue bag, or anything that floats) to the victim.
3. Row: Use a boat or other watercraft to reach the victim.
4. Go: Enter the water to rescue the victim.

• Why an EMT should rarely "Go": An EMT should rarely "Go" (enter the water) because it places the rescuer at significant risk of becoming a victim themselves, especially if they are not trained in water rescue, lack proper equipment, or are unaware of potential hazards in the water. Rescuer safety is paramount.

14. Explain the pathophysiology of Decompression Sickness ("The Bends").
Decompression sickness (DCS), or "the bends," occurs when a diver ascends too quickly from a high-pressure environment (like deep underwater) to a lower-pressure environment. During descent, inert gases, primarily nitrogen, dissolve into the body's tissues and blood under increased pressure. If ascent is too rapid, these dissolved gases come out of solution too quickly, forming bubbles in the blood vessels and tissues. These bubbles can obstruct blood flow, damage tissues, and trigger inflammatory responses, leading to symptoms such as joint pain, skin rash, neurological deficits, and respiratory problems.

15. You are dispatched to a lightning strike victim. You find three patients. One is conscious and screaming, one is in respiratory arrest, and one appears dead. Whom do you treat first and why?
You should treat the patient who is in respiratory arrest first.

• Why: Lightning strike victims often experience immediate cardiac or respiratory arrest. Those who are conscious and screaming are likely to survive the initial strike. Those who appear dead may be in cardiac arrest but are often salvageable with immediate cardiopulmonary resuscitation (CPR). This is an example of "reverse triage" for lightning strike victims, where those who appear most severely injured (respiratory/cardiac arrest) are prioritized because they have the highest potential for successful resuscitation if treated promptly.

16. Identify three common complications of a near-drowning incident that occur in the post-resuscitation phase.
Three common complications of a near-drowning incident in the post-resuscitation phase are:

1. Acute Respiratory Distress Syndrome (ARDS): Caused by aspiration of water, leading to lung inflammation and impaired gas exchange.
2. Cerebral Edema/Neurological Damage: Resulting from prolonged hypoxia (lack of oxygen) to the brain during the drowning event.
3. Pneumonia: Due to aspiration of water, bacteria, or other contaminants into the lungs, leading to infection.