A heat stroke occurs when body temperature is:

Appeared in: RIMS Nursing Officer - 2022

Explanation

Heat stroke is defined as a core body temperature that rises above 104°F (40°C).
This condition represents a failure of the body's heat-regulating mechanisms.
It is a severe, life-threatening medical emergency characterized by central nervous system dysfunction (e.g., confusion, seizures, coma) and potential multi-organ failure.
Unlike heat exhaustion, which is a precursor, heat stroke involves a complete breakdown of thermoregulation.

Option A: A temperature range of 98.6-100°F is considered normal to a low-grade fever. It does not indicate a heat-related illness.
Option B: A body temperature of 100-102°F indicates a mild to moderate fever or the lower end of heat exhaustion, not heat stroke.
Option C: This temperature range (102-104°F) is characteristic of heat exhaustion, a less severe heat-related illness. While serious, it has not yet reached the critical threshold for heat stroke.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition and temperature threshold for heat stroke as background academic context rather than a clinical decision trigger.
Rapidly identifying heat stroke is a critical nursing skill, as mortality is directly related to the duration of hyperthermia. Immediate cooling can be life-saving.
Nurses must educate at-risk populations (e.g., elderly, athletes, outdoor workers) on prevention strategies like hydration, avoiding midday sun, and wearing light clothing.
What if? If a patient with suspected heat stroke begins to shiver during cooling measures, the nurse must intervene. Shivering generates heat and counteracts cooling efforts. The provider should be notified, as medications like benzodiazepines may be needed to stop the shivering.

How to Approach the Question

First, identify the keywords in the question: 'heat stroke' and 'body temperature'.
This is a factual recall question. Access your knowledge about the definitions of different heat-related illnesses.
Recall the specific temperature threshold that defines heat stroke.
Evaluate each option against this critical value.
Eliminate the options representing normal temperature (98.6-100°F) and the range for heat exhaustion (100-104°F).
Select the option that correctly identifies the temperature for heat stroke, which is above 104°F (40°C).

Concept Tested & Keywords

Q9-XVYKxrQZCNfltF1DGzD

E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart B (pp 233-449 of 464) p. 65-67

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 3 p. 122-124

E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 2130-2132

Practise the full RIMS Nursing Officer - 2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.