What is the temperature of cold stress?

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

Cold stress, or mild hypothermia, is defined by a core body temperature range of 36.0°C to 36.4°C.
This state triggers physiological responses to generate heat, such as increasing metabolic rate and oxygen consumption.
It is the first stage of hypothermia, indicating that the infant is losing heat faster than it can be produced.
Prompt intervention is required to prevent the temperature from dropping further into moderate or severe hypothermia.

Option A: The range 32-36°C is too broad. It includes the upper end of moderate hypothermia (32.0–35.9°C) and the entire range of cold stress.
Option C: A temperature less than 32°C signifies severe hypothermia, a life-threatening condition requiring immediate and intensive medical intervention.
Option D: The range 36.5-37.5°C is the definition of normothermia, which is the normal, healthy body temperature range for a newborn.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition and temperature range for neonatal cold stress as background academic context rather than a clinical decision trigger.
Nurses must perform regular temperature checks on all newborns, especially those at high risk (e.g., premature, low birth weight), to detect cold stress early.
Immediate nursing actions for cold stress include skin-to-skin contact (Kangaroo Mother Care), applying a cap and warm blankets, ensuring the room is warm, and removing any wet clothing.
Failure to manage cold stress can lead to serious metabolic complications, including hypoglycemia and metabolic acidosis, which can compromise the newborn's health.

How to Approach the Question

First, identify the key term in the question: 'cold stress'.
This is a factual recall question that requires knowledge of specific physiological parameters in neonates.
Recall the standard temperature classifications for newborns: normothermia, cold stress (mild hypothermia), moderate hypothermia, and severe hypothermia.
Compare the given options to the memorized ranges.
Select the option that precisely matches the definition of cold stress, which is 36.0-36.4°C.

Concept Tested & Keywords

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E6 Nelson Textbook of Pediatrics(2024) — Volume 1 pp. 703-705, 684-686

Practise the full NORCET 2 - 2021 (shift-1)

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