thermoregulation
Pronunciation: THER-mo-reg-you-LAY-shun
The process by which the body maintains its core internal temperature within a narrow range despite external temperature variations.
Full Definition
Thermoregulation is a critical physiological process that is particularly challenging for premature and critically ill newborns. Newborns, especially those born prematurely, have immature thermoregulatory mechanisms and are at high risk for both hypothermia and hyperthermia. Factors affecting neonatal thermoregulation include large surface area-to-body weight ratio, minimal subcutaneous fat, immature skin, and inability to shiver. In the NICU, thermoregulation is supported through incubators, radiant warmers, appropriate clothing, and careful environmental temperature control. Maintaining normothermia is essential for optimal metabolic function and survival.
Usage
Usage note: Distinguish from 'thermogenesis' which specifically refers to heat production mechanisms.
In Context
- "The premature infant's immature thermoregulation required careful temperature monitoring and incubator support." — Nursing assessment
- "Effective thermoregulation strategies are essential for reducing energy expenditure in critically ill newborns." — Clinical guideline