Core T < 36 degrees C

Decrese cerebral metabolism 6-7% per degree C

Tympanic Membrane

Nasopharynx

Esophagus- Dianne fav/mostaccurate to her

Bladder

(can also use blood through Swann)

Range in between shivering/vasoconstriction and sweating

Range where nothing happens

Normal Adult range is 0.2 degrees C 

Anesthesia widens range to (0.4 or 4?) 

Shunts blood away from the fingers, tose, nose to reduce heat loss 

Halves heat loss by decreasing peripheral blood flow

Adrenergic receptors does this 

Mitochondria in brown fat of neonates on their neck,back, viscera, and great vessels, increase metabolism and generates heat

Metabolism of brown fat is initiated by Beta3 adrenergic receptors 

Temp decline  of 0.5-1 C per hour for the next 2-3 hours

Cutaneous heat loss exceed metabolic production

Account for 90% of heat loss in the OR

Largest source of heat loss normally- 60% 

30% of heat loss

Second most common way heat loss in the OR 

12.5 mg IV Demerol

Clonadine

Precedex

Increases blood loss by 30%

Reduces MAC 5% per degree in core body temp 

Reduces heat loss by around 30%

Only last for about 10 mins