Normally, axillary temperature is 36-37° C.
preterm or SGA is poor in brown adipose tissue, which is one of the most important elements of temperature regulation.
The most important heat loss way is evaporation. Therefore, the most important stage of resuscitation is drying the baby.
The most common cause of hyperthermia:
the environment is too hot
overdress
incubator or phototherapy heat
exposed to sunlight
Insufficient ability to lose heat by sweating
dehydration due to lack of breast milk
As a result of cold damage:
metabolic acidosis
hypoxemia
hypoglycemia
renal water electrolyte loss.