TY - JOUR
T1 - Depression of the guinea pig cochlear temperature caused by anesthesia and ventral-approach ear surgery
AU - Nuttall, Alfred L.
AU - La Rouere, Michael J.
PY - 1980/8
Y1 - 1980/8
N2 - A chronic implant of a thermocouple, on the round window membrane of the guinea pig cochlea, was used to determine the cochlear temperature in awake, anesthetized, and surgically dissected animals. The normal cochlear temperature was equal to the core (rectal) temperature of the guinea pig (38.5 °C) and, in the intact animal, exactly tracks changes in core temperature at least down to the 33 °C level tested here. Ventral surgery to expose the cochlea results in a decrease, to a low value of 31 °C, in cochlear temperature because of the removal of tissue mass overlying the auditory bulla. Effective use of a heating pad and blanket cover, over the body of the guinea pig, will regulate core temperature but the exposed cochlea will always have a lower value than either the temperature measured rectally or in the orophraynx.
AB - A chronic implant of a thermocouple, on the round window membrane of the guinea pig cochlea, was used to determine the cochlear temperature in awake, anesthetized, and surgically dissected animals. The normal cochlear temperature was equal to the core (rectal) temperature of the guinea pig (38.5 °C) and, in the intact animal, exactly tracks changes in core temperature at least down to the 33 °C level tested here. Ventral surgery to expose the cochlea results in a decrease, to a low value of 31 °C, in cochlear temperature because of the removal of tissue mass overlying the auditory bulla. Effective use of a heating pad and blanket cover, over the body of the guinea pig, will regulate core temperature but the exposed cochlea will always have a lower value than either the temperature measured rectally or in the orophraynx.
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U2 - 10.1121/1.384748
DO - 10.1121/1.384748
M3 - Article
C2 - 7419809
AN - SCOPUS:0019208890
VL - 68
SP - 489
EP - 493
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
SN - 0001-4966
IS - 2
ER -