Study of distortion-product otoacoustic emissions during hypothermia in humans

Revista Brasileira de Otorrinolaringologia

USP¹  Cruz, Oswaldo Laércio Mendonça¹  Borin, Andrei¹  UNIFESP¹ 

关键词: extra-corporeal circulation;    hair-cells;    cochlea;    otoacoustic emissions;    hypothermia.;   

DOI  :  10.1590/S0034-72992008000300015

学科分类：医学（综合）

来源: Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial

【 摘 要 】

AIM: To evaluate the function of cochlear outer hair-cells under the influence of extra-corporeal circulation and moderate hypothermia during cardiac surgery. STUDY DESIGN: Prospective clinical study. METHODS: Distortion-product otoacoustic emissions (DPOAE) were registered before surgery, immediately after general anesthesia induction, during extra-corporeal circulation with moderate hypothermia and after the surgical procedure. Results: Comparison of response-amplitudes before and after surgery and before and after general anesthesia initiation did not demonstrate statistical difference. Comparison of amplitudes before and after extra-corporeal circulation with moderate hypothermia demonstrated a statistically significant decrease in responses amplitudes during hypothermia. CONCLUSIONS: The amplitudes of DPOAE decreased during moderate hypothermia induced during extra-corporeal circulation.

【 授权许可】

Unknown