Effect of temperature and cardiopulmonary bypass on the auditory evoked response
| Autor: | D.A. Hett, T R Abbott, S N Pilkington, D.C. Smith |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Male
medicine.medical_specialty Time Factors Core temperature Body Temperature law.invention Hypothermia Induced law Degree Celsius Evoked Potentials Auditory Brain Stem Reaction Time Cardiopulmonary bypass medicine Humans Latency (engineering) Child Aged Cardiopulmonary Bypass Adult patients business.industry Middle Aged Cardiac surgery Anesthesiology and Pain Medicine Moderate hypothermia Anesthesia Circulatory system Evoked Potentials Auditory Female business |
| Zdroj: | British Journal of Anaesthesia. 75:293-296 |
| ISSN: | 0007-0912 |
| DOI: | 10.1093/bja/75.3.293 |
| Popis: | We have recorded auditory evoked potentials before and during cardiopulmonary bypass in 10 adult patients undergoing cardiac surgery under moderate hypothermia to 27-28 degrees C. The immediate effect of bypass was a small decrease in latency and increase in amplitude of the early cortical response. We also studied two adults and two children during profound hypothermia with circulatory arrest during cardiopulmonary bypass. Reduction in core temperature to 25 degrees C resulted in an increase in latency and amplitude of the brain stem responses; below this temperature the amplitude decreased but latency continued to increase until the auditory evoked response trace became completely flat between 21 and 19 degrees C. These changes were reversible on rewarming. |
| Databáze: | OpenAIRE |
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