| Ischemic changes in evoked spinal cord potentials during profound hypothermic circulatory arrest in thoracic aortic surgery. | |
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MedLine Citation:
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PMID: 15815841 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: We examined the changes in evoked spinal cord potentials (ESCP) during profound hypothermic circulatory arrest to estimate the safe ischemic time. METHODS: We monitored ESCPs during surgery for descending thoracic or thoracoabdominal aneurysms in five patients. Evoked spinal cord potential recordings were obtained before cooling (baseline), then every few minutes during circulatory arrest, and at the end of the operation. RESULTS: After circulatory arrest, the amplitude of ESCPs decreased with time. We calculated the simple linear regression between the amplitude of ESCPs and the circulatory arrest time by the least-squares method, and found a highly linear relationship between amplitude and arrest time in all five patients. The time until disappearance of ESCPs was estimated as 50.7 +/- 20.4 min (95% level of confidence). CONCLUSION: When an ESCP disappeared, ischemic spinal cord injury had occurred. This demonstrates the potential value of estimating the time of disappearance of ESCPs to prevent ischemic spinal cord injury during descending thoracic aortic surgery. |
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Authors:
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Keiju Kotoh; Kazuaki Fukahara; Akio Yamashita; Kouiti Seki; Takuro Misaki |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Surgery today Volume: 35 ISSN: 0941-1291 ISO Abbreviation: Surg. Today Publication Date: 2005 |
Date Detail:
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Created Date: 2005-04-07 Completed Date: 2005-07-21 Revised Date: 2006-08-03 |
Medline Journal Info:
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Nlm Unique ID: 9204360 Medline TA: Surg Today Country: Japan |
Other Details:
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Languages: eng Pagination: 271-4 Citation Subset: IM |
Affiliation:
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Department of Surgery, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama, 930-0194, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aortic Aneurysm / surgery* Evoked Potentials, Somatosensory / physiology* Female Heart Arrest, Induced / adverse effects* Humans Hypothermia, Induced / adverse effects* Intraoperative Complications / diagnosis, etiology, physiopathology*, prevention & control Ischemia / diagnosis, etiology, physiopathology*, prevention & control Male Middle Aged Monitoring, Intraoperative Spinal Cord / blood supply*, physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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