Document Detail

Cerebral microemboli during minimally invasive and conventional mitral valve operations.
MedLine Citation:
PMID:  11016385     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Intraoperative cerebral microembolism may cause postoperative neurologic damage. The aim of this study was to determine the frequency of cerebral microembolic signals (MES) during minimally invasive surgery (MIS) and conventional (conv.) mitral valve operations and to determine the association of MES with various stages of the operation. METHODS: Intraoperative computer-aided transcranial Doppler measurements were performed to detect cerebral microemboli in 21 patients undergoing MIS and in 14 patients undergoing conv. mitral valve operation. We calculated the mean embolic rate for three time periods: P1, start of the operation until aortic clamping; P2, aortic clamping until clamp removal; and P3, declamping until end of surgery. RESULTS: There was no significant difference in the total number of detected cerebral MES between both patient groups (MIS 1,014+/-753, conv. 937+/-519; NS). In both groups, the highest number of MES were detected during the third time period when the heart regained effective ejection (MIS 875+/-746, conv. 680+/-462; p > 0.5). CONCLUSIONS: Transcranial Doppler was useful to detect cerebral microemboli in MIS and conv. mitral valve operation. We found no increased risk of cerebral microembolism during the minimally invasive method compared with the conventional technique.
F Schneider; J F Onnasch; V Falk; T Walther; R Autschbach; F W Mohr
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of thoracic surgery     Volume:  70     ISSN:  0003-4975     ISO Abbreviation:  Ann. Thorac. Surg.     Publication Date:  2000 Sep 
Date Detail:
Created Date:  2000-10-17     Completed Date:  2000-10-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  15030100R     Medline TA:  Ann Thorac Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1094-7     Citation Subset:  AIM; IM    
Department of Cardiac Surgery, Heartcenter, University of Leipzig, Germany.
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MeSH Terms
Cardiopulmonary Bypass
Heart Valve Prosthesis Implantation / adverse effects*
Intracranial Embolism / etiology*,  ultrasonography
Intraoperative Complications
Middle Aged
Mitral Valve / surgery*
Surgical Procedures, Minimally Invasive / adverse effects*
Ultrasonography, Doppler, Transcranial

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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