Cerebral emboli and serum S100beta during cardiac operations.

Journal Article

BACKGROUND: The glial protein S100beta has been used to estimate cerebral damage in a number of clinical settings. The purpose of this investigation was to determine the correlation between cerebral microemboli and S100beta levels during cardiac operations. METHODS: Transcranial Doppler ultrasonography was used to measure emboli in the right middle cerebral artery. Emboli counts (n = 111) were divided into five time periods: (1) incision to aortic cannulation; (2) aortic cannulation to cross-clamp onset; (3) cross-clamp onset to cross-clamp release; (4) cross-clamp release to decannulation; and (5) decannulation to chest closure. The level of S100beta (n = 156) was measured at baseline, at the end of cardiopulmonary bypass, then 150 and 270 minutes after cross-clamp release. RESULTS: The level of S100beta correlated with age, cardiopulmonary bypass time, cross-clamp time, and number of emboli at time period 2. Although cardiopulmonary bypass time was univariately associated with S100beta level, it became nonsignificant in a multivariable model that included age and cross-clamp time. CONCLUSIONS: The correlation of S100beta level with emboli measured during cannulation (time period 2) supports the hypothesis that cannulation is a high-risk time period for cerebral injury.

Full Text

Duke Authors

Cited Authors

  • Grocott, HP; Croughwell, ND; Amory, DW; White, WD; Kirchner, JL; Newman, MF

Published Date

  • June 1998

Published In

Volume / Issue

  • 65 / 6

Start / End Page

  • 1645 - 1649

PubMed ID

  • 9647074

International Standard Serial Number (ISSN)

  • 0003-4975

Language

  • eng

Conference Location

  • Netherlands