Changes in density spectral array of bilateral BIS during carotid external compression in cardiac surgery

  • José A. Sastre
  • T. López
  • Leyre Reta
Letter to the Editor


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of AnesthesiologyComplejo Asistencial Universitario de SalamancaSalamancaSpain
  2. 2.Department of AnesthesiologyNuestra Señora de Sonsoles HospitalÁvilaSpain
  3. 3.Salamanca University HospitalSalamancaSpain

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