Entropy monitoring

Neuromonitoring

Published in Hemanshu Prabhakar, Charu Mahajan, Indu Kapoor, Manual of Neuroanesthesia, 2017

Compressed arrays are used as simple noninvasive means to assess awareness and depth during anesthesia (Bispectral Index™ [BIS™]). They use the power spectrum and bispectrum from one EEG channel to calculate a number, with numbers close to 100 indicating completely awake and below 70 as unconscious. Increasing synchrony indicates deepening anesthesia. Entropy monitoring is another method of assessing anesthetic depth. It relies on a method of assessing the degree of irregularities in the EEG. The principle behind this theory is that the irregularity within an EEG signal decreases with increasing brain levels of anesthetic drugs assigning an entropy score.

Erector spinae plane block combined with general anaesthesia versus conventional general anaesthesia in lumbar spine surgery

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Journal Information

Published in Egyptian Journal of Anaesthesia, 2020

Ezzzt M. Siam, Doaa M. Abo Aliaa, Sally Elmedany, Mohamed E. Abdelaa

All patients included in this study, were assessed thoroughly by detailed medical and surgical history takin, complete clinical examination, routine laboratory investigations (complete blood picture, renal function tests, coagulation profile and fasting blood sugar). All patients were informed about the technique applied and any possible complications. On arrival in the operation room: a multi-channel monitor (GE Healthcare, Helsinki, Finland) was attached to the patient to display entropy monitoring, continuous ECG monitoring, heart rate (HR), Mean arterial blood pressure (MAP), arterial oxygen saturation (SaO2%) and anaesthetic gas analysis.

Entropy monitoring

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Neuromonitoring

Erector spinae plane block combined with general anaesthesia versus conventional general anaesthesia in lumbar spine surgery