Is the Decrease in the Bispectral Index Correlated With a Decrease in Cardiac Output During the Induction of Anaesthesia?

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

45 participants

Study Classification

OBSERVATIONAL

Study Start Date

2015-10-31

Study Completion Date

2017-05-31

Brief Summary

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Monitoring the bispectral index (BIS) as a peri-operative hemodynamic tool appears to be justified by the agreement between various clinical situations in which BIS monitoring appears to be of value: the prognosis in traumatic head injury, the diagnosis of brain death , and the diagnosis of amniotic fluid embolism. The current controversy concerning the "triple low" state reinforces the need for an accurate study in this field. Furthermore, the recent review by Bidd argues in this sense.

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Detailed Description

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Conditions

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Thoracic Surgery

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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patients

patients presenting an indication for general anaesthesia during elective cardiac surgery and being monitored for sedation depth

* recording of cardiac output
* other parameters

recording of cardiac output

Intervention Type DEVICE

other parameters

Intervention Type DEVICE

BIS (bispectral index ), PI (perfusion index ), etCO2 (end-tidal carbon dioxide ), and brain NIRS (near-infrared spectroscopy)

Interventions

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recording of cardiac output

Intervention Type DEVICE

other parameters

BIS (bispectral index ), PI (perfusion index ), etCO2 (end-tidal carbon dioxide ), and brain NIRS (near-infrared spectroscopy)

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Adult (over-18) patients presenting an indication for general anaesthesia during elective cardiac surgery and being monitored for sedation depth
* Good echogenicity
* Social security coverage

Exclusion Criteria

* Pregnancy
* Subjects with black skin (a known technical limitation of plethysmography)
* Cardiac arrhythmia
* Sepsis
* Poor echogenicity
* Legal guardianship or incarceration
* Complications of anaesthesia during induction (anaphylactic shock, cardiac arrest, arrhythmia, or intubation not possible)

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No