Bispectral Index (BIS®)

Philips Bispectral Index (BIS®)

Monitoring level of consciousness with the compact BISx Power Link™

Philips Bispectral Index (BIS®) measurement uses Aspect Medical Systems’ XP platform technology. It provides depth of consciousness and sedation monitoring for use in the OR, ICU, and other clinical settings.
 

 

 

 

 

The Philips BIS module provides numerics, graphic trends, and high-resolution trends for the following values:

  • Bispectral Index
  • Electromyographic strength (EMG)
  • Signal quality indicator
  • Suppression ratio
  • EEG waveform
  • Total power
  • Spectral Edge Frequency (SEF)
     

BIS measurements are resistant to artifact from electrocautery devices. The algorithm detects and filters interference from EMG.

Benefits for anesthesia and critical care
BIS measurements can help clinicians formulate the precise type and optimal dosages of anesthetic or sedative medication for each patient.

BIS monitoring is most widely used in the OR to help:

  • Regulate anesthetic drug use
  • Decrease the incidence of post operative side-effects such as nausea and vomiting
  • Reduce length of stay in the PACU (recovery room)
  • Prevent intraoperative awareness
     

BIS monitoring can also be useful during outpatient surgery

In the ICU, BIS monitoring has been shown to reduce recall of unpleasant experiences and provide objective sedation assessment during:

  • Mechanical ventilation
  • Neuromuscular blockade
  • Barbiturate coma
  • Bedside procedures
     

Well managed sedation levels in the ICU can also aid in ventilator weaning.
 

Greater awareness of patient-specific reactions to anesthesia and sedation
Patients respond differently to anesthesia, and BIS monitoring can be particularly valuable in patients whose responses are least predictable, including:

  • Geriatric and pediatric patients
  • Frail patients
  • Patients undergoing lengthy surgeries
  • Patients with conditions known to affect responsiveness to anesthesia

 

 

References
Arbour R. Continuous nervous system monitoring, EEG, the bispectral index and neuromuscular transmission. AACN Clin Issues. 2003 May; 14(2): 185-207.

Olson DM, Chioffi SM, Macy GE,Meek LG and Cook HA. Potential benefits of bispectral index monitoring in critical care. Crit Care Nurse. 2003 Aug; 23(4): 45-51.

Crain N, Slonim A, and Pollack MM. Assessing sedation in the pediatric intensive care unit by using BIS and COMFORT scale. Pediatr Crit Care Med. 2002 Jan; 3(1): 1-14.
McGaffigan P. Advancing sedation assessment to promote patient comfort. Crit Care Nurse. 2002 Feb;Suppl:29-36; quiz 37-8. Review.

 

Bispectral Index, BIS, BISx, and Aspect are trademarks or registered trademarks of Aspect Medical Systems.

Aspect BISx Power Link: 185-0145-PH

 

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