BIS™ Brain Monitoring

BIS™ monitoring provides an objective measure of the patient’s depth of consciousness, and combined with your experience, enables you to confidently monitor and tailor safe, optimal anaesthesia for each patient.

Studies have shown reductions in the use of anaesthetic drugs by as much as 50% in patients monitored with BIS™ technology:

• BIS™ monitoring enabled a 50% reduction in propofol administration during hypothermic cardiopulmonary bypass([FOOTNOTE=Chiu CL, Ong G, Majid AA. Impact of bispectral index monitoring on propofol administration in patients undergoing cardiopulmonary bypass. Anaesthesia Intensive Care. 2007;35:342-347.],[ANCHOR=],[LINK=])
• End-tidal desflurane concentration was reduced by 25% compared with standard anaesthesia-monitoring practice([FOOTNOTE=White PF, Ma H, Tang J, et al. Does the use of electroencephalographic bispectral index or auditory evoked potential index monitoring facilitate recovery after desflurane anesthesia in the ambulatory setting? Anesthesiology. 2004;100(4):811-817.],[ANCHOR=],[LINK=])
• Titration of isoflurane using the BIS™ index decreased use of isoflurane and contributed to faster emergence of elderly patients undergoing elective knee or hip replacement surgery([FOOTNOTE=Wong J, Song D, Blanshard H, et al. Titration of isoflurane using BIS™ index improves early recovery of elderly patients undergoing orthopedic surgeries. Can J Anaesth. 2002; 49(1):13-18.],[ANCHOR=],[LINK=])
• For asleep-awake craniotomy procedures, where titratable anaesthesia is preferred to facilitate more predictable intraoperative wake-up, BIS™ monitoring can provide further information to guide drug administration and predict responsiveness.([FOOTNOTE= Conte V, L’Acqua C, Rotelli S, Stocchetti N. Bispectral index during asleep-awake craniotomies. J Neurosurg Anesthesiol. 2013; 25(3):279-284.],[ANCHOR=],[LINK=])

Studies show an 80% reduction in awareness has been demonstrated when using BIS™ monitoring compared to routine care in both intravenous (TIVA, total intravenous anaesthesia) and inhaled drug combinations in anaesthesia patients.([FOOTNOTE=Zhang, C. Bispectral index monitoring prevents awareness during total intravenous anesthesia: a prospective, randomized, double-blinded, multi-center controlled trial. Chinese Medical Journal. 2011;124(22):3664-3669.],[ANCHOR=],[LINK=])^,([FOOTNOTE=Myles PS, Leslie K, McNeil J, et al. Bispectral index monitoring to prevent awareness during anesthesia: the B-Aware randomised controlled trial. Lancet. 2004;363(9423):1757-1763.],[ANCHOR=],[LINK=])^,([FOOTNOTE=Ekman A, Lindholm ML, Lennmarken, Sandin R. Reduction in the incidence of awareness using BIS™ monitoring. Acta Anaesthesiol Scand. 2004:48(1):20-26.],[ANCHOR=],[LINK=])

With TIVA procedures, the incidence of awareness can be 5-10 times greater than with inhaled anaesthetics as a result of the short-acting nature of some intravenous anaesthetics used, along with the challenges of monitoring the patient’s level of consciousness. This is all the more reason that BIS™ monitoring is important — it may help reduce the incidence of awareness during TIVA procedures and during inhaled anaesthesia.([FOOTNOTE=Sebel PS, Bowdle TA, Ghoneim MM, et al. The incidence of awareness during anesthesia: a multicenter United States study. Anesth Analg. 2004;99(3):833-839.],[ANCHOR=],[LINK=])