A502 Ketamine Causes a Paradoxical Increase in the Bispectral Index

Morioka, Nobutada; Ozaki, Makoto; Matsukawa, Takashi; Sessler, D. I.; Atarashi, Kenji; Suzuki, Hidehiro

doi:10.1097/00000542-199709001-00502

Cited by 34 publications

(16 citation statements)

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“…1) was an artefact or coincidence. BIS has been reported as misleading on occasions when xenon [15], ketamine [16] or deep hypothermia [17] are used during anaesthesia. There is one report of nitrous oxide supplementation causing an unexpected increase in BIS score [18], and it has been suggested that sevoflurane might also increase excitability [19].…”

Section: Discussionmentioning

confidence: 99%

Bispectral index‐guided management of anaesthesia in permanent vegetative state

Pandit

Schmelzle-Lubiecki²,

Goodwin³

et al. 2002

Anaesthesia

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SummaryA patient in a permanent vegetative state required general anaesthesia for dental surgery. Because of the uncertainties involved in the appropriate monitoring and assessment of the conscious level of patients in a permanent vegetative state, it was decided to use the bispectral index to help guide the anaesthetic depth during surgery. We found that the bispectral index profile during anaesthesia and surgery was similar to that of a normal subject. The findings raise the possibility that patients in permanent vegetative states might sense noxious stimuli at a cortical level.

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Section: Discussionmentioning

confidence: 99%

Bispectral index‐guided management of anaesthesia in permanent vegetative state

Pandit

Schmelzle-Lubiecki²,

Goodwin³

et al. 2002

Anaesthesia

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“…Figura 3 -Técnicas Usadas para Gerar o "spectra" Comprimido LIMITAÇÕES DO BIS A cetamina, que no conceito farmacológico não é um hipnóti-co, produz anestesia dissociativa com efeitos excitatórios no EEG. A dose de cetamina de 0,25 a 0,5 mg.kg -1 é suficiente para produzir ausência de respostas, mas o BIS não se modifica 16,17 . A associação da cetamina à anestesia intravenosa com o propofol causa efeito aditivo, mas o BIS não se modifica 18,19 .…”

Section: Avaliação Clínica Do Bisunclassified

“…Ketamine doses of 0.25 to 0.5 mg.kg -1 are sufficient to produce absence of responses, but BIS remains unchanged 16,17 . The association of ketamine to intravenous propofol has an additive effect, but BIS remains unchanged 18,19 .…”

Section: Bis Clinical Evaluationmentioning

confidence: 99%

Monitor de profundidade da hipnose. A eletroencefalografia bispectral

Vianna¹

2001

Rev. Bras. Anestesiol.

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“…Propofol decreased the BIS value to 40, and ketamine produced a BIS value near 90 25 . Doses of ketamine that produced unconsciousness had virtually no effect on the EEG bispectrum and did not cause a paradoxical increase in the BIS value 26 …”

Section: Is Bispectral Analysis the Answer?mentioning

confidence: 99%

Monitoring for Intraoperative‐Awareness

Ouellette¹,

Simpson²

1998

AORN Journal

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Despite advances in anesthetic technique and technology, intraoperative awareness continues to occur with alarming regularity. The psychological effects on patients and the medicolegal consequences to providers have created the need for a reliable monitor of the hypnotic component of anesthesia. A new technology known as bispectral analysis (BIS) has the potential to put an end to the devastating occurrence of intraoperative awareness, as well as improve the overall effectiveness of anesthetic delivery and the surgical experience. Applicable to almost any situation requiring sedation or general anesthesia, BIS's reliability is a real-time measure of hypnosis levels.

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A502 Ketamine Causes a Paradoxical Increase in the Bispectral Index

Cited by 34 publications

References 1 publication

Bispectral index‐guided management of anaesthesia in permanent vegetative state

Bispectral index‐guided management of anaesthesia in permanent vegetative state

Monitor de profundidade da hipnose. A eletroencefalografia bispectral

Monitoring for Intraoperative‐Awareness

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