Pract Res Clin Anaesthesiol 2006; 20: 81–99. 3. Kin N, Konstadt SN, Sato K, Hanaoka K. Reduction of bispectral index value associated with clinically significant cerebral air embolism. J Cardiothorac Vasc Anesth 2004; 18: 82–84. 4. Hemmerling TM, Olivier JF, Basile F, Le N, Prieto I. Bispectral index as an indicator of cerebral hypoperfusion during off-pump coronary artery bypass grafting. Anes...

INTRODUCTION We aimed to identify the entropy levels that would be equivalent to the bispectral index (BIS) levels in sevoflurane anaesthesia in patients who are to undergo elective lumbar disc surgery. MATERIAL AND METHODS Thirty cases in ASA groups I-II who underwent lumbar disc surgery under general anaesthesia were included in our study after obtaining the consent of the patients and Ethi...

BACKGROUND Etomidate frequently induces myoclonus, so it may affect electromyographics (EMG). And EMG commonly has an effect on the bispectral index scale (BIS) and spectral entropy. This study was performed to compare the effect of etomidate on BIS, response entropy (RE) and state entropy (SE) during induction of anesthesia. METHODS Fifty patients (ASA I or II) scheduled for elective surgery...

BACKGROUND Recent studies have suggested that electroencephalogram (EEG) bispectral index (BIS) monitoring can improve recovery after anaesthesia and save money by shortening patients' postoperative stay. We wanted to evaluate the direct costs of BIS monitoring and to measure immediate recovery after anaesthesia in patients with or without BIS monitoring. METHODS Eighty patients undergoing gy...

BACKGROUND Theoretically, L-type calcium channel blockers could modulate anesthetic effects. Nicardipine does not affect the bispectral index (BIS), but nimodipine, which can penetrate the blood-brain barrier, has not been studied. The aim of this study was to evaluate whether a single dose of intravenous nicardipine or nimodipine could affect BIS following rapid sequence intubation. METHODS ...

Earlier diagnosis of cerebral vasospasm and delayed cerebral ischemia (DCI) and treatment has the potential to decrease post-bleed morbidity after subarachnoid hemorrhage (SAH). Previous studies have shown that electroencephalogram (EEG) can detect blood flow changes associated with DCI sooner than other modalities potentially leading to earlier diagnosis. However, continual monitoring with raw...

Methods. One hundred ASA I and II patients were randomized to receive 1 MAC of desflurane or sevoflurane during manual ventilation or not. Anaesthesia was induced with an effect-sitecontrolled infusion of remifentanil at 2 ng ml 1 for 3 min. Patients then received propofol to induce loss of consciousness (LOC). Rocuronium (0.6 mg kg ) was given at LOC and the trachea was intubated after 90 s of...

In this study, we questioned whether propofol provided clinical benefits compared with midazolam in terms of neuropsychometric recovery, safety profile and patient tolerance. Patients, aged >18 yrs, were randomised to receive midazolam or propofol, given by non-anaesthetist physicians to achieve moderate levels of sedation as assessed by the electroencephalographic bispectral index (BIS; betwee...

BACKGROUND Wake-up tests may be necessary during surgery for kypho-scoliosis to ensure that spinal function remains intact. It is difficult to predict the time when patients can respond to a verbal command. We evaluated the effectiveness of the bispectral index (BIS) and its relation to patients' levels of consciousness in wake-up tests during desflurane and sevoflurane anesthesia. METHODS Ei...