Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Comparative Study
A comparison of the ability of the EEGo and BIS monitors to assess emergence following neurosurgery.
Deep anesthesia during microvascular decompression (MVD) for trigeminal neuralgia and cerebral aneurysm clipping may delay emergence. A new electroencephalographic (EEG) monitor, the EEGo, processes a raw EEG signal using time-delay analysis to display a reproducible signal transition from deep anesthesia through the excitement state to the awake state. We hypothesized that the EEGo monitor would be superior to the bispectral (BIS) monitor, not only in aiding emergence but also in detecting sudden changes in levels of hypnosis. ⋯ While the EEGo was faster than the BIS at indicating planned changes in levels of hypnosis throughout propofol administration prior to temporary clipping during aneurysm surgery, the EEGo was not superior to the BIS monitor in facilitating a more rapid emergence following neurosurgery.
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Letter Case Reports
[Cardiorespiratory arrest due to an air embolus from a peripheral venous line].
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To review the effects of hereditary hemorrhagic telangiectasia (HHT) in the parturient and the anesthetic management of such patients during pregnancy and delivery. ⋯ An understanding of the presence and potential development of life-threatening AVMs during pregnancy is imperative for anesthesiologists caring for parturients with HHT. Even in the asymptomatic patient, a high index of suspicion should be maintained, screening performed where possible and anesthetic technique adapted accordingly.
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To evaluate the effects of anesthetic induction on bi-ventricular function in patients with known preoperative left ventricular (LV) diastolic dysfunction undergoing coronary artery bypass grafting surgery (CABG). ⋯ In patients with left ventricular diastolic dysfunction, cardiac dimensions and bi-ventricular filling patterns are significantly altered after induction of general anesthesia. These changes can be explained to some extent by a reduction in venous return with general anesthesia, reduced atrial contractility, and the effect of positive pressure ventilation. Although the LV diastolic function score improved after induction of anesthesia, it is difficult to dissociate this effect from that of altered loading conditions.