Journal of clinical monitoring and computing
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J Clin Monit Comput · Dec 2018
Comment LetterPhenylephrine and paradoxically increased muscle tissue oxygenation: is the mechanism related to local venoconstriction or augmented venous return?
Abstract
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Using the thyromental distance (TMD) measured based on the ultrasonographic location of the thyroid cartilage prominence as the criterion, we investigated the accuracy of TMD measurement by surface landmark identification of the thyroid cartilage prominence. Twenty-nine anesthetist resident volunteers were recruited, including 10 first-year residents, 9 second-year residents and 10 third-year residents. Each volunteer measured the other 28 volunteers' TMD. ⋯ The error rates of anesthetist residents of first-year, second-year and third-year were 34, 27, and 31%, respectively, and were not significantly different. The error of TMD measurement by surface landmark identification is often, especially for women. More clinic experience don't improve it.
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J Clin Monit Comput · Oct 2018
Comparative StudyThe pressure exerted on the tongue during intubation with simultaneous cervical spine immobilisation: a comparison between four videolaryngoscopes and the Macintosh laryngoscope-a manikin study.
Excessive pressures exerted on the tongue during intubation may be associated with serious complications and may make intubation more difficult. The aim of this study was to evaluate five different intubating devices in the hands of experienced anaesthetists during simulated conditions of reduced cervical spine mobility. Forty senior anaesthetists participated in the study (female = 18, male = 22). ⋯ Their use may be associated with less complications. Furthermore, male anaesthetists exerted higher pressures on the soft tissues although this was neither statistically nor clinically significant. There was higher failed intubation rate in the male anaesthetist group.
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J Clin Monit Comput · Oct 2018
Observational StudyA pilot study to record visual evoked potentials during prone spine surgery using the SightSaver™ photic visual stimulator.
This is a pilot study to assess the clinical safety and efficacy of recording real-time flash visual evoked potentials (VEPs) using the SightSaver TM Visual Stimulator mask during prone spine surgery. A prospective, observational pilot study. Twenty patients presenting for spine surgery (microdiscectomy, 1-2 level lumbar fusion, or > 2 levels thoraco-lumbar fusion) were enrolled. ⋯ The definitive applications remain to be determined, but likely include use in select patients and/or surgeries. Here, we have validated the device as safe and effective, and show that VEPs can be recorded in real time under general anesthesia in the prone position. Future studies should be directed towards understanding the ideal anesthetic regimen to facilitate stable VEP recording during prone spine surgery.