Anesthesia and analgesia
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Anesthesia and analgesia · Sep 2009
Case ReportsManagement of the difficult infant airway with the Storz Video Laryngoscope: a case series.
The incorporation of video technology into laryngoscopes provides an additional option for the management of difficult intubations. We report the successful use of the Miller 1 Storz Video Laryngoscope in seven infants with difficult direct laryngoscopy.
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Approximately 25% of initial arteriovenous fistula (AVF) placements will fail as a result of thrombosis or failure to develop adequate vessel size and blood flow. Fistula maturation is impacted by patient characteristics and surgical technique, but both increased vein diameter and high fistula blood flow rates are the most important predictors of successful AVFs. Anesthetic techniques used in vascular access surgery (monitored anesthesia care, regional blocks, and general anesthesia) may affect these characteristics and fistula failure. ⋯ Use of regional blocks may improve the success of vascular access procedures by producing significant vasodilatation, greater fistula blood flow, sympathectomy-like effects, and decreased maturation time. However, a large-scale, prospective, clinical trial comparing the different anesthetic techniques is still needed to verify these findings.
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Anesthesia and analgesia · Sep 2009
Anesthesiologists with substance use disorders: a 5-year outcome study from 16 state physician health programs.
Anesthesiologists have a higher rate of substance use disorders than other physicians, and their prognoses and advisability to return to anesthesiology practice after treatment remain controversial. Over the past 25 yr, physician health programs (PHPs), created under authority of state medical regulatory boards, have become primary resources for management and monitoring of physicians with substance abuse and other mental health disorders. ⋯ Anesthesiologists in our sample treated and monitored for substance disorders under supervision of PHPs had excellent outcomes similar to other physicians, with no higher mortality, relapse rate, or disciplinary rate and no evidence in their records of patient harm. It is postulated that differences of study design account for contradictory conclusions from other reports.
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Anesthesia and analgesia · Sep 2009
The effect on cerebral tissue oxygenation index of changes in the concentrations of inspired oxygen and end-tidal carbon dioxide in healthy adult volunteers.
A variety of near-infrared spectroscopy devices can be used to make noninvasive measurements of cerebral tissue oxygen saturation (ScO2). The ScO2 measured by the NIRO 300 spectrometer (Hamamatsu Photonics, Japan) is called the cerebral tissue oxygenation index (TOI) and is an assessment of the balance between cerebral oxygen delivery and utilization. We designed this study to investigate the effect of systemic and intracranial physiological changes on TOI. ⋯ TOI is an easy-to-monitor variable that provides real-time, multisite, and noninvasive assessment of the balance between cerebral oxygen delivery and utilization. However, TOI is a complex variable that is affected by SaO2 and ETCO2, and, to a lesser extent, by MBP and CBV. Clinicians need to be aware of the systemic and cerebral physiological changes that can affect TOI to interpret changes in this variable during clinical monitoring.
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Anesthesia and analgesia · Sep 2009
ReviewIntraoperative awareness during general anesthesia for cesarean delivery.
Intraoperative awareness is defined as the spontaneous recall of an event occurring during general anesthesia. A move away from rigid anesthetic protocols, which were designed to limit drug transmission across the placenta, has reduced the incidence of awareness during cesarean delivery to approximately 0.26%. Nevertheless, it remains an undesirable complication with potential for the development of posttraumatic stress disorder. ⋯ Because of its rapid uptake, nitrous oxide remains an important adjunct to reduce the risk of awareness during emergency cesarean delivery. In the absence of fetal compromise, there is no rationale for an inspired oxygen concentration above 0.33. Deeper levels of anesthesia reduce the incidence of awareness; current evidence does not suggest an increased risk of tocolysis or fetal morbidity.