Articles: function.
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Spinal bupivacaine is used for day-case surgery but the appropriate dose that guarantees hospital discharge is unknown. ⋯ Ambulatory surgery is possible under spinal anaesthesia with bupivacaine although the dose range that ensures reliable anaesthesia with duration short enough to guarantee ambulatory management is narrow.
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Anesthesia and analgesia · Nov 2016
ReviewMesopontine Switch for the Induction of General Anesthesia by Dedicated Neural Pathways.
We review evidence that the induction of anesthesia with GABAergic agents is mediated by a network of dedicated axonal pathways, which convey a suppressive signal to remote parts of the central nervous system. The putative signal originates in an anesthetic-sensitive locus in the brainstem that we refer to as the mesopontine tegmental anesthesia area (MPTA). This architecture stands in contrast to the classical notion that anesthetic molecules themselves directly mediate anesthetic induction after global distribution by the vascular circulation. ⋯ Known connectivity of the MPTA provides a scaffold for defining the specific projection pathways that mediate each of the functional components of anesthesia. Because MPTA lesions do not induce coma, the MPTA is not a key arousal nucleus essential for maintaining the awake state. Rather, it appears be a "gatekeeper" of arousal function, a major element in a flip-flop switching mechanism that executes rapid and reversible transitions between the awake and the anesthetic state.
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Acta Anaesthesiol Scand · Nov 2016
Capnocytophaga canimorsus bacteremia: clinical features and outcomes from a Helsinki ICU cohort.
Capnocytophaga canimorsus is a gram-negative rod capable of causing severe sepsis or septic shock. We studied the characteristics of patients with C. canimorsus bacteremia treated in intensive care unit (ICU). ⋯ Capnocytophaga canimorsus infection may present with severe sepsis or septic shock with organ dysfunction, most frequently coagulopathy and acute kidney injury. Previously recognized risk factors are not always present. A dog in a household may be a sufficient exposure for developing a severe form of the disease. The possibility of C. canimorsus infection should be considered in patients with any contact with dogs, even in immunocompetent patients.
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Inferior outcomes for medial unicompartmental knee arthroplasty (UKA) patients with preoperative medial tibial bone marrow lesions (BMLs) were recently reported. The purpose of this study was to compare the location and severity of BML on postoperative outcomes after medial UKA and TKA using a larger sample size and more rigorous magnetic resonance imaging (MRI) evaluation. ⋯ Medial tibial BMLs were not associated with inferior outcomes. Clinically, these results suggest that BMLs should not be considered a contraindication for medial UKA.
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Observational Study
Stressors in anaesthesiology: development and validation of a new questionnaire: A cross-sectional study of Portuguese anaesthesiologists.
Stress in anaesthesiologists is a common and multifactorial problem related to patients, colleagues and organisations. The consequences of stress include depression, work-home conflicts and burnout. Reduction in stress can be achieved by reducing the number and magnitude of stressors or by increasing resilience strategies. ⋯ SQA is a well adjusted measure for assessing stressors in anaesthesia physicians and includes clinical, organisational and team stress factors. Results showed that the SQA is a robust and reliable instrument.