Articles: general-anesthesia.
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Respiratory function is fundamental in the practice of anesthesia. Knowledge of basic physiologic principles of respiration assists in the proper implementation of daily actions of induction and maintenance of general anesthesia, delivery of mechanical ventilation, discontinuation of mechanical and pharmacologic support, and return to the preoperative state. ⋯ We review the path of oxygen from air to the artery and of carbon dioxide the opposite way, and we have the causes of hypoxemia and of hypercarbia based on these very footpaths. We present the actions of pressure, flow, and volume as the normal determinants of ventilation, and we review the resulting abnormalities in terms of changes of resistance and compliance.
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Curr Opin Anaesthesiol · Jun 2019
ReviewAnaesthetic neuroprotection in children: does it exist or is it all just bad?
In the last 20 years, data from studies of laboratory animals, including nonhuman primates, have provided ample evidence that general anaesthetic drugs cause pathological changes in developing central nervous system (neurotoxicity). Recently, a new area of research has been developed in order to recognize any possible actions that can attenuate anaesthetics neurotoxicity. This review aims to provide an overview of the recent literature on neuroprotection. ⋯ Recent literature largely explores a variety of solutions in order to preserve and reduce the damage caused by anaesthetic agents. At the moment, none of the presented solutions regarding neuroprotection is applicable in clinical setting. Further research studies are needed.
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Curr Opin Anaesthesiol · Jun 2019
ReviewAnesthesia for predelivery procedures: ex-utero intrapartum treatment/intrauterine transfusion/surgery of the fetus.
The aim of this study was to review the current literature on anesthesia for predelivery procedures and to summarize recent findings on anesthesiological methods used. ⋯ Predelivery procedures require a differentiated anesthesia approach depending on the invasiveness of the intervention. Anesthesia ranges from monitored care to neuraxial anesthesia and general anesthesia. Depending on the procedure uterine relaxation and fetal immobilization are crucial for technical success. Interdisciplinary consultation optimizes the anesthesia plan for complex procedures.
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Anesthesiology clinics · Jun 2019
ReviewNonoperating Room Anesthesia: Anesthesia in the Gastrointestinal Suite.
Exponential growth in endoscopy suite procedures due to technological advances requires teamwork between anesthesiologists, endoscopists, nursing teams, and technical and support staff. The current standard of care for moderate sedation includes a combination of anxiolytic drugs and analgesic drugs and sometimes are not adequate to ensure patient safety, efficiency, and comfort. The use of anesthesia services can improve safety, recovery, turnovers, and efficiency. The article discusses comprehensive preoperative evaluation, optimization of comorbidities, and intraoperative airway management strategies to deliver safe and efficient anesthesia, given the need to share the airway and allow the use of carbon dioxide in the gastrointestinal suite.
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The drug-induced, reversible coma of anaesthesia requires three clinical outcomes: unconsciousness, immobility, and the control of autonomic nervous system (ANS) responses to surgical stimulation. Producing the anaesthetised state with a single anaesthetic agent, such as an inhaled vapour or propofol, is challenging, primarily because suppressing ANS responses requires very high anaesthetic concentrations, resulting in haemodynamic depression and prolonged recovery. The antinociceptive effects of opioids (i.e. minimum alveolar concentration reduction) are thus central to the well-entrenched 'balanced anaesthesia' concept. ⋯ But there is a paucity of data on how intraoperative opioid usage patterns may be contributing to persistent opioid use after surgery. There are cogent reasons to moderate perioperative opioid use, including intraoperative opioids, but whether these changes in practice integral to the multimodal general anaesthesia concept will improve anaesthesia outcomes, including persistent opioid use after surgery, is unknown. Studies investigating these issues are an important research priority.