Articles: general-anesthesia.
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Anesthesia and analgesia · Feb 2021
Observational StudyDo Elderly Patients With Diastolic Dysfunction Require Higher Doses of Norepinephrine During General Anesthesia for Noncardiac Surgeries? A Prospective Observational Study.
Diastolic dysfunction is a risk factor for postoperative major cardiovascular events. During anesthesia, patients with diastolic dysfunction might experience impaired hemodynamic function and worsening of diastolic function, which in turn, might be associated with a higher incidence of postoperative complications.We aimed to investigate whether patients with diastolic dysfunction require higher doses of norepinephrine during general anesthesia. Furthermore, we aimed to examine the association between the grade of diastolic dysfunction and the E/e' ratio during anesthesia. A high E/e' ratio corresponds to elevated filling pressures and is an important measure of impaired diastolic function. ⋯ We did not find evidence for an association between diastolic dysfunction and impaired hemodynamic function, as expressed by high vasopressor support during anesthesia. Additionally, our findings suggest that diastolic function, as expressed by the E/e' ratio, does not worsen during anesthesia.
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Randomized Controlled Trial
Nociception-monitor-guided opioid administration in radical retropubic prostatectomy: a randomised controlled trial.
This RCT investigated the effect of opioid titration by three different nociception monitoring devices or clinical signs during general anaesthesia. ⋯ NCT03380949.
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Electroencephalographic (EEG) activity is used to monitor the neurophysiology of the brain, which is a target organ of general anaesthesia. Besides its use in evaluating hypnotic states, neurophysiologic reactions to noxious stimulation can also be observed in the EEG. Recognising and understanding these responses could help optimise intraoperative analgesic management. ⋯ Alpha dropout may indicate a return of thalamocortical communication, from an idling mode to an operational mode. Each of these EEG changes reflect an incomplete modulation of pain signals and can be mitigated by administration of opioid or the use of regional anaesthesia techniques. Future studies should evaluate whether titrating analgesic drugs in response to these EEG signals reduces postoperative pain and influences other postoperative outcomes, including the potential development of chronic pain.
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Review Meta Analysis
A Meta-Analysis of Locoregional Anesthesia Versus General Anesthesia in Endovascular Repair of Ruptured Abdominal Aortic Aneurysm.
To conduct a meta-analytic review of studies investigating the effect of the anesthesia modality on perioperative mortality in endovascular repair of ruptured abdominal aortic aneurysms (REVAR). ⋯ REVAR under LA is associated with a lower 30-day/in-hospital mortality than REVAR under GA. However, because the included studies may have had some observation bias, further randomized controlled trials are warranted to validate the present results.
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Randomized Controlled Trial Multicenter Study Comparative Study
Engaging patients as partners in a multicentre trial of spinal versus general anaesthesia for older adults.
Engaging patients-defined broadly as individuals with lived experience of a given condition, family members, caregivers, and the organisations that represent them-as partners in research is a priority for policymakers, funders, and the public. Nonetheless, formal efforts to engage patients are absent from most studies, and models to support meaningful patient engagement in clinical anaesthesia research have not been previously described. Here, we review our experience in developing and implementing a multifaceted patient engagement strategy within the Regional Versus General Anesthesia for Promoting Independence After Hip Fracture (REGAIN) surgery trial, an ongoing randomised trial comparing spinal vs general anaesthesia for hip fracture surgery in 1600 older adults across 45 hospitals in the USA and Canada. ⋯ Activities spanned a continuum ranging from events designed to elicit patients' input on key decisions to longitudinal collaborations that empowered patients to actively participate in decision-making related to trial design and management. Engagement activities were highly acceptable to participants and led to concrete changes in the design and conduct of the REGAIN trial. The REGAIN experience offers a model for future efforts to engage patients as partners in clinical anaesthesia research, and highlights potential opportunities for investigators to increase the relevance of anaesthesia studies by incorporating patient voices and perspectives into the research process.