Articles: anesthetics.
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Curr Opin Anaesthesiol · Aug 2023
ReviewHow obesity affects the disposition of intravenous anesthetics.
Understanding the changes in drug disposition of intravenous anesthetics in patients with obesity and administering appropriate doses are critical to avoid intraoperative awareness with recall because of underdosing and over-sedation and delayed emergence due to overdosing. Pharmacokinetic simulation or target-controlled infusion (TCI) using models that have been adapted to patients with obesity are necessary to select appropriate dosing regimens. This review aimed to describe the pharmacokinetic concepts underpinning the use of intravenous anesthetics, including propofol, remifentanil, and remimazolam, in patients with obesity. ⋯ Pharmacokinetic simulations or TCI using pharmacokinetic models that account for the influence of obesity on a drug's disposition are essential to predict plasma/effect-site concentrations of intravenous anesthetics and understand the temporal profile of drug concentrations and effect in patients with obesity, particularly severe obesity.
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Randomized Controlled Trial
Perioperative changes in neurocognitive and Alzheimer's disease-related cerebrospinal fluid biomarker in older patients randomised to isoflurane or propofol for anaesthetic maintenance.
Animal studies have shown that isoflurane and propofol have differential effects on Alzheimer's disease (AD) pathology and memory, although it is unclear whether this occurs in humans. ⋯ NCT01993836.
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Curr Opin Anaesthesiol · Aug 2023
ReviewManagement of anesthetic complications outside the operating room.
Nonoperating room anesthesia (NORA) procedures have seen a significant growth over the years along with an increase in the complexity and severity of cases. Providing anesthesia care in these often-unfamiliar locations is risky, and complications are common. This review aims to report the most recent updates regarding managing anesthesia-related complications in patients undergoing procedures in non-operating room locations. ⋯ Delivery of anesthesia care in out-of-operating room locations is associated with significant challenges. Meticulous planning, close communication with the procedural team, establishing protocols and pathways for help, along with interdisciplinary teamwork can facilitate safe, efficient, and cost-effective procedural care in the NORA suite.
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Review Meta Analysis
Effect of inhaled anaesthetics on cognitive and psychiatric outcomes in critically ill adults: a systematic review and meta-analysis.
Sedation of critically ill patients with inhaled anaesthetics may reduce lung inflammation, time to extubation, and ICU length of stay compared with intravenous (i.v.) sedatives. However, the impact of inhaled anaesthetics on cognitive and psychiatric outcomes in this population is unclear. In this systematic review, we aimed to summarise the effect of inhaled anaesthetics on cognitive and psychiatric outcomes in critically ill adults. ⋯ PROSPERO CRD42021236455.
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Cao and colleagues present a follow-up analysis of a previous RCT among >1200 older adults (mean age 72 yr) undergoing cancer surgery, originally designed to evaluate the effect of propofol or sevoflurane general anaesthesia on delirium, here to evaluate the effect of anaesthetic technique on overall survival and recurrence-free survival. Neither anaesthetic technique conferred an advantage on oncological outcomes. We suggest that although it is entirely plausible that the observed results are truly robust neutral findings, the present study could be limited, like most published studies in the field, by its heterogeneity and understandable absence of underlying individual patient-specific tumour genomic data. We argue for a precision oncology approach to onco-anaesthesiology research that recognises that cancer is not one but rather many diseases and that tumour genomics (and multi-omics) is a fundamental determinant relating drugs to longer-term outcomes.