Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Meta Analysis Comparative Study
Efficacy and safety of erythropoietin and iron therapy to reduce red blood cell transfusion in surgical patients: a systematic review and meta-analysis.
Erythropoietin further reduces red blood cell transfusion in surgical patients, beyond iron therapy alone.
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Review Meta Analysis
Preoperative intravenous dexamethasone prevents tracheal intubation-related sore throat in adult surgical patients: a systematic review and meta-analysis.
Why is this relevant?
Sore throat following endotracheal intubation is common (reported in up to 68%), and along with postoperative nausea & vomiting, negatively impacts postoperative well-being.
Small studies have previously suggested that IV dexamethasone reduces sore throat due to intubation. It is thought this occurs by reducing mucosal inflammation at the point of tracheal cuff contact, the presumed aetiology of the majority of post-ETT sore throat.
Kuriyama and Maeda conducted a systematic review and meta-analysis of 15 RCTs totalling 1,849 patients.
And they found?
Preoperative dexamethasone IV (~4-10 mg across the studies) reduced the incidence of sore throat by almost 40% (RR 95% CI 0.51-0.75) and mean severity by 1.1 (SMD 95% CI 1.8-0.3).
Take-home...
Given the established effectiveness of preoperative dexamethasone to safely reduce post-operative nausea and vomiting, this meta-analysis affirms another important indication for the routine use of dexamethasone in intubated patients who do not have contraindications to steroid use.
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Review Meta Analysis Comparative Study
Anesthetic technique and cancer outcomes: a meta-analysis of total intravenous versus volatile anesthesia.
Cancer-related mortality, a leading cause of death worldwide, is often the result of metastatic disease recurrence. Anesthetic techniques have varying effects on innate and cellular immunity, activation of adrenergic-inflammatory pathways, and activation of cancer-promoting cellular signaling pathways; these effects may translate into an influence of anesthetic technique on long-term cancer outcomes. To further analyze the effects of propofol (intravenous) and volatile (inhalational gas) anesthesia on cancer recurrence and survival, we undertook a systematic review with meta-analysis. ⋯ This meta-analysis suggests that propofol-TIVA use may be associated with improved recurrence-free survival and overall survival in patients having cancer surgery. This is especially evident where major cancer surgery was undertaken. Nevertheless, given the inherent limitations of studies included in this meta-analysis these findings necessitate prospective randomized trials to guide clinical practice.
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Review Meta Analysis
A systematic review of interventions to facilitate extubation in patients difficult-to-wean due to delirium, agitation, or anxiety and a meta-analysis of the effect of dexmedetomidine.
Delirium, agitation, and anxiety may hinder weaning from mechanical ventilation and lead to increased morbidity and healthcare costs. The most appropriate clinical approach to weaning in these contexts remains unclear and challenging to clinicians. The objective of this systematic review was to identify effective and safe interventions to wean patients that are difficult-to-wean from mechanical ventilation due to delirium, agitation, or anxiety. ⋯ This systematic review and meta-analysis provides low quality evidence to suggest the use of dexmedetomidine in patients deemed difficult-to-wean due to agitation, delirium, or anxiety. Insufficient evidence was found regarding other interventions to provide any recommendation.
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Xenon has been shown to have positive neurologic effects in various pre-clinical models. This study systematically reviewed the randomized-controlled trials (RCTs) investigating neurologic and cognitive outcomes associated with the clinical use of xenon. ⋯ Despite promising pre-clinical results, the evidence for positive clinical neurologic and cognitive outcomes associated with xenon administration is modest. Nevertheless, there is some evidence to suggest that xenon may be associated with better neurologic outcomes compared with the standard of care therapy in certain specific clinical situations. More clinical trials are needed to determine any potential benefit linked to xenon administration.