Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Review Comparative Study
High-flow nasal cannula for acute hypoxemic respiratory failure in patients with COVID-19: systematic reviews of effectiveness and its risks of aerosolization, dispersion, and infection transmission.
We conducted two World Health Organization-commissioned reviews to inform use of high-flow nasal cannula (HFNC) in patients with coronavirus disease (COVID-19). We synthesized the evidence regarding efficacy and safety (review 1), as well as risks of droplet dispersion, aerosol generation, and associated transmission (review 2) of viral products. ⋯ High-flow nasal cannula may reduce the need for invasive ventilation and escalation of therapy compared with COT in COVID-19 patients with acute hypoxemic respiratory failure. This benefit must be balanced against the unknown risk of airborne transmission.
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Review Comparative Study
High-flow nasal cannula for acute hypoxemic respiratory failure in patients with COVID-19: systematic reviews of effectiveness and its risks of aerosolization, dispersion, and infection transmission.
We conducted two World Health Organization-commissioned reviews to inform use of high-flow nasal cannula (HFNC) in patients with coronavirus disease (COVID-19). We synthesized the evidence regarding efficacy and safety (review 1), as well as risks of droplet dispersion, aerosol generation, and associated transmission (review 2) of viral products. ⋯ High-flow nasal cannula may reduce the need for invasive ventilation and escalation of therapy compared with COT in COVID-19 patients with acute hypoxemic respiratory failure. This benefit must be balanced against the unknown risk of airborne transmission.
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We performed a systematic review of the literature to identify the ideal blood pressure (BP) target in neurologically deceased organ donors to optimize outcomes of recipient organ function and survival, and organs transplanted per donor. ⋯ A systolic BP less 90 mmHg may be associated with graft dysfunction in kidney recipients, but this is based on very low certainty in evidence. Although an ideal and universal BP target in neurologically deceased organ donors is not clearly identifiable in the literature, this could reflect the complexity of donor hemodynamics and the need for individualized targets for different organs. Further prospective research is required to address these questions.
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We performed a systematic review of the literature to identify the ideal blood pressure (BP) target in neurologically deceased organ donors to optimize outcomes of recipient organ function and survival, and organs transplanted per donor. ⋯ A systolic BP less 90 mmHg may be associated with graft dysfunction in kidney recipients, but this is based on very low certainty in evidence. Although an ideal and universal BP target in neurologically deceased organ donors is not clearly identifiable in the literature, this could reflect the complexity of donor hemodynamics and the need for individualized targets for different organs. Further prospective research is required to address these questions.
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The use of extracorporeal membrane oxygenation (ECMO) is increasing globally, although mortality in this setting remains high. Patients on ECMO may be potential organ donors in the context of withdrawal of life-sustaining measures (WLSM) or neurologic determination of death (NDD). Nevertheless, there are currently no Canadian standards to guide clinicians on NDD or WLSM for the purposes of organ donation in this patient population. ⋯ In addition, we review important considerations for NDD in ECMO, including management of potential confounders, strategies for controlling oxygen and carbon dioxide levels during apnea testing, and the appropriate use of ancillary tests to support NDD. In the context of ECMO support, there is limited evidence to guide NDD and WLSM for the purposes of organ donation. Drawing upon extensive clinical experience, we provide protocols for these processes and review other important considerations in an effort to maximize donor potential in this growing patient population.