{"id":1246,"date":"2026-01-27T16:20:27","date_gmt":"2026-01-27T16:20:27","guid":{"rendered":"https:\/\/perfusfind.com\/ic\/?p=1246"},"modified":"2026-03-08T18:16:49","modified_gmt":"2026-03-08T18:16:49","slug":"awake-vs-sedated-cannulation-for-extra-corporeal-membrane-oxygenation-in-patients-with-covid-19-induced-acute-respiratory-distress-syndrome","status":"publish","type":"post","link":"https:\/\/perfusfind.com\/ic\/index.php\/2026\/01\/27\/awake-vs-sedated-cannulation-for-extra-corporeal-membrane-oxygenation-in-patients-with-covid-19-induced-acute-respiratory-distress-syndrome\/","title":{"rendered":"Awake vs. Sedated Cannulation for Extra-Corporeal Membrane Oxygenation in Patients with COVID-19 Induced Acute Respiratory Distress Syndrome"},"content":{"rendered":"<h4 id=\"ember2373\" class=\"ember-view reader-text-block__heading-3\">Why this article matters<\/h4>\n<p>&nbsp;<\/p>\n<p id=\"ember2374\" class=\"ember-view reader-text-block__paragraph\">Veno-venous extracorporeal membrane oxygenation (VV-ECMO) is routinely initiated in patients with severe ARDS after intubation, deep sedation, and often neuromuscular blockade. During the COVID-19 pandemic, however, some centers explored an alternative strategy: <strong>awake ECMO cannulation<\/strong>, in which patients are cannulated while spontaneously breathing and supported without invasive mechanical ventilation.<\/p>\n<p id=\"ember2375\" class=\"ember-view reader-text-block__paragraph\">The theoretical appeal is clear. Avoiding intubation may reduce ventilator-induced lung injury, prevent ventilator-associated pneumonia, preserve diaphragmatic function, and allow early mobilization. Yet robust comparative outcome data in ARDS have been limited, particularly in a homogeneous disease population.<\/p>\n<p id=\"ember2376\" class=\"ember-view reader-text-block__paragraph\">This multicenter study from the Israeli ECMO registry provides one of the most comprehensive comparisons to date between <strong>awake and sedated VV-ECMO cannulation<\/strong> in patients with <strong>COVID-19-induced ARDS<\/strong>.<\/p>\n<div class=\"article-editor-horizontal-rule__container\" contenteditable=\"false\">\n<hr class=\"article-editor-horizontal-rule\" \/>\n<div class=\"article-editor-horizontal-rule__delete-button-container\"><\/div>\n<\/div>\n<h3 id=\"ember2377\" class=\"ember-view reader-text-block__heading-3\">Study design and population<\/h3>\n<p id=\"ember2378\" class=\"ember-view reader-text-block__paragraph\">Investigators conducted a <strong>retrospective, multicenter cohort study<\/strong> across <strong>eight ECMO centers in Israel<\/strong>, using registry data collected between April 2020 and December 2022.<\/p>\n<ul>\n<li><strong>Study group:<\/strong> 24 patients cannulated for VV-ECMO while awake and spontaneously breathing<\/li>\n<li><strong>Control group:<\/strong> 96 patients cannulated after sedation and invasive mechanical ventilation<\/li>\n<li>Groups were matched 1:4 by <strong>age, sex, and body mass index<\/strong><\/li>\n<\/ul>\n<p id=\"ember2380\" class=\"ember-view reader-text-block__paragraph\">All patients met Berlin criteria for ARDS and were treated according to local clinical judgment, as <strong>no formal selection criteria for awake ECMO exist<\/strong>.<\/p>\n<p id=\"ember2381\" class=\"ember-view reader-text-block__paragraph\">The primary outcome was <strong>six-month survival<\/strong>. Secondary outcomes included ECMO duration, ICU length of stay, duration of invasive mechanical ventilation, and complication rates.<\/p>\n<hr class=\"reader-divider-block__horizontal-rule\" \/>\n<h4 id=\"ember2382\" class=\"ember-view reader-text-block__heading-3\">Baseline differences worth noting<\/h4>\n<p>&nbsp;<\/p>\n<p id=\"ember2383\" class=\"ember-view reader-text-block__paragraph\">Patients cannulated while awake differed from controls in several clinically meaningful ways:<\/p>\n<ul>\n<li>Lower <strong>SOFA scores<\/strong> at ECMO initiation (5.2 vs. 9.1), largely reflecting the absence of mechanical ventilation and sedation<\/li>\n<li>Lower pre-ECMO <strong>PaCO\u2082<\/strong> and higher pH, consistent with preserved spontaneous ventilation<\/li>\n<li>Half of the awake group was supported with <strong>HFNC<\/strong>, and ~42% with <strong>NIV<\/strong>, prior to cannulation<\/li>\n<\/ul>\n<p id=\"ember2385\" class=\"ember-view reader-text-block__paragraph\">Importantly, many conventional severity metrics (SOFA, PaO\u2082\/FiO\u2082) are inherently influenced by ventilatory status, making <strong>direct severity comparisons challenging<\/strong>.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"article-editor-horizontal-rule__container\" contenteditable=\"false\">\n<hr class=\"article-editor-horizontal-rule\" \/>\n<div class=\"article-editor-horizontal-rule__delete-button-container\"><\/div>\n<\/div>\n<h3 id=\"ember2386\" class=\"ember-view reader-text-block__heading-3\">Key results<\/h3>\n<p id=\"ember2387\" class=\"ember-view reader-text-block__paragraph\">Several findings stood out:<\/p>\n<p id=\"ember2388\" class=\"ember-view reader-text-block__paragraph\"><strong>Survival<\/strong><\/p>\n<ul>\n<li>Six-month survival was <strong>higher in the awake group<\/strong> (75% vs. 49%) in unadjusted analyses<\/li>\n<li>After adjustment for PaO\u2082\/FiO\u2082 and COVID-19 variant, the association was <strong>attenuated and no longer statistically significant<\/strong>, though the hazard ratio remained below 1<\/li>\n<\/ul>\n<p id=\"ember2390\" class=\"ember-view reader-text-block__paragraph\"><strong>Mechanical ventilation exposure<\/strong><\/p>\n<ul>\n<li>63% of awake-cannulated patients were eventually intubated, typically due to uncontrolled respiratory drive or clinical deterioration<\/li>\n<li>Despite this, the awake group accrued a mean of <strong>~12 mechanical ventilation-free days<\/strong> during ECMO<\/li>\n<\/ul>\n<p id=\"ember2392\" class=\"ember-view reader-text-block__paragraph\"><strong>Infectious complications<\/strong><\/p>\n<ul>\n<li><strong>No cases of pneumonia<\/strong> occurred in patients who remained non-intubated throughout their ECMO course<\/li>\n<li>Overall infectious complications were numerically lower in the awake group<\/li>\n<\/ul>\n<p id=\"ember2394\" class=\"ember-view reader-text-block__paragraph\"><strong>ECMO and ICU duration<\/strong><\/p>\n<ul>\n<li>ECMO run time and ICU length of stay were <strong>similar between groups<\/strong>, arguing against simple disease-severity differences<\/li>\n<\/ul>\n<hr class=\"reader-divider-block__horizontal-rule\" \/>\n<h3 id=\"ember2396\" class=\"ember-view reader-text-block__heading-3\">How should we interpret these findings?<\/h3>\n<p id=\"ember2397\" class=\"ember-view reader-text-block__paragraph\">The results suggest that <strong>awake VV-ECMO is feasible<\/strong> in carefully selected patients with COVID-19 ARDS and may reduce exposure to invasive ventilation and ventilator-associated complications.<\/p>\n<p id=\"ember2398\" class=\"ember-view reader-text-block__paragraph\">However, the authors appropriately emphasize caution:<\/p>\n<ul>\n<li>The study is <strong>retrospective<\/strong> and susceptible to <strong>selection bias<\/strong><\/li>\n<li>Awake cannulation was not randomized and depended heavily on clinician judgment and patient cooperation<\/li>\n<li>A phenomenon akin to <strong>confounding by indication or depletion of susceptibility<\/strong> may be present, where patients with more favorable trajectories were preferentially selected for awake ECMO<\/li>\n<li>Adjustment for key covariates reduced the apparent survival advantage<\/li>\n<\/ul>\n<p id=\"ember2400\" class=\"ember-view reader-text-block__paragraph\">As such, the findings should be considered <strong>hypothesis-generating<\/strong>, not definitive evidence of superiority.<\/p>\n<hr class=\"reader-divider-block__horizontal-rule\" \/>\n<h3 id=\"ember2401\" class=\"ember-view reader-text-block__heading-3\">Clinical implications<\/h3>\n<p id=\"ember2402\" class=\"ember-view reader-text-block__paragraph\">This study does not argue that awake ECMO should replace conventional practice. Rather, it highlights that:<\/p>\n<ul>\n<li>Awake ECMO can be safely attempted in <strong>highly selected ARDS patients<\/strong><\/li>\n<li>Avoiding intubation may reduce infectious complications and preserve ventilator-free time<\/li>\n<li>Careful monitoring of respiratory drive is critical, as loss of control remains the most common reason for intubation<\/li>\n<li>Awake ECMO requires substantial institutional experience, staffing, and multidisciplinary coordination<\/li>\n<\/ul>\n<hr class=\"reader-divider-block__horizontal-rule\" \/>\n<h3 id=\"ember2404\" class=\"ember-view reader-text-block__heading-3\">Conclusion<\/h3>\n<p id=\"ember2405\" class=\"ember-view reader-text-block__paragraph\">Awake VV-ECMO cannulation in COVID-19-related ARDS is <strong>feasible<\/strong> and associated with encouraging unadjusted outcomes, including fewer infections and longer periods without invasive ventilation. However, once key confounders are accounted for, the apparent survival benefit becomes less certain.<\/p>\n<p id=\"ember2406\" class=\"ember-view reader-text-block__paragraph\">For now, awake ECMO should be viewed as a <strong>selective strategy<\/strong> rather than a new standard of care\u2014one that warrants further investigation through larger observational studies and target-trial emulation approaches.<\/p>\n<p><strong><a class=\"article-editor-link article-editor-link\" style=\"font-size: 16px; background-color: #ffffff;\" href=\"https:\/\/www.mdpi.com\/2077-0383\/15\/2\/876\" rel=\"noopener noreferrer\">ACCESS FULL ARTICLE HERE<\/a><\/strong><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium wp-image-1247\" src=\"https:\/\/perfusfind.com\/ic\/wp-content\/uploads\/2026\/01\/1769466961624-300x300.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/perfusfind.com\/ic\/wp-content\/uploads\/2026\/01\/1769466961624-300x300.png 300w, https:\/\/perfusfind.com\/ic\/wp-content\/uploads\/2026\/01\/1769466961624-150x150.png 150w, https:\/\/perfusfind.com\/ic\/wp-content\/uploads\/2026\/01\/1769466961624.png 450w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Why this article matters &nbsp; Veno-venous extracorporeal membrane oxygenation (VV-ECMO) is routinely initiated in patients with severe ARDS after intubation, deep sedation, and often neuromuscular blockade. During the COVID-19 pandemic, however, some centers explored an alternative strategy: awake ECMO cannulation, in which patients are cannulated while spontaneously breathing and supported without invasive mechanical ventilation. The [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1248,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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