Abstract
PurposeProper cannula positioning in single site veno-venous extracorporeal life support (vv-ELS) is cumbersome and necessitates image guidance to obtain a safe and stable position within the heart and the caval veins. Importantly, image-guided cannula positioning alone is not sufficient, as possible recirculation cannot be quantified.Methods and resultsWe present an ultrasound dilution technique allowing quantification of recirculation for optimizing vv-ELS.ConclusionWe suggest quantification of recirculation in addition to image guidance to provide optimal vv-ELS.
Highlights
Recirculation is defined as the fraction of the oxygenated blood that exits the infusion port, and which is immedi
Vv-ELS in adult transoesophageal echocardiography combined with fluopatients has required dual cannulation
We describe three cases to illustrate the benefits of a Support, can be negatively influenced by technique for the quantification of recirculation as an recirculation as a result of improper cannula position [4]. adjuvant to transthoracic echocardiography during Veno-venous extracorporeal life support (vv-ELS)
Summary
Recirculation is defined as the fraction of the oxygenated blood that exits the infusion port, and which is immedi-Veno-venous extracorporeal life support (vv-ELS) has ately drained back into the drainage ports. Keywords Veno-venous extracorporeal life support Á Recirculation Á Echocardiography Á Dual-lumen cannula Á Ultrasound dilution The and decapneization, quantification of recirculation may be cannula simultaneously drains blood from the superior crucial in correctly (re)positioning of the dual-lumen and the inferior caval vein.
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