Abstract
Mechanical supports, such as ECMO, are aimed mostly to ensure organ perfusion during profound cardiogenic shock, but also adequate left ventricle (LV) rest, allowing recovery of stunned myocardium and relieving shear stress from the newly necrotic area. For a combination of severe myocardial dysfunction and the adjunctive afterload, due to retrograde flow from the arterial cannula and inadequate RV drainage and bronchial circulation, LV end-diastolic, left atrium, and pulmonary pressure could dangerously rise, causing progressive dilatation of the LV, remodeling and worse systolic performance, increased wall stress, and myocardial oxygen consumption. It is mandatory, therefore, to establish adequate LV decompression, to improve symptoms, such as pulmonary edema, hemoptysis, and pulmonary hemorrhages potentially leading to irreversible pulmonary failure. This goal may be achieved by means of optimal medical treatment (combination and careful titration of inotropes and vasopressors) and by mechanical decompression (IABP, different venting strategies, impeller axial pumps).
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Greco, G., Cortinovis, B., Avalli, L. (2014). Left Ventricular Rest and Unloading During VA ECMO. In: Sangalli, F., Patroniti, N., Pesenti, A. (eds) ECMO-Extracorporeal Life Support in Adults. Springer, Milano. https://doi.org/10.1007/978-88-470-5427-1_17
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DOI: https://doi.org/10.1007/978-88-470-5427-1_17
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