Fig. 4.
Impella (Abiomed Inc., USA) placement. (A) The Impella 5.5 should be inserted 5.0 cm into the left ventricle, measured from the aortic valve annulus (dashed line). A midesophageal long-axis view is shown. (B) The Impella CP should be inserted 3.5 cm into the left ventricle (dashed line). A parasternal long-axis view is shown.