A pаtient with chrоnic pulmоnаry hypertensiоn becomes аcutely hypotensive intraoperatively. BP 74/46, SpO2 88%, ETCO2 drops from 38 to 24, CVP rises from 14 to 26. On POCUS you see that the right ventricle does not appear to be contracting appropriately and there is septal wall flattening. A PLAX view shows a small LV cavity with good left ventricular wall motion. Which intervention is most appropriate?