Hemodynamic Assessment of the Right Ventricle Using Pressure-volume Loop Catheter and Pulmonary Artery Catheter in Patients Undergoing Left Ventricular Assist Device Placement

Inclusion Criteria: \- Patients undergoing left ventricular assist device (LVAD) placement at the University of Minnesota Medical Center Exclusion Criteria: * Patients with a history of internal jugular vein thrombosis or known reasons for not being able to thread a central venous catheter through either internal jugular vein * Patients with a history of known esophageal strictures, esophageal or stomach cancer, esophageal varices, or any patient in whom a TEE is contraindicated * Patients with permanent pacemakers whose right ventricle is being paced and not in normal sinus rhythm * Patients unable to consent to participating in the study * Patients who are pregnant will be excluded, as part of standard care, all female patients are screened for pregnancy prior to surgery.