Outcome data will be collected using our electronic medical records. The primary marker will be the heart failure clinicians' evaluation surveys on the hemodynamic device. Secondary markers will include: patient comfort survey results, heart failure classification, renal function, blood pressure, cardiac function tests, and pulmonary function tests. Patients' medical records will reviewed for up to six months after consent secondary to ensure that all relevant cardiac and pulmonary function tests are captured to correlate to the data from the Nexfin system.