Study for the Evaluation of a Non-invasive Hemodynamic Measurement in Heart Failure Patients

"* Measuring device: non-FDA-cleared patient monitor (740E, Zoe Medical, MA, US), which has software to measure ezCVP.~* Sensor: an FDA-cleared pulse oximeter sensor for adults (K012891: DS-100A, Nellcor, CA, US).~* Cuff: an FDA-cleared NIBP cuff for adults (K080342: YP-713T, YP-714T or TP-715T, Nihon Kohden Corporation, Tokyo, Japan)."