Tolerability and Safety of CARDIOMEMS™ Intracardiac Continuous Cardiac Hemodynamic Monitoring Device in Patients with Cardio Renal Syndrome with Severe Renal Impairment

The initial routine workup includes a nephrological evaluation: mGFR with Iohexol before fitting the CARDIOMEMS™ HF device, renal echo-Doppler, urinary sedimentation, etiological assessment of severe Chronic Kidney Disease, NT-ProBNP, impedancemetry, urinary ionogram, weight, anemia assessment, and correction of possible iron and/or vitamin deficiency and a cardiology evaluation: blood pressure, heart rate, clinical data, biology (Complete Blood Count, iono, urea, creatinine, total bilirubin, ferritin, CST), echocardiography (Left Ventricle Ejection Fraction, E/A, E/e', indexed volume of the left atrium, Tricuspid Annular Plane Systolic Excursion, Tissue Doppler S-wave, surface area of the right atrium, Systolic Pulmonary Artery Pressure, Right Atrial Pressure). The device will be implanted in the selected patients by Pr François Roubille at Montpellier University Hospital within 1 month of the pre-inclusion visit. It will monitor their pulmonary artery pressure.