Medical apparatus and devices for use in treating patients with fluid disorders of the vascular, interstitial and lymphatic systems including acute decompensated heart failure; Medical devices, namely,: medical catheters, balloon catheters, catheter delivery systems, stents and stent delivery systems; intra-vascular and extravascular pumping devices, devices to promote or stimulate lymph flow, lymphatic outflow depressurization devices, cardiac support devices, fluid management devices, invasive and non-invasive devices to measure pressure in the lymphatic, vascular or interstitial systems, vascular access devices, devices for treating the lymphatic system, lymphatic imaging devices, vascular imaging devices