Kt/V. In medicine, Kt/V is a number used to quantify hemodialysis and peritoneal dialysis treatment adequacy. In the context of hemodialysis, Kt/V is a pseudo-dimensionless number; it is dependent on the pre- and post-dialysis concentration (see below). It is not the product of K and t divided by V, as would be the case in a true dimensionless number. In peritoneal dialysis, it isn't dimensionless at all.
recovery - the act of regaining or saving something lost (or in danger of becoming lost) retrieval human action, human activity, act, deed - something that people do or cause to happen
Many experience a reasonable recovery with recovery defined as the relative absence of orthostatic symptoms alone with the ability to perform the activities of daily living with minimal restriction, while in others the condition persists indefinitely.