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
restore. The transitive use of recover in the sense of cure, heal, etc., as in 2 Kings v, 6, That thou mayest recover him of his leprosy, is now practically obsolete. The chief transitive use of recover is in the sense to obtain again after losing, regain, repossess, etc.; as, to recover stolen goods; to recover health.