A model for estimating post-dilution hematocrit with minimal blood loss

A hematocrit estimator model (HEM) for post dilutional hematocrit prior to cardiopulmonary bypass is presented. The estimator model was tested on 75 adult patients, whose ages range from 36–81 years with a median age of 62.4, undergoing cardiopulmonary bypass. The estimator model allows an accurate and efficient determination of the hematocrit, after the patient receives large volumes of non-heamic fluid, based on a retrospective analysis of our patient database.