Abstract
We monitored hematocrit continuously using CRIT-LINE in 35 patients. A significant correlation existed between hematocrit (Hct) obtained by automated blood cell counter and it measured by CRIT-LINE. There were three patterns in blood volume changes (ΔBV) obtained by CRIT-LINE, which could be classified as follows; The group A consisted of 26 patients, where time-coursed slope of ΔBV was down-ward. The slope (ΔBV/Hours) of the approximated straight line was constantly negative in ΔBV. The group B was composed of 5 patients and the time-coursed slope of ΔBV was upward. The slope was always positive. The group C included 4 patients, and its slope appeared to be positive to negative. It was considered that the patients in group B were overhydrated and those in group A or C could probably achieve their adequate body weights (BW) after HD. In 3 patients who underwent surgery under general anesthesia, we determined specific -ΔBV% levels in their preoperative periods. After surgery, HD could be conducted safely without measuring their BW before and after HD.
