An apparatus is provided which allows a subject to determine by himself/herself whether or not he/she has a status apt to develop a deep-vein thrombosis in a region of lower limb in a simple manner. A subject is instructed to change his/her body orientation. By measuring the bioelectric impedance at this time, a transfer of body fluid (blood) within the body can be captured. A variation between the bioelectric impedance values measured respectively before and after a posture change is compared with a reference value. Alternatively, a blood storage capacity of the lower limb region may be estimated from a gradient of bioelectric impedance represented by a variation thereof per unit time so as to determine whether or not the subject has the status apt to develop the deep-vein thrombosis in the lower limb region.
展开▼
