Hemodialysis treatment apparatus and method for hemodialysis treatment

1. A hemodialysis treatment apparatus comprising:

a circulating blood volume variation rate detecting device configured to detect a circulating blood volume variation rate of a patient in a time-course of a hemodialysis treatment;

a vital sign detecting device configured to detect a vital sign value of the patient in the time-course of the hemodialysis treatment;

a memory storing a previous circulating blood volume variation rate of the patient in a time-course of a previous hemodialysis treatment; and

a display provided with a screen and configured to display the circulating blood volume variation rate and the previous circulating blood volume variation rate in a same grid and the vital sign value in a separate grid on the screen along at least one time scale, the hemodialysis treatment apparatus dialyzing and ultrafiltrating extracorporeally circulating blood of the patient to perform the hemodialysis treatment.

2. The hemodialysis treatment apparatus according to claim 1 , further comprising:

a hemodialysis condition detecting device configured to detect a hemodialysis condition value in the time-course of the hemodialysis treatment, the hemodialysis condition relating to hemodialysis and ultrafiltration in the hemodialysis treatment, wherein

the screen displays the hemodialysis condition value together with the circulating blood volume variation rate and the vital sign value, along the at least one time scale.

3. The hemodialysis treatment apparatus according to claim 2 , wherein:

the at least one time scale is at least one time axis horizontally positioned in at least one grid; and

the screen displays the circulating blood volume variation rate, the vital sign value and the hemodialysis condition value in graphs, along the at least one time axis in the at least one grid.

4. The hemodialysis treatment apparatus according to claim 3 , wherein the screen displays at least two of the circulating blood volume variation rate, the vital sign value and the hemodialysis condition value in graphs, along a single time axis horizontally positioned in a single grid.

5. The hemodialysis treatment apparatus according to claim 4 , wherein the screen displays all of the circulating blood volume variation rate, the vital sign value and the hemodialysis condition value in graphs, along a single time axis horizontally positioned in a single grid.

6. The hemodialysis treatment apparatus according to claim 1 , wherein the screen displays an occurrence of an external event affecting the hemodialysis treatment for the patient so that the occurrence is compared to the circulating blood volume variation rate and the vital sign value displayed on the screen.

7. The hemodialysis treatment apparatus according to claim 1 , wherein the screen displays, along the at least one time scale, the prior detected circulating blood volume variation rate together with the circulating blood volume variation rate and the vital sign value detected in a time-course of a current hemodialysis treatment.

8. The hemodialysis treatment apparatus according to claim 7 , wherein:

an ideal range of the circulating blood volume variation rate in the current hemodialysis treatment is obtained based on the prior detected circulating blood volume variation rate; and

the screen displays, along the at least one time scale, a maximum value and a minimum value of the ideal range together with the circulating blood volume variation rate and the vital sign value detected in the time-course of the current hemodialysis treatment.

9. The hemodialysis treatment apparatus according to claim 1 , wherein the previous circulating blood volume variation rate is at least one of a maximum value and minimum value.

10. A method for hemodialysis treatment, comprising the steps of:

dialyzing and ultrafiltrating extracorporeally circulating blood of a patient to perform a hemodialysis treatment;

detecting a circulating blood volume variation rate of the patient in a time-course of the hemodialysis treatment;

detecting a vital sign value of the patient in the time-course of the hemodialysis treatment;

retrieving, from a memory, a previous circulating blood volume variation rate of the patient in a time-course of a previous hemodialysis treatment and

displaying the circulating blood volume variation rate and the previous circulating blood volume variation rate in a same grid and the vital sign value in a separate grid on a screen of a display along at least one time scale.