Hemodialysis method
First Claim
1. A dialysis method based upon urea kinetic analysis, said method comprising measuring urea concentration, determining a preferred post-dialysis urea concentration from an initial urea concentration and a value for the proportion of urea remaining based upon a prescribed value for Kt/V, where K is the dialyzer urea clearance (mls/minutes), where t is time (minutes) and where V is volume of distribution for urea (mls), predicting a time endpoint for dialysis based upon said preferred post-dialysis urea concentration, and upon measured urea concentration values and the respective times of dialysis, measuring urea concentration at about said predicted time endpoint, and comparing the urea concentration at about said predicted time endpoint with said preferred post-dialysis urea concentration to determine whether the prescription has been satisfied.
1 Assignment
0 Petitions
Accused Products
Abstract
A dialysis method based upon urea kinetic analysis is provided. An objective of the method is to provide guaranteed dose hemodialysis by optimization of each dialysis treatment. The method does not rely upon dialysis treatments equal in time. The method includes determining a preferred post-dialysis urea concentration for a patient and predicting a time endpoint for the dialysis. Computer automation makes the method advantageous in a large, busy dialysis center.
-
Citations
14 Claims
- 1. A dialysis method based upon urea kinetic analysis, said method comprising measuring urea concentration, determining a preferred post-dialysis urea concentration from an initial urea concentration and a value for the proportion of urea remaining based upon a prescribed value for Kt/V, where K is the dialyzer urea clearance (mls/minutes), where t is time (minutes) and where V is volume of distribution for urea (mls), predicting a time endpoint for dialysis based upon said preferred post-dialysis urea concentration, and upon measured urea concentration values and the respective times of dialysis, measuring urea concentration at about said predicted time endpoint, and comparing the urea concentration at about said predicted time endpoint with said preferred post-dialysis urea concentration to determine whether the prescription has been satisfied.
-
12. An automated dialysis method based upon urea kinetic analysis, said method comprising measuring urea concentration in response to a microprocessor-activated signal;
- effecting a microprocessor-based determination of a preferred post-dialysis urea concentration from an initial urea concentration and a value for the proportion of urea remaining based upon a value for Kt/V, where K is the dialyzer urea clearance (mls/minutes), where t is time (minutes) and where V is volume of distribution for urea (mls);
effecting a microprocessor-based prediction of a time endpoint for dialysis based upon said preferred post-dialysis urea concentration, and upon measured urea concentration values and the respective times of dialysis;
measuring urea concentration at about said predicted time endpoint; and
carrying out a microprocessor-based comparison of the urea concentration at about said predicted time endpoint with said preferred post-dialysis urea concentration. - View Dependent Claims (13, 14)
- effecting a microprocessor-based determination of a preferred post-dialysis urea concentration from an initial urea concentration and a value for the proportion of urea remaining based upon a value for Kt/V, where K is the dialyzer urea clearance (mls/minutes), where t is time (minutes) and where V is volume of distribution for urea (mls);
Specification