Claims
- 1. In the hemodialysis of blood by circulation of a dialysis solution in molecular exchange relation with blood to reduce the osmolality of the blood, the improvement comprising:
- initiating the hemodialysis with a dialysis solution having an osmolality of the order of the osmolality of the patient's blood; and
- thereafter varying the osmolality of the dialysis solution as a function of time to achieve the desired osmolality for the patient's condition.
- 2. The hemodialysis method of claim 1 in which the osmolality of the dialysis solution is reduced continuously with time.
- 3. The hemodialysis method of claim 1 including the steps:
- establishing upper and lower conductivity limits for the dialysis solution;
- varying both limits in accordance with the variation of the conductivity of the dialysis solution as the osmolality thereof is changed; and
- initiating an alarm in the event the conductivity of the dialysis solution is outside said upper and lower conductivity limits.
- 4. The hemodialysis method of claim 3 in which the osmolality of the dialysis solution is reduced linearly with time and the upper and lower conductivity limits are reduced linearly with time.
- 5. In the hemodialysis of blood by circulation of a dialysis solution in molecular exchange relation with blood to reduce the osmolality of the blood, the improvement comprising:
- mixing a concentrated dialysis solution with water for circulation of the dialysis solution mixture through a dialyzer;
- establishing an initial concentration of said dialysis solution mixture having an osmolality of the order of the osmolality of the patient's blood;
- reducing the concentration of the dialysis solution mixture as a function of time;
- measuring the conductivity of the dialysis solution mixture;
- establishing initial upper and lower conductivity limits;
- reducing said upper and lower conductivity limits as a function of time;
- comparing the dialysis solution mixture conductivity with said upper and lower conductivity limits; and
- initiating an alarm if the dialysis solution mixture conductivity is below the lower limit or above the upper limit.
- 6. The hemodialysis method of claim 5 in which the concentration of the dialysis solution mixture and the upper and lower conductivity limits are reduced continuously as a function of time.
Parent Case Info
This is a continuation of application Ser. No. 95,468 filed Nov. 19, 1979, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4153554 |
von der Heide et al. |
May 1979 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
2825134 |
Dec 1978 |
DEX |
Non-Patent Literature Citations (2)
Entry |
Lai et al., "Third Generation Artificial Kidney: pH and Concentration Control", from vol. XXI, Trans. Amer. Soc. Artif. Int. Organs, 1975, pp. 346-352. |
Zelman et al., "Augmentation of Peritoneal Dialysis Efficiency with Programmed Hyper/Hypoosmotic Dialysates", from vol. XXIII, Trans. Am. Soc. Artif. Intern. Organs, 1977, pp. 203-209. |
Continuations (1)
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Number |
Date |
Country |
Parent |
95468 |
Nov 1979 |
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