Peritoneal Dialysis

In this method, the abdomen of the patient acts as semipermeable membrane. A catheter is inserted into the abdomen. Around 1.5 to 2 liters of dialysate solution is passed into the abdomen cavity. The process of diffusion takes place for 30 minutes, after which the dialysate solution is removed from the abdomen. The same procedure continues for 20 to 30 times to remove all the wastage from the body. In the entire process, temperature has to be maintained at 37oC for which thermistor can be used. To monitor the volume of dialysate solution, a timing circuit is used. For example, it stops the circuit if more than 2 liters of dialysate solution passes into the peritoneal cavity.

The timing circuit also helps to monitor the diffusion rate. As already said, diffusion process happens for 30 minutes. If the timing of diffusion increases, the timing circuit gives an indication to stop the process. A suction pump is used to remove the dialysate solution from the abdomen cavity. After this process, fresh and new dialysate solution passes to the abdomen cavity. Quantity of 2 litre of dialysate is removed from the patient body. If suppose the quantity is less, alarm of the timing circuit is activated. This helps doctors to monitor the patient at a regular basis.
peritoneal dialysis

Difference Between Haemodialysis and Peritoneal Dialysis

Extra Corporeal Dialysis
Intra Corporeal Dialysis
(Peritoneal Dialysis)
1In this method, blood is purified using hemodialyser, which acts as artificial kidney. Blood is removed from the body. Waste products diffuse through the semi – permeable membrane. They are continuously rinsed with dialysate solution.In this method, the abdomen of the patient acts as semi permeable membrane. The dialysate solution passes through it to remove the waste from the blood.
2It is more efficiently used for waste removal.It is comparatively less efficiently used.
3Since blood is taken out from the body, the process is little complex and risk.It does not involve removal of blood, so simple and risk free.
4The time taken for dialysis is 3 to 6 hours.The time taken for dialysis is 9 to 12 hours.

About Vidya Muthukrishnan

Ms M.Vidya has been teaching professionally for the past 5 years, and is currently employed as an Assistant Professor in the Department of Instrumentation and Control Engineering at the Sri Krishna College of Technology. She has completed her B.Tech Electronics and Instrumentation from SASTRA University and M.Tech in Biomedical Engineering from VIT University Vellore.

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