Principle of peritoneal dialysis
Feb 26, 2023
Source: Cainiu Health
Dr. Zhao Xinju
Introduction
The principle of peritoneal dialysis treatment involves using the peritoneum as a semipermeable membrane and utilizing changes in osmotic pressure to facilitate the exchange of solutes and water. Additionally, when patients experience reduced outflow volume during peritoneal dialysis, they should pay attention to controlling their intake of fluids and salt, maintain a light diet, avoid high-fat and high-calorie foods, and consume more nutritious fruits and vegetables.
Peritoneal dialysis works by using the peritoneum as a semipermeable membrane, enabling the exchange of solutes and water through changes in osmotic pressure.
Peritoneal dialysis is a form of renal replacement therapy for kidney failure. Its basic principle involves infusing dialysis solution into the patient's abdominal cavity via a catheter, utilizing the omentum as the organ for dialytic exchange. Excess fluid and toxins from the body are transferred into the dialysate within the abdominal cavity, which is then drained out, completing one cycle of peritoneal dialysis. If there is reduced outflow of dialysate, it may be due to decreased function of the omentum, requiring an increase in the frequency of dialysis sessions. Alternatively, it could be related to the concentration of the dialysis solution, in which case increasing the solution's concentration may be necessary.
In addition, when patients experience reduced outflow volume during peritoneal dialysis, they should carefully control their intake of fluids and salt. Their diet should be light, avoiding high-fat and high-calorie foods, while including more nutritious fruits and vegetables to prevent weight gain and complications such as edema and chest tightness. Adequate rest is important, overexertion should be avoided, and a positive mental state should be maintained.
If reduced dialysate outflow occurs, prompt medical evaluation at a hospital is recommended.
