Hemodialysis

For kidney patients on hemodialysis, it is likely for them to have high potassium level. Do you know why? What causes it? Now read on to learn more information.

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What Causes High Potassium with Kidney Hemodialysis

2019-02-27 18:06

What Causes High Potassium with Kidney HemodialysisFor kidney patients on hemodialysis, it is likely for them to have high potassium level. Do you know why? What causes it? Now read on to learn more information.

1. Hemodialysis is a kind of renal replacement therapy. One of its therapeutic purposes is to maintain electrolyte balance. Before dialysis, patients usually have high blood potassium level. The concentration of potassium in dialysate used in hemodialysis is often lower than that in plasma. In this way, the plasma potassium is cleared from the hemodialysis side to the dialysate side through the dialyzer dialysis membrane. The lower the concentration of potassium in dialysate, the stronger the removal of potassium. But it is not that the lower the potassium concentration in dialysate, the better, because when the potassium concentration in dialysate drops too low, it may lead to hypokalemia after dialysis, or blood potassium drops too fast during dialysis, which is unsafe.

2. Inadequate dialysis is another important cause of hyperkalemia. Because of economic reasons, some patients can not go to the dialysis center on time for dialysis, resulting in a long interval between dialysis; or patients with digestive tract, cerebrovascular, fundus hemorrhage and other diseases can not use heparin, resulting in blockage of filters and pipelines during hemodialysis. These conditions can lead to inadequate dialysis, that is, uremic toxins can not be adequately cleared, metabolic acidosis can not be corrected in time, resulting in hyperkalemia.

3. Before entering dialysis, in order to slow down the progress of kidney disease, doctors will recommend strict dietary restrictions. After entering hemodialysis, in order to maintain good nutritional status, doctors will advise patients to consume appropriate calorie and energy. If it is not "appropriate", hyperkalemia is more likely to occur. In order to control the intake of sodium, many patients with hypertension intentionally use low sodium salt in their daily life. Little do they know that the content of potassium ion in low sodium salt is very high, and the result is high blood potassium level.

4. Some drugs can also cause hyperkalemia. After entering dialysis, many uremic patients choose angiotensin converting enzyme inhibitors or angiotensin II receptor antagonists and spironolactone, which are aldosterone receptor antagonists, carefully to protect the heart, cerebrovascular and other organs. Because of the pharmacological effects of these drugs, hyperkalemia may occur in some uremic patients. However, it is worth noting that we should use these drugs under the guidance of doctors, and not arbitrarily increase the dosage of these drugs, nor blindly refuse them for fear of high blood potassium. In addition, some patients with severe anemia may also have hyperkalemia after repeated infusion of old hematocrit. There are also some uremic patients, in order to treat other diseases that exist at the same time, take traditional Chinese medicine decoction by themselves. Many Chinese herbal medicines have high potassium concentration, which can also lead to high blood potassium.

In conclusion, on the basis of standard hemodialysis treatment, if patients can learn more about the causes of hyperkalemia and take preventive measures through regular detection, hyperkalemia can be avoided. For more information on hemodialysis, please leave a message below or contact online doctor.

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