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Dialysis And Low Blood Pressure

2013-03-24 14:35

dialysis low blood pressureDialysis especially hemodialysis is one of the important treatments for end stage renal failure patients. Adequate dialysis can not only prolong the patient’s life expectancy but also can improve the patient’s nutritional states and life quality.

However dialysis can cause many complications and side effects among which lowe blood pressure is more common. Low blood pressure during dialysis severely affect the effects of dialysis or even threaten the patient’s life. Therefore it is very important to know why dialysis cause low blood pressure and how to prevent and treat low blood pressure.

Why dialysis cause low blood pressure?

There are several factors that can cause low blood pressure. Too much gain of body weight during two dialysis sessions can increase ultrafiltration and reduce blood volume and cause low blood pressure. Besides, hyponatremia (low blood sodium), heart insufficiency, vascular damages, fluctuating blood pressure, having foods or taking high blood pressure medicines during dialysis, elderly patients and diabetes patients are all susceptible factors of low blood pressure.

How to treat low blood pressure due to dialysis?

Typical symptoms of low blood pressure include nausea, vomiting, sweating, palpitation, chest tightness, shortness of breath, paleness, difficulty in breathing, restless, blurred vision, etc.

If dialysis patients begin to have these signs and discomforts, proper treatment should be sought as soon as possible.

Proper diets: dialysis can cause the loss of proteins and other nutritions, therefore patients should have proper increase of protein intake. A high-calory, high-vitamin, high-calcium, low-fat, low-phosphorus diet is recommended to dialysis patients.

Control body weight between dialysis sessions: limit the intake of sodium and water to reduce fluid overload because patient will have to wait for the next dialysis to remove excess water. Too much gain of body weight can increase the difficulty of dialysis and the risk of low blood pressure.

If the condition is very critical, ultrafiltration should be stopped and saline or plasma substitute will be injected. Symptoms will be relieved after the injection.

How to prevent low blood pressure during and after dialysis?

According to individual differences, personalized dialysis should be designed.

If patients have serious hypoproteinemia, albumin or plasma will be injected during dialysis to increase colloid osmotic pressure.

If patients have serious anemia, blood substitute can be injected.

If patients have cardiovascular problems, some drugs that can help improve cardiovascular functions can be given under the doctor’s permission and guidance.

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