continuous venovenous hemodialysis

Hemodialysis is a method of purifying blood by creating a circuit of extra-corporeal circulation and its path in a dialyzer. There are several types:

* Hemodialysis;
* The haemofiltration;
* The haemodiafiltration.

In hemodialysis, it circulates in the blood capillaries that bathed in a fluid called dialysate, generated by a machine which is chemically similar to the composition of a healthy plasma, without waste. The exchanges are in the semi-permeable membrane of the dialyzer.

This allows 3 things vital for the patient with renal failure:

* Remove blood waste produced by food;
* Balance the blood electrolyte balance;
* Remove excess water.

In a healthy, this is normally done by the kidneys 24/24. However, renal kidney no longer functional. Hemodialysis is thus replacing, at an average of 3 sessions per week 4h.

This treatment will continue for life or until a kidney transplant.

Conduct a hemodialysis session
The chronic renal terminal patients treated with hemodialysis n'urinent more or very little. They therefore accumulate water they ingested through food (water, soup, coffee, yogurt, etc ...) and organic waste that are no longer filtered. It is this excess water and wastes which are disposed of through hemodialysis. If we do not, some of this water passes into the bloodstream, increases the volume increases the pressure (hypertension) and edema until poumon.Les waste acute blood poisoning.

It weighs so the patient's arrival. Comparing the weight of arrival and its ideal weight defined by the doctor after various examinations (radio chest, a cardiac ultrasound, a blood test) to the prescription of PPT (Total weight). Thanks to technical proficiency ultrafiltration, installed on the dialysis machine, filtering will be accomplished either by a continuous weight loss Hours (PPH) constant or filtration according to a prescribed profile.

Hemodialysis at home
The patient may install home hemodialysis machine and can manage its own meetings. This modality, relatively common in the 1970s, has since become much rarer in the world while it has advantages both in terms of quality of life, health, allowing for more dialysis frequent and / or more prolonged.(W3C)

Read also Blood Transfusion