Continuous Blood Purification Therapy
Continuous Renal Replacement Therapy (CRRT) is any extracorporeal blood purification designed to substitute
for impaired renal function over an extended period, and intended to be applied for up to 24 hours a day.
This technology is one part of immunoadsorption-focused blood purification in Peking Tung Shin Tang Chinese
1. Continuous Blood Purification Therapy has been commonly used in our hospital.
● Continuous Vessels (Arteries)- Venous Hemofiltration(CV(A)VH)-mainly used to remove excessive fluid and
bigger molecular material.
● Continuous Vessels (Arteries)- Venous Hemodialysis (CV(A)VHD)-mainly used for patients need remove large
amount of small molecular material in high catabolism.
●Continuous Vessels (Arteries)- Venous Hemodialysis and Filtration (CV(A)VHDF)-mainly used to remove
inflammatory mediators and midium and micro-molecular substances. It is suitable for patients in acute
inflammatory reaction stage of renal fibrosis.
2. The features of Continuous Blood Purification Therapy.
■ Effect on hemodynamics.
Compared with traditional dialysis, the prominent advantage of CRRT is to maintain stable mean arterial
pressure and effective renal blood perfusion.
■ Effect on intracranial pressure.
Acute encephaledema caused by various reasons is often accompanied by Acute Renal Failure. Giving
conventional dialysis treatment is very likely to cause imbalance syndrome and aggravate encephaledema. CRRT
can maintain the stableness of intracranial pressure and ensure good cerebral perfusion.
■ Compared with traditional dialysis, CRRT can control azotemia level continuously and steadily.
■ In cases of water, electrolyte, acid-base balance, and severe water and sodium retention accompanied by
obvious organ edema, CRRT can remove water and sodium steadily and effectively without changes of osmotic
pressure. It can remove tissue edema effectively, strengthen cardiac muscle contraction and remit pulmonary
edema. It can also improve the function of the main organs such as heart, lung, liver, kidney, the stomach
and intestine, etc.