continuous venovenous hemofiltration

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the removal of waste products from the blood by using large amounts of ultrafiltration with reinfusion of sterile replacement fluid. See also hemoperfusion.
continuous arteriovenous hemofiltration a form of continuous renal replacement therapy consisting of hemofiltration with arteriovenous access using small-volume, low-resistance filters powered by the patient's arterial pressure, without need for a mechanical pump; used as an alternative to conventional hemodialysis in patients with acute renal failure.
continuous venovenous hemofiltration a process similar to continuous arteriovenous hemofiltration but using venovenous access and a mechanical pump.

continuous venovenous hemofiltration

Nephrology A renal replacement therapy consisting of continuous removal of ultrafiltrate at > 5 ml/min, with fluid replacement, which ultrafilters plasma, removing small and medium-sized molecules and replacing electrolytes; CVVH is used for renal failure; it is inadequate for Pts with frank renal failure. See Hemodialysis.

con·tin·u·ous ve·no·ve·nous he·mo·fil·tra·tion

(CVVH) (kŏn-tin'yū-ŭs vē-nō-vē'nŭs hē'mō-fil-trā'shŭn)
Continuous hemofiltration in which blood is pumped from a vein to the filtration unit and filtered blood is returned to the venous circulation.


An ultrafiltration technique to remove excess metabolic products from the blood. The technical aspects are similar to those of hemodialysis in that the blood flows from the patient to the hemofilter and is then returned.


Depending on the type of filter membrane used, essential materials may be removed from the blood. It is important to replace the excess crystalloids removed.

continuous arteriovenous hemofiltration

Abbreviation: CAVH
Continuous renal replacement therapy.

continuous venovenous hemofiltration

Continuous renal replacement therapy.
References in periodicals archive ?
On the basis of modality, the CRRT Market is categorized into slow continuous ultrafiltration (SCUF), continuous venovenous hemofiltration (CVVH), continuous venovenous hemodialysis (CVVHD), and continuous venovenous hemodiafiltration (CVVHDF).
On hospital day 6, he was placed on continuous venovenous hemofiltration (CVVH) to remove the ammonia from his body.
2] partial pressure; IEM, inborn error of metabolism; OTC, ornithine transcarbamylase; CVVH, continuous venovenous hemofiltration.
Effects of early high-volume continuous venovenous hemofiltration on survival and recovery of renal function in intensive care patients with acute renal failure: a prospective, randomized trial.
Impact of continuous venovenous hemofiltration on organ failure during the early phase of severe sepsis: a randomized controlled trial.
The patient was transferred to the intensive care unit and required intubation, pressor support, and continuous venovenous hemofiltration for fluid removal.
Palsson R, Laliberte KA, Niles JL: Choice of replacement solution and anticoagulant in continuous venovenous hemofiltration.
Quinine is not significantly removed by continuous venovenous hemofiltration.
Continuous venovenous hemofiltration (CVVH) is now the leading renal replacement therapy (RRT) in ICUs (Bellomo, Baldwin, Toshio, Wan, Fealy, & Ronco, 2005; Bellomo, Kellum, Mehta, Palevsky, & Ronco, 2002; Craig, 1998; Jacka, Ivancinova, & Gibney, 2005; Naka, Egi, Bellomo, Cole, French, Botha, et al.
Continuous venovenous hemofiltration improves cardiac performance by mechanisms other than tumor necrosis factor-alpha attenuation during endotoxic shock.
Bissler and his colleagues at Cincinnati Children's developed the intelligent continuous venovenous hemofiltration system to accurately measure the rate of fluid extraction from the patient's blood and automatically compensate for variations in parameters that can have an adverse affect on the treatment process.
Regional citrate anticoagulation in continuous venovenous hemofiltration in critically ill patients with a high risk of bleeding.

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