continuous venovenous hemofiltration

hemofiltration

 [he″mo-fil-tra´shun]
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.

hemofiltration

(he?mo-fil-tra'shun)
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.

CAUTION!

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 ?
Based on modality, the market is segmented into slow continuous ultrafiltration (SCUF), continuous venovenous hemofiltration (CVVH), continuous venovenous hemodialysis (CVVHD), and continuous venovenous hemodiafiltration (CVVHDF).
He required continuous venovenous hemofiltration, during which time anticoagulation was switched to unfractionated heparin.
There is a case report and a case series where multiorgan involvement was present and plasma exchange was used with continuous venovenous hemofiltration (CVVHF) to assist recovery [23, 24].
The treatment parameters were set to postdilution fluid replacement for continuous venovenous hemofiltration (CVVH) with blood flow of 130mL/min, substitution flow of 1800 mL/h, and ultrafiltration flow of 0 mL/h.
Regional citrate anticoagulation in continuous venovenous hemofiltration in critically ill patients with a high risk of bleeding.
Serum cytokine level during continuous venovenous hemofiltration in toxic shock-like syndrome due to group G beta Streptococcus bacteremia in a patient with idiopathic thrombocytopenic purpura.
The patient had been on continuous venovenous hemofiltration for a 48-hour period to reduce elevated leucine levels.
Continuous venovenous hemofiltration was initiated for management of anasarca and anuria.

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