Slow, continuous ultrafiltration uses arteriovenous access and the patient's blood pressure to circulate blood through a hemofilter.
Because the goal is fluid removal, the patient doesn't receive replacement fluids.
Continuous arteriovenous hemofiltration also uses the patient's arterial blood pressure to deliver blood to a low-resistance hemofilter.
To maintain hemofilter patency and systemic blood pressure, the patient receives replacement fluids.
continuous venovenous hemofiltration evolved from SCUF and CAVH. A doublelumen catheter provides access to a vein, and a pump moves blood through the hemofilter.