{"id":19364,"date":"2024-02-21T11:43:19","date_gmt":"2024-02-21T04:43:19","guid":{"rendered":"https:\/\/abdiwaluyo.com\/?p=19364"},"modified":"2024-05-02T12:00:44","modified_gmt":"2024-05-02T05:00:44","slug":"hemodialysis-for-24-hours-get-to-know-what-continuous-veno-venous-hemofiltration-cvvh-is","status":"publish","type":"post","link":"https:\/\/abdiwaluyo.com\/en\/health-info\/hemodialysis-for-24-hours-get-to-know-what-continuous-veno-venous-hemofiltration-cvvh-is\/","title":{"rendered":"Hemodialysis for 24 Hours? Get to Know What Continuous Veno-Venous Hemofiltration (CVVH) Is!"},"content":{"rendered":"

By:\u00a0 Thalia Kaylyn Averil<\/strong><\/em><\/span><\/p>\n

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Continuous Veno-Venous Hemofiltration (CVVH) is performed for the short-term treatment of kidney failure. In general, patients who experience kidney failure will undergo hemodialysis, but CVVH may be needed as a backup if the patient has contraindications to hemodialysis. Patients with unstable acute renal failure can also be treated temporarily with CVVH. CVVH is usually used until the patient’s kidney function returns to normal or until hemodialysis can be started.<\/span><\/p>\n

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What are the differences between hemodialysis and Continuous Veno-Venous Hemofiltration (CVVH)?<\/span><\/p>\n\n\n\n\n\n\n
Hemodialysis<\/b><\/td>\nCVVH<\/b><\/td>\n<\/tr>\n
Hemodialysis is usually carried out for several hours, with a frequency of approximately three times a week.<\/span><\/td>\nCVVH is a continuous therapy conducted for 24 hours.<\/span><\/td>\n<\/tr>\n
Hemodialysis is less effective at removing excess fluid and dissolved substances from the body.<\/span><\/td>\nCVVH is more effective at removing excess fluid and solutes from the body than hemodialysis.<\/span><\/td>\n<\/tr>\n
Hemodialysis cannot be performed on patients with unstable hemodynamic conditions because it can cause hemodynamic instability.<\/span><\/td>\nCVVH causes fewer hemodynamic changes and is thus better tolerated by hemodynamically unstable patients.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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The catheter used during the CVVH procedure has two different routes. The dialysis catheter will be inserted into one of the body’s main veins, such as the femoral vein, jugular vein, or subclavian vein, because CVVH requires adequate vascular access. Blood enters the CVVH machine after the blood exits the catheter through pumping. Inside the machine, blood passes through a semipermeable membrane so that water and dissolved substances, such as waste products, can be removed. However, blood cells and larger molecules are retained. Next, fluids and electrolytes will be replaced with replacement fluid in the form of dialysate solution, thus regulating fluid balance and correcting electrolyte imbalances. In the end, the patient’s filtered blood will be returned to the body using a catheter. During the CVVH procedure, anticoagulants are needed to prevent blood clots. The duration of CVVH varies depending on the patient’s condition and the patient’s response to treatment. The CVVH procedure is usually performed for 24 hours. Other studies show that CVVH is usually performed until hemodialysis can be performed or the patient’s kidney function returns to normal.<\/span><\/p>\n

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Figure 1. Illustration of the working mechanism of Continuous Veno-Venous Hemofiltration (CVVH).<\/p><\/div>\n

CVVH can be used for patients experiencing acute renal failure, sepsis, septic shock, and multiple organ failure. Apart from that, CVVH can also be used for patients with unstable hemodynamics, including low blood pressure, heartbeat that is too fast or slow, weak or non-palpable pulse, cold skin, reduced urine production, or changes in mental status. However, CVVH is contraindicated in the following patients:<\/span><\/p>\n