We are the combination of four hospitals: the General Hospital, the Children’s Hospital, the Women’s Hospital and the Traumatology, Rehabilitation and Burns Hospital. We are part of the Vall d’Hebron Barcelona Hospital Campus: a world-leading health park where healthcare plays a crucial role.
Below we will list the departments and units that form part of Vall d’Hebron Hospital and the main diseases that we treat. We will also make recommendations based on advice backed up by scientific evidence that has been shown to be effective in guaranteeing well-being and quality of life.
Would you like to know what your stay at Vall d'Hebron will be like? Here you will find all the information.
The commitment of Vall d'Hebron University Hospital to innovation allows us to be at the forefront of medicine, providing first class care adapted to the changing needs of each patient.
Haemodialysis is an extra-renal filtration procedure that replaces kidney function using an external system. It acts as a filter for the patient's blood by connecting to the patient’s circulatory system via a catheter or by being directly inserted into the vein, usually in the arm. In other cases, an arteriovenous fistula may be created, connecting an artery to a vein beneath the skin on the arm. When an artery is connected to a vein, pressure in the vein increases, strengthening the vein walls. This stronger vein is able to withstand the needles used in haemodialysis and greater blood flow is achieved.
People with kidney failure starting a haemodialysis programme typically have less than 10% of normal kidney function. Above this figure, haemodialysis is usually not necessary.
Haemodialysis must be performed regularly in four-hour sessions, usually three times a week, although the duration and frequency will depend on the patient and their circumstances.
Haemodialysis is based on biophysics in the sense that the blood passes through a filter and exchanges substances with the fluid on the other side of the filter, which is circulated by a machine. The exchange gets rids of the urea, potassium, phosphorus and other waste substances that build up due to lack of kidney function. These substances partly pass through the membrane by themselves, as there are different concentrations of the substances and they tend to equalise, and is also due to the changes in pressure exerted by the haemodialysis machine.
Possible complications of haemodialysis are the infection of the catheter or being unable to find a viable vascular access site in patients who have had dialysis for many years.
Haemodialysis may continue for years, although it is usually an intermediate step between kidney failure and transplant.
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