What is the difference between hemodialysis and peritoneal dialysis?

Hemodialysis filters blood through an external machine with a semipermeable membrane, typically performed three times per week for three to four hours each session at a dialysis center. It requires vascular access through an arteriovenous fistula, graft, or central venous catheter. Peritoneal dialysis uses the patient's peritoneal membrane as the filter, with dialysate solution instilled into the abdominal cavity through a permanent catheter, allowed to dwell, then drained. It can be performed at home continuously or overnight.