Continuous Ambulatory Peritoneal Dialysis (CAPD) is the most common method of peritoneal dialysis. Approximately every 4-6 hours an "exchange" takes place in any location that is clean and well-lit. This type of dialysis does not require any type of mechanical equipment. You can be trained to perform this exchange by yourself, by connecting the tube that is a attached to a new bag of fluid to your catheter. The fluid enters your abdomen and stays there until you empty it approximately 4-6 hours later.