Peritoneal DialysisPeritoneal dialysis (PD) is a type of renal replacement therapy where the peritoneal cavity becomes the reservoir for the dialysate. The peritoneum acts as the semipermeable membrane where excess body fluid and solutes (electrolytes, urea, glucose, albumin) are removed.1 Fluid is introduced through a permanent tube in the abdomen and flushed out either nightly (automatic PD) or regular exchanges throughout the day (continuous ambulatory PD).1
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HemodialysisHemodialysis (HD) is a type of renal replacement therapy where toxins and waste are removed from the blood by a semipermeable membrane and dialysis fluid. A patient spends 3-4 hours three times a week hooked up to the machine. The blood leaves the patient and enters the machine through one tube, passes through the filter containing the semi-permeable membrane and dialysis fluid and then the pure blood returns back into the patient. There are 3 primary ways to gain access to the blood; an intravenous catheter, an arteriovenous fistula and a synthetic graft. 1
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References
1. Schoch L & Martin L. (2009). Case Study: Chronic Kidney Disease (CKD) treated with Dialysis. 2009. Web. 11 Jan 2013 <http://www.slideshare.net/lusimartin/kidney-disease-case-study>
1. Schoch L & Martin L. (2009). Case Study: Chronic Kidney Disease (CKD) treated with Dialysis. 2009. Web. 11 Jan 2013 <http://www.slideshare.net/lusimartin/kidney-disease-case-study>