Kidney Dialysis Research Task
Kidney Dialysis
There are two types of kidney dialysis: Haemodialysis and Peritoneal dialysis
Both types carry out the function of the kidney: filtering our blood of metabolic wastes.
Kidney dialysis is necessary when someone suffers kidney failure. Failed kidneys cant perform their excretory function, but also cant regulate ion concentration, PH levels, and blood volume.
Haemodialysis: (carried out 4 hrs every 2-3 weeks)
-patient is connected to dialysis machine by two thing needles inserted into (created) AV fistula
-one needs slowly removes blood and transfers it to dialysis machine
-the dialysis machine is made up of a system of tubes, these tubes are submerged in dialysate (liquid with same concentration as blood plasma)
-since the concerntration of the metabolic waste in the blood is higher than in the dialysate, the metabolic waste moves into the dialysate (by diffusion through semi-permeable membrane)
-the dirty dialysate must be constantly pumped out and replaced with clean liquid so the concentration gradient for such diffusion to occur remains the same
disadvantages:
-restricts mobility
-only limited wastes can be removed, therefore patients must go on diet to avoid accumulation of substances such as sodium phosphate and potassium ions
-some people experience symptoms of nausea, dizziness and cramps during procedure
Advantages:
-only occurs 2-3 week instead of continuously
-no equipment needed to be kept at home
-nurses and technicians perform treatment for patient
Peritoneal Dialysis:
-incision is made in patients abdomen and a piece of equipment called Tenckhoff catheter is inserted into incision
-dialysate moves through catheter into the abdomen (up to 2.5 litres of it)
-dialysate remains in the abdomen whilst metabolic waste products diffuse across the peritoneum from the underlying blood vessels
-the dirty dialysate is drained and replaces with fresh fluid Automates peritneal dialysis (APD) occurs automatically during the
There are two types of kidney dialysis: Haemodialysis and Peritoneal dialysis
Both types carry out the function of the kidney: filtering our blood of metabolic wastes.
Kidney dialysis is necessary when someone suffers kidney failure. Failed kidneys cant perform their excretory function, but also cant regulate ion concentration, PH levels, and blood volume.
Haemodialysis: (carried out 4 hrs every 2-3 weeks)
-patient is connected to dialysis machine by two thing needles inserted into (created) AV fistula
-one needs slowly removes blood and transfers it to dialysis machine
-the dialysis machine is made up of a system of tubes, these tubes are submerged in dialysate (liquid with same concentration as blood plasma)
-since the concerntration of the metabolic waste in the blood is higher than in the dialysate, the metabolic waste moves into the dialysate (by diffusion through semi-permeable membrane)
-the dirty dialysate must be constantly pumped out and replaced with clean liquid so the concentration gradient for such diffusion to occur remains the same
disadvantages:
-restricts mobility
-only limited wastes can be removed, therefore patients must go on diet to avoid accumulation of substances such as sodium phosphate and potassium ions
-some people experience symptoms of nausea, dizziness and cramps during procedure
Advantages:
-only occurs 2-3 week instead of continuously
-no equipment needed to be kept at home
-nurses and technicians perform treatment for patient
Peritoneal Dialysis:
-incision is made in patients abdomen and a piece of equipment called Tenckhoff catheter is inserted into incision
-dialysate moves through catheter into the abdomen (up to 2.5 litres of it)
-dialysate remains in the abdomen whilst metabolic waste products diffuse across the peritoneum from the underlying blood vessels
-the dirty dialysate is drained and replaces with fresh fluid Automates peritneal dialysis (APD) occurs automatically during the