dialysis (redirected from dialysis machine)

dialysis /di·al·y·sis/ (di-al´ĭ-sis) [Gr.]

1. the process of separating macromolecules from ions and low molecular weight compounds in solution by the difference in their rates of diffusion through a semipermeable membrane, through which crystalloids pass readily but colloids pass slowly or not at all.

2. hemodialysis.dialyt´ic

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equilibrium dialysis  a technique of determination of the association constant of hapten-antibody reactions.

lymph dialysis  removal of urea and other elements from lymph collected from the thoracic duct, treated outside the body, and later reinfused.

peritoneal dialysis  dialysis through the peritoneum, the dialyzing solution being introduced into and removed from the peritoneal cavity, as either a continuous or an intermittent procedure.

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di·al·y·sis (d-l-ss)

n. pl. di·al·y·ses (-sz)

1. The separation of smaller molecules from larger molecules or of dissolved substances from colloidal particles in a solution by selective diffusion through a semipermeable membrane. Also called diffusion.

2. Hemodialysis.

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dia·lytic (--ltk) adj.

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Dialysis

A process of filtering and removing waste products from the bloodstream. Two main types are hemodialysis and peritoneal dialysis. In hemodialysis, the blood flows out of the body into a machine that filters out the waste products and routes the cleansed blood back into the body. In peritoneal dialysis, the cleansing occurs inside the body. Dialysis fluid is injected into the peritoneal cavity and wastes are filtered through the peritoneum, the thin membrane that surrounds the abdominal organs.

Mentioned in: Alport Syndrome, Glomerulonephritis, Kidney Transplantation, Shigellosis, Thrombolytic Therapy

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dialysis

[dī·al′isis]

Etymology: Gk dia + lysis a loosening

1 the process of separating colloids and crystalline substances in solution by the difference in their rate of diffusion through a semipermeable membrane.

2 a medical procedure for the removal of certain elements from the blood or lymph by virtue of the difference in their rates of diffusion through an external semipermeable membrane or, in the case of peritoneal dialysis, through the peritoneum. Dialysis may be used to remove poisons and excessive amounts of drugs, to correct serious electrolyte and acid-base imbalances, and to remove urea, uric acid, and creatinine in cases of chronic end-stage renal disease. Dialysis involves diffusion of particles from an area of high to lower concentration, osmosis of fluid across the membrane from an area of lesser to one of greater concentration of particles, and ultrafiltration or movement of fluid across the membrane as a result of an artificially created pressure differential. See also hemodialysis, peritoneal dialysis.

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dialysis (dīal´isis),

n a type of filtration used to separate smaller molecules from larger ones contained in a solution. The molecular solution is placed on one side of a semipermeable membrane and water on the other side. The smaller molecules pass through the membrane into the water; the larger molecules are retained in the solution.

dialysis, kidney, artificial,

n See kidney dialysis, artificial.

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dialysis

the diffusion of solute molecules through a semipermeable membrane, passing from the side of higher concentration to that of the lower; a method sometimes used in cases of defective renal function to remove from the blood elements that are normally excreted in the urine (hemodialysis). The principles of dialysis are utilized in renal dialysis with a hemodialyzer (hemodialysis) and in peritoneal dialysis.

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extracorporeal dialysis

dialysis by a hemodialyzer. See hemodialysis.

peritoneal dialysis

dialysis through the peritoneum, the dialyzing solution being introduced into and removed from the peritoneal cavity, as either a continuous or an intermittent procedure. See also peritoneal dialysis.

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dialysis

Nephrology The separation of molecules in solution based on differences in size; in renal failure, dialysis is used to separate macromolecules from low-molecular-weight molecules, using a semipermeable membrane Therapeutics The clearance of a drug by a hemodialysis unit. See Hemodialysis, Peritoneal dialysis.

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Patient discussion about dialysis machine.

Q. I am upset by the lack of privacy at dialysis centers. Does anyone see their nephrologist in private office? My nephrologist comes to see me and examine me while I am receiving dialysis. I understand his talking to me but the exam is objectionable and I am unable to ask personal questions because everyone is listening. I am told they are all old and don't hear us but that is patronizing and extremely rude. Are there rules against this? Why can't we have office visits where there is some privacy?

A. I live in Sault Ste Marie Ontario Canada and if you need to ask personal questions you can make an appointment to see your doctor in the clinic.
But when I was in Calgary Alberta they would make you a appointment every 3 months to see the doctor.

Q. why the renal doctor told my husband that he needs to eat a dozen of egg a week for protein,how it will help? it won`t afect his cholesterol,also i would like to know what role the protein plays on his treatment and what other foot its rich in protein that he can can take,without causing problems to his health.

A. if i understand correctly, your husband is diabetic. like my grandfather he probably developed a "Diabetic nephropathy" which is a long name to: kidney being destroyed because of blood vessels clotted by diabetes. because of that destruction the kidneys allow protein to go out in the urine. this is a dangerous situation,a protein in the name of "albomin" helps our blood to hold fluids in blood vessels. without it fluid will leave the blood and go to our organs. not a good situation. so he needs a lot of proteins.
here is a list of a 100 protein rich foods:
http://smarterfitter.com/blog/2007/10/28/100-most-protein-rich-vegetarian-foods/