Dialysis machine

Dialysis machine
A machine that filters a patient’s blood to remove excess water and waste products when the kidneys are damaged, dysfunctional, or missing. Blood is drawn through a specially created vein in the forearm, which is called an arterio-venous (AV) fistula. From the AV fistula, blood is taken to the dialysis machine through plastic tubing. The dialysis machine itself can be thought of as an artificial kidney. Inside, it consists of more plastic tubing that carries the removed blood to the dialyser, a bundle of hollow fibers that forms a semipermeable membrane for filtering out impurities. In the dialyser, blood is diffused with a saline solution called dialysate, and the dialysate is in turn diffused with blood. Once the filtration process is complete, the cleansed blood is returned to the patient. Most patients using dialysis due to kidney impairment or failure use a dialysis machine at a special dialysis clinic. Most sessions take about four hours, and typically patients

Medical dictionary. 2011.

Look at other dictionaries:

  • dialysis machine — /daɪˈæləsəs məʃin/ (say duy aluhsuhs muhsheen) noun an apparatus in which dialysis is performed. Also, dialyser …   Australian English dictionary

  • dialysis machine — device used to cleanse and purify the blood (a function usually carried out by the kidneys) …   English contemporary dictionary

  • dialysis machine — noun a medical instrument for separating substances in solution by unequal diffusion through semipermeable membranes • Syn: ↑dialyzer • Derivationally related forms: ↑dialyze (for: ↑dialyzer) • Hypernyms: ↑medical instrument …   Useful english dictionary

  • Dialysis — This article is about renal dialysis; for the laboratory technique, see dialysis (biochemistry); for treatment for liver failure, see liver dialysis. Dialysis Intervention Patient receiving dialysis …   Wikipedia

  • Dialysis catheter — Catheter for hemodialisis A dialysis catheter is a catheter used for exchanging blood to and from the hemodialysis machine from the patient. The dialysis catheter contains two lumens: Venous Arterial This is a confusing terminology for layperson …   Wikipedia

  • dialysis — di|al|y|sis [daıˈælısıs] n [U] [Date: 1800 1900; : Modern Latin; Origin: Greek, separation , from lyein to loosen ] the process of taking harmful substances out of someone s blood using a special machine, because their ↑kidneys do not work… …   Dictionary of contemporary English

  • dialysis — /duy al euh sis/, n., pl. dialyses / seez /. 1. Physical Chem. the separation of crystalloids from colloids in a solution by diffusion through a membrane. 2. Biochem. the separation of large molecules, as proteins, from small molecules and ions… …   Universalium

  • Dialysis — The process of cleansing the blood by passing it through a special machine. Dialysis is necessary when the kidneys are not able to filter the blood. Dialysis allows patients with kidney failure a chance to live productive lives. There are two… …   Medical dictionary

  • dialysis — [[t]daɪæ̱lɪsɪs[/t]] N UNCOUNT Dialysis or kidney dialysis is a method of treating kidney failure by using a machine to remove waste material from the kidneys. I was on dialysis for seven years before my first transplant …   English dictionary

  • machine — noun 1 piece of equipment ADJECTIVE ▪ giant, great, huge, large, powerful ▪ portable ▪ automated, automatic …   Collocations dictionary

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