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dialysis machine (1 Viewer)
- Thread starter Mege
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*sarah*
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umm... well dialysis allows a person with damaged kidneys to remove wastes from the blood and thus stay healthy and have a better standard of life. Disadvantages could be that u must be connected to the machine several times a week for several hours for the process to be effective and its not as efficient as the natural process.
kimmeh
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• Both processes involve removing wastes from the blood
• The products that are not removed in both processes of filtration are RBC, WBC, proteins, platelets and large molecules.
• The process of renal dialysis is an artificial process to filter the blood whether as the kidney undergoes a natural process to filter the blood (mechanical/organic)
• Renal dialysis is a non-selective process and the kidney is a selective process
• The type of membrane used in kidneys is a permeable membrane that varies with hormones. Renal dialysis involves a partially permeable synthetic membrane.
• Filtration occurs in the glomerulus in the kidney. For dialysis, blood is taken from a patient’s artery and is passed through a partly permeable membrane and filtration occurs in a dialysis machine.
• The products removed from the kidneys are the fluid components of blood, urea, amino acids, salts and water. In dialysis, waste products are removed only. Glucose stays in the blood.
• Within a kidney, water moves via passive transport and salts, amino acids, glucose are transported via active transport. For dialysis, there is the diffusion of waste products.
• The kidneys do not require an anti-clotting agent whether as renal dialysis does.
• Frequency of the filtration in the kidney is continuous, whether as renal dialysis is done 3 times a week, about 3-4 hours each session.
i'm sure you can deduce the advantages/diadvantages from there
• The products that are not removed in both processes of filtration are RBC, WBC, proteins, platelets and large molecules.
• The process of renal dialysis is an artificial process to filter the blood whether as the kidney undergoes a natural process to filter the blood (mechanical/organic)
• Renal dialysis is a non-selective process and the kidney is a selective process
• The type of membrane used in kidneys is a permeable membrane that varies with hormones. Renal dialysis involves a partially permeable synthetic membrane.
• Filtration occurs in the glomerulus in the kidney. For dialysis, blood is taken from a patient’s artery and is passed through a partly permeable membrane and filtration occurs in a dialysis machine.
• The products removed from the kidneys are the fluid components of blood, urea, amino acids, salts and water. In dialysis, waste products are removed only. Glucose stays in the blood.
• Within a kidney, water moves via passive transport and salts, amino acids, glucose are transported via active transport. For dialysis, there is the diffusion of waste products.
• The kidneys do not require an anti-clotting agent whether as renal dialysis does.
• Frequency of the filtration in the kidney is continuous, whether as renal dialysis is done 3 times a week, about 3-4 hours each session.
i'm sure you can deduce the advantages/diadvantages from there
you mainly have to compare dialysis with normal renal function. but dialysis is good cos it gives people who would normally die a chance to live for another few years (life expectancy on dialysis is 15 years i think), or keeps them alive until they find a donor. however it's really draining, and even though people might have some time for a job they might be too tired cos it's quite exhausting apparently and they do it for 8 hours 3 times a week. it slowly breaks down the red blood cells cos the pump is high pressured. and it doens't control hormones (not a homeostatic process) so ppl can still have issues with that. and ppl of dialysis can only drink 600mL a day or something. their body builds up toxins in the days before dialysis, so they have all this poison running through their blood for a few days. however, these disadvantages are sort of outweighed by the fact that the patient still gets to live.