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The dialyzer clearance K is usually estimated, based on the urea transfer ability of the dialyzer ( a function of its size and membrane permeability ), the blood flow rate, and the dialysate flow rate.
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dialyzer and clearance
K < sub > 0 </ sub > A, expressed in mL / min, can be thought of as the maximum clearance of a dialyzer at very high blood and dialysate flow rates.
When reused over 15 times with current methodology, the dialyzer can lose B2m, middle molecule clearance and fiber pore structure integrity, which has the potential to reduce the effectiveness of the patient's dialysis session.
In some dialysis machines, the urea clearance during dialysis is estimated by testing the ability of the dialyzer to remove a small salt load that is added to the dialysate during dialysis.
dialyzer and K
So dialyzer efficiency is usually expressed as the K < sub > 0 </ sub > A-the product of permeability coefficient and area.
dialyzer and is
The blood is pumped through a dialyzer or " hemofilter " as in dialysis, but no dialysate is used.
The blood is then pumped through the dialyzer, and then the processed blood is pumped back into the patient's bloodstream through another tube ( connected to a second needle or port ).
The trend lately is to pass this final purified water ( after mixing with dialysate concentrate ) through a dialyzer membrane.
The dialyzer is the piece of equipment that actually filters the blood.
Whether using a high-flux dialyzer improves patient outcomes is somewhat controversial, but several important studies have suggested that it has clinical benefits.
The dialyzer is semi-disassembled then flushed repeatedly before being rinsed with water.
The dialyzer is first pre-cleaned by a technician, then automatically cleaned by machine through a step-cycles process until it is eventually filled with liquid disinfectant for storage.
Blood is pumped through the blood compartment of a high flux dialyzer, and a high rate of ultrafiltration is used, so there is a high rate of movement of water and solutes from blood to dialysate that must be replaced by substitution fluid that is infused directly into the blood line.
However, dialysis solution is also run through the dialysate compartment of the dialyzer.
Nephros's OLpur MD220 Hemodiafilter is a dialyzer designed expressly for HDF therapy that employs Nephros's proprietary Mid-Dilution Hemodiafiltration technology.
Nephros's OLpur MD220 Hemodiafilter is a dialyzer designed expressly for HDF therapy that employs Nephros's proprietary Mid-Dilution Hemodiafiltration technology.
dialyzer and usually
A larger dialyzer with a larger membrane area ( A ) will usually remove more solutes than a smaller dialyzer, especially at high blood flow rates.
dialyzer and urea
However, use of Kt / V and urea modeling in general allows for comparing expected with predicted dose of dialysis, which can be used to analyze dialysis treatments and dialyzer clearances and in troubleshooting and quality control activities.
dialyzer and ability
This work resulted in Graham's ability to separate colloids and crystalloids using a so-called " dialyzer ", the precursor of today's dialysis machine.
Currently, as of 2010, newer, more advanced reprocessing technology has proven the ability to completely eliminate the manual pre-cleaning process altogether and has also proven the potential to regenerate ( fully restore ) all functions of a dialyzer to levels that are approximately equivalent to single-use for more than 40 cycles.
dialyzer and size
These include frequency ( how many treatments per week ), length of each treatment, and the blood and dialysis solution flow rates, as well as the size of the dialyzer.
dialyzer and membrane
Hemodialysis removes wastes and water by circulating blood outside the body through an external filter, called a dialyzer, that contains a semipermeable membrane.
dialyzer and blood
The hemodialysis machine pumps the patient's blood and the dialysate through the dialyzer.
This forms the " blood compartment " of the dialyzer.
dialyzer and .
Dr. Willem Kolff, a Dutch physician, constructed the first working dialyzer in 1943 during the Nazi occupation of the Netherlands.
Then, in 1945, a 67-year-old comatose woman regained consciousness following 11 hours of hemodialysis with the dialyzer, and lived for another seven years before dying of an unrelated condition.
Dr. Willem Kolff was the first to construct a working dialyzer in 1943.
The first successfully treated patient was a 67-year-old woman in uremic coma who regained consciousness after 11 hours of hemodialysis with Kolff ’ s dialyzer in 1945.
This led to the manufacture of the next generation of Kolff ’ s dialyzer, a stainless steel Kolff-Brigham dialysis machine.
Subsequently he used such shunts, made of glass, as well as his canister-enclosed dialyzer, to treat 1500 patients in renal failure between 1946 and 1960, as reported to the First International Congress of Nephrology held in Evian in September 1960.
The dialyzer may either be discarded after each treatment or be reused.
This practice includes the cleaning of a used dialyzer to be reused multiple times for the same patient.
If done right, dialyzer reuse can be very safe for dialysis patients.
Manual reuse involves the cleaning of a dialyzer by hand.
clearance and K
In addition, a 15 cm clearance between bars of the gating was allowed to ensure unobstructed flight into and out of the cave .< ref > Martin, K. W., D. M. Leslie, et al.
K series motors have both Hydraulic tappet or Hydraulic Valve Lifters, solid lifters and 1. 5 ratio rockers with an adjustment thread for tappet clearance.
On February 21, 2007 Chief Minister A. K. Antony told reporters after a cabinet meeting that " when the Silent Valley proposal was dropped, the centre had promised to give clearance to the Pooyamkutty project.
K ( clearance ) multiplied by t ( time ) is a volume ( since mL / min x min
* K is the clearance
* K < sub > D </ sub > is the clearance
* K is the clearance or
* K is the clearance
* K is the clearance or
It is the motivation for K ' ( the equivalent clearance ):
* K ' is the equivalent clearance or
* The model can be applied to substances other than urea, if the clearance, K, and generation rate of the substance,, are known.
1.072 seconds.