BLOCK III - UNIT 2b. Renal Replacement Therapy Flashcards
What are Contraindications for Renal Replacement Therapy?
• Hemodynamic instability
• Severe coagulopathy- with heparin It prevents the body from forming clots while on dialysis.
• Lack of access to circulation
What filters the blood using osmosis and diffusion by passively moving solvents through a semipermeable membrane?
Peritoneal dialysis
What is the passive movement of solutes through a semipermeable membrane from an area of higher concentration to lower?
Diffusion
is the passive movement of solvents through a semipermeable membrane from an area of lower concentration to an area of higher concentration?
Osmosis
What is the name of a Pressure gradient that is set up so that the water is pushed or pumped across the dialysis filter and carries the solutes from the bloodstream with it?
Convection
How is CRRT unique?
it can also treat life threatening conditions in the absence of renal failure.
These patients are not stable enough to undergo hemodialysis or peritoneal dialysis.
If the hematocrit is greater than __%, the blood is too viscous and will clot off the filter in the CRRT machine
45
Fluid restrictions are needed when on CRRT? Yes or no?
no need for volume restriction so nutrition is maximized
An AV Fistula is used for short term access.
T or F?
False, An AV Fistula is used for long term access.
What is the preferred access method for Renal Replacement Therapy because it resists clotting and infection, has better blood flow, lasts longer, and is used for chronic dialysis patients?
Arteriovenous (AV) Fistula
It takes how long for the fistula to form and be operational?
about six weeks
If the patient has inadequate vascular structure to create a fistula, the surgeon has to implant what?
an artificial graft, typically a plastic tube or a cadaver vein.
How do you do an assessment for a AV fistula?
