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WorksheetsPrinciples of Haemodialysis
Total questions: 11
Worksheet time: 53mins
Dialysis replaces these main functions EXCEPT: (1 answer)
Balancing fluid & electrolytes.
Maintaining the body's acid-base balance.
Replace electrolytes to the body.
Filter waste from the blood.
Apa maksud "Solution"??
It is electrolytes dalam dialysate.
It is water.
It is mixture of fluid & electrolytes
It is something you add into water.
Diffusion is:
movement of water from higher concentration to lower concentration area.
movement of solutes from lower concentration of solutes to higher concentration of solutes across a semipermeable membrane.
movement of water based on pressure gradient.
movement of solutes from higher concentration of solutes to lower concentration of solutes across a semipermeable membrane.
OSMOSIS is:
movement of fluid from an area of low solute concentration (hypotonic solution) to high solute (hypertonic solution) concentration.
movement of solutes from an area of high solute concentration to low solute concentration.
Why is COUNTERCURRENT of blood flow & dialysate important in haemodialysis therapy?
To ensure better flow of blood compartment & dialysate compartment.
To stabilize patient's blood pressure during dialysis.
To reduce infection in pt.
To maintain high concentration gradient between blood & dialysate compartment.
Factors affecting diffusion during haemodialysis are true EXCEPT:
The faster the blood pump, the better the clearance of solutes.
Dialysate has a lower concentration of solutes than blood.
The higher concentration gradient between blood & dialysate, the better the clearance of solutes.
Smaller pore size of the dialyser membrane removes solutes very efficiently.
Ultrafiltration is:
movement of solutes from an area of high to low concentration.
movement of fluid from a region of high to low pressure, caused by pressure gradient.
movement of pressure between blood & dialysate compartment.
How does BACKFILTRATION / Reverse filtration happen???
It happens when the pressure in blood compartment is higher than dialysate compartment.
It happens when the concentration gradient in blood is higher than dialysate compartment.
it happens when fluid from dialysate enters blood compartment due to higher pressure in dialysate compartment.
it is reflected by high TMP (transmembrane pressure).
The following are TRUE about haemoodialysis, EXCEPT: (1 answer)
Solutes (urea,creatinine,etc) are removed by diffusion.
Water is removed by ultrafiltration.
Bicarbonate & calcium is supplied by dialysate.
Haemoodialysis replaces all the functions of the kidney.
Fluid removal can be removed by these 3 principles:
Diffusion
Convection
Osmosis
Ultrafiltration
The transmembrane pressure in the dialyser reflects the:
(1 correct answer)
diffusion rate of blood compartment
only +ve pressure on the blood compartment is recorded
+ve and -ve pressure on the dialyser compartment
the lower the UF rate, +ve pressure will shown the machine
