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CCHT Review Exam
Certified Clinical Hemodialysis Technician Review Exam
Question | Answer |
---|---|
The functional unit of the kidney, or the structure in the kidney that does the work, is the: | Nephron |
A nephron is made up of: | A glomerulus and a tubule. |
The endocrine functions of the kidney include: | Making erythropoietin and the active form of vitamin D. |
The leading cause of End Stage Renal Disease for adults in the US is: | Diabetes |
Patients with kidney failure often complain of itching, which is likely to be caused by: | Hyperphosphatemia |
Why do kidney patients often have bone disease? | Kidneys stop producing calcitrol. |
Symptoms that a patient may need more dialysis time include: | Anorexia, fatigue, swelling. |
A semipermeable membrane is a porous barrier that: | Allows for only certain sized particles to cross. |
Diffusion is movement of particles: | From an area of higher concentration. |
Negative pressure is pressure created when: | Fluid is pulled through a restriction. |
During Dialysys, ultrafiltration occurs when: | Water is removed from blood because there is a pressure gradient between blood and dialysate. |
At which point in the extracorporeal circut is the blood usually under negative pressure? | The arterial line section before the blood pump.` |
Which of the following will increase the amount of solutes that will diffuse across the semipermeable membrane? | High concentration gradients. |
The components of the dialysate treatment that affect clearance include: | Dialysate flow, time of treatment, dialyzer size, blood flow rate. |
Two things that affect the dialyzer's ability to remove wastes from the body include: | Surface area and molecular weight cutoff. |
What are some components that make up a dialysate solution? | Bicarbonate, Sodium, Potassium |
What is the most important safety monitor during a dialysys treatment? | The dialysys technician |
Dialysate conductifity measures: | The total electrical charge of a solution |
Dialysate that has too much sodium may cause patient injury. Too much sodium or hypernatremia can cause: | Headaches, high blood pressure, and shriveling of red blood cells. (crenation) |
DIalysate that has too little sodium can cause: | Low blood pressure, cramping, and hemolysis. |
Things that can affect dialysis adequacy include: | Time on tx, blood and dialysate flow rates, dialyzer clotting. |
Seizures during dialysis may be caused by: | Electrolyte imbalance, hypotension, dialysate composition errors. |
Which of the following situations will cause an increase in venous pressure during dialysis? | Venous needle infiltration. |
The tmp has been gradually changing during the last 1-1/2 hours of dialysis. You suspect clotting in the dialyzer. The first action you should take is to: | Rinse the dialyzer with normal saline. |
If there is a decrease in the pt's URR or Kt/V, which of the following factors should be looked at? | Increased access recirculation, diminished dialyzer performance due to reprocessing, inadequate anticoagulation of the blood, blood pump speed. |
What is the first symptom that a pt developing dialysis disequilibrium syndrome is most likely to exhibit? | Headache |
What set of symptoms will a pt likely exhibit when fluid overloaded? | Tachycardia, hypertension, dyspnea. |
First use symdrome is a hypersensitivity reaction to a dialyzer. It is characterized by: | Back pain, anxiety, tachycardia, wheezing, circulatory collapse. |
Dialyzer performance can be affected by reuse. What set of potential problems may be related to reuse? | Reduced dialyzer performance, plugged hollow fibers, changed fiber bundle volume. |
AAMI standards recommend quality control activities before a reprocessed dialyzer is used on a pt. How many people must check the dialyzer to verify quality control imformation? | Two people, one of whom should be the patient. |
What are the symptoms of a chemical reaction due to incomplete rinsing of germicide from a reprocessed dialyzer? | Burning in the access site, numbness in the access arm, blurred vision |
Dialyzers are processed before use to rinse out manufacturing residues and to: | Establish the original fiber bundle volume of the dialyzer and check for leaks. |
What are two criteria for rejecting a reprocessed dialyzer? | Less than 80% of original fiber bundle volume, aesthetic appearance. |
What statement is true of AAMI? (The association for the advancement of medical instrumentation) | AAMI recommends voluntary standards for dialysis water tx. |
According to AAMI standards, bacteriologic testing for water and dialysate should take place: | Monthly. |
According to the AAMI standards, the total microbial count of water used to prepare dialysate shall not exceed: | 200 CFU/ml |
Describe 4 types of anastomosis for an internal arteriovenous fistula: | 1:Artery side to vein side 2:Artery end to vein end 3:Artery end to vein side 4:Artery side to vein end |
Anastomosis means: | Surgical connection between two blood vessels |
Bruit means: | Buzzing, swooshing sound heard in a fistula or graft |
Thrill means: | Vibration from pulse of blood in a dialysis vascular access |
What is a true statement about catheters? | Internal jugular vein is the preferred insertion site for both temporary and long term catheters. |
During dialysis treatment, what would indicate a break in the integrity of the extracorporeal circuit? | The appearance of air or foam in any bloodline. |
Poor blood flow during dialysis in patients with catheters is often due to? | A blood clot, poor placement of the catheter within the blood vessel, a fibrin sheath that has formed around the catheter. |
A dialyzer with a UF coefficient of 12 and a TMP of 120 will remove how many mL of fluid per hour? | 1440 (Kuf * TMP) |
If a venous needle is infiltrated, what would you do? | Insert a second needle above the venous infiltration. |
Your patient orders for for a 17 guage needle. You know that: | He will only be able to attain a 250-300 mL/min QB. |
The only professional organization in the country just for dialysis technicians is: | The national association of nephrology technicians. |
The venous pressure on a dialysis machine starts to rise but the venous needle is not infiltrated. What could be responsible? | Clotting of the venous or arterial lines. |
A factor that can affect peritoneal membrane permeability is: | Peritonitis infection. |