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Final
Chapter 9
| Question | Answer |
|---|---|
| Which instance most closely resembles basal state? | A patient who has just awakened at 0600 after fasting all night |
| You must draw a protime specimen from a patient with IVs in both arms. Which of the following is the best thing to do? | Draw the specimen below an IV. |
| It is not a good idea to collect a CBC specimen from a screaming infant because the | white blood count may be falsely elevated. |
| You have no choice but to draw a specimen from a site with a hematoma. Where should you obtain the specimen? | Distal to the hematoma |
| Prolonged tourniquet application may cause a change in blood composition primarily because of | hemoconcentration. |
| Which of the following vascular access devices is placed in a peripheral vein for the purpose of blood collection and administration of medication? | Heparin lock |
| A phlebotomist has attempted twice to draw a partial thromboplastin time (PTT) specimen from a patient with difficult veins. Both times the phlebotomist has been able to draw only a partial tube. What should the phlebotomist do? | Have another phlebotomist attempt to draw the specimen. |
| Why do pregnant patients have lower reference ranges for red blood cell counts? | Body fluid increases in pregnancy, diluting red blood cells. |
| Levels of which analyte can differ by 50% or more between morning and late afternoon? | Cortisol |
| Which situation is the best way to tell that you may have accidentally punctured an artery? | The blood pulses into the tube. |
| If blood is drawn too quickly from a small vein, the vein will have a tendency to | collapse. |
| How long before obtaining blood for testing should drugs known to interfere with blood tests be discontinued? | 4 to 24 hours |
| A fistula is a(n) | permanent fusion of an artery and a vein. |
| When a test requires a fasting specimen, but the serum is __________, it is a clue that the patient was not fasting. | lipemic |
| Tests influenced by diurnal variation are often ordered as __________ tests, and it is important to collect them as close as possible to the time ordered. | timed |
| Tattooed areas should be avoided as venipuncture sites because | fresh tattoo sites may be more prone to infection. tattoos can mask an adverse reaction to the draw. there could be an undetected infection in that area. |
| An arm that is paralyzed has | lost muscle function. |
| Which of the following is the BEST way to avoid reflux when drawing a blood specimen? | Fill tubes from the bottom up. |
| If a patient is complaining of sharp radiating pain from the needle insertion site, the phlebotomist should | immediately terminate the venipuncture. |
| Hemolysis can erroneously elevate | ammonia. magnesium. potassium. |
| A tube fails to fill with blood during a venipuncture. Which of the following might lead you to think that the vein has collapsed? | The vein disappears when you engage the tube. |
| The creatinine clearance rate decreases in elderly patients due to a normal decline in A. hormone levels. | kidney function. |
| When the blood from an ETS tube “backwashes” into the patient, it is known as | Reflux |
| Removing blood on a regular basis or in large amounts can lead to ________________ anemia. | Latrogenic |
| The medical term for fainting is _______________ . When fainting is due to the action of the vagus nerve on the blood vessels it is called _______________________ ____________________. | Syncope, vasovagal, Syncope |
| Obstruction or complete stoppage of lymph flow is called | Lymphostasis |
| A condition in which blood components that cannot easily leave the bloodstream become concentrated in the smaller plasma volume is known as | Hemoconcentration |
| Peak levels of cortisol normally occur in the | Morning 0800 |
| A person who lives on Pike's Peak is more likely to have a higher ___________count than a person who lives in Florida. | RBC |
| A drug known to interfere with a urine test should be discontinued _________ to ________hours prior to urine collection. | 48-72 |
| If blood is filling the collection tube very slowly and a hematoma is beginning to form, the phlebotomist should immediately | Remove the needle |
Created by:
cbillips13