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CH. 9
Pre exam/ Pre analytical
| Question | |
|---|---|
| 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 an IV in both arms. Which of the following is the best thing to do? | below IV |
| It is not a good idea to collect 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 the 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 tiube. 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 fluids increases in pregnancy, diluting red blood cells |
| Levels of this analyte can differ by 50% or more between morning and later afternoon | Cortisol |
| Which instance may lead you to suspect that have accidentally punctured an artery | The blood pulses into the tube |
| If the blood is drawn too quickly from a small vein, the vein will tend to | collapse |
| How long before specimen collection should drugs known to interfere with testing be discountinued | 4-24 hrs |
| A fistula is a | permanent fusion of an artery and vein |
| When a test requires a fasting specimen, but the serum exhibits _____, it is a clue that the patient was not fasting | lipemia |
| Test 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 |
| When the additive from a tube "backwashes" into the patient, it is known as | reflux |
| Removing blood on a regular basis or in large amounts can lead to | Iatrogenic anemia |
| The medical term for fainting is called | Syncope |
| Obstruction or complete stoppage of lymph flow is called | lymphostasis |
| A condition in which blood components that cannot easily leave the blood stream become concentrated in the smaller plasma volume known as | Hemoconcentration |
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