quiz 3 Flashcards
Which anticoagulant is used for blood gas determinations?
Heparin
What color tube should be collected for Stat Serum?
Orange
Which of the following tubes should be drawn first?
Light blue
Which of the following tubes need to be inverted 8 to 10 times to mix properly after drawing?
Lavender (EDTA)
What color vacuum tube should be drawn for toxicology and trace metal analysis?
Royal blue
Which of the following is preferred collection site for laboratory testing of a patient at high risk for venous thrombosis?
Arterial sample
What is the preferred method of blood collection in newborns and infants?
Dermal puncture
Which of the following has higher levels in capillary blood than in venous blood?
calcium
Puncture of the bone during dermal puncture can result in what potentially serious and sometimes fatal bone infection?
osteomyelitis
What is the maximum acceptable depth for a heel puncture?
2 mm
What is the maximum acceptable width for a dermal puncture?
0.5 mm
Which of the following is the appropriate site for dermal puncture on an infants foot?
Medial and lateral borders of plantar surface
Which of the following tests cannot be collected using a dermal puncture?
Blood culture
Which of the following is an appropriate dermal puncture site for adults?
Ring finger, perpendicular to the ridges
Which antiseptic may affect the results of tests for bilirubin, uric acid, potassium, and phosphorus from a dermal puncture and therefore should not be used on a dermal puncture?
provide- iodine
Betadine may elevate results of which tests if used to clean the skin for dermal puncture
Sodium, Potassium, chloride, bicarbonate
Which of the following is an acceptable step during collection of blood by dermal puncture?
Wipe away the first drop of blood with a dry, clean guaze pad.
Which screening test measures the overall integrity of primary hemostasis?
Bleeding time
Which of the following over the counter medication is known to increase bleeding times?
Aspirin
Which of the following would be interpreted as normal bleeding time?
6 minutes
What is the usual site for performing a standard bleeding time test?
Forearm, just below antecubital crease
Which of the following is a part of proper technique when performing a bleeding time test?
Touch the incision with filter paper every 30 seconds to blot blood.
At what intervals should blood be wicked with filter paper when performing a bleeding time test?
30 seconds
Drawing excessive amounts of blood from a patient puts them at risk for what type of anemia?
Iatrogenic
For which of the following cases would a capillary puncture be contraindicated?
Severely dehydrated patients
For which of the following patients would a capillary puncture be preferred?
A patient requiring frequent blood tests