QUESTIONS AND SOLUTIONS GRADED A+
◉If the plunger on the syringe is pulled back too fast the specimen
may be. Answer: hemolyzed
◉When performing a heel puncture on an infant, proper technique
includes. Answer: placing lancet flat against the skin on the medial
or lateral plantar surface of heel.
◉what condition would most likely cause hemoconcentration?.
Answer: Dehydration.
◉What can cause hematoma formation?. Answer: firmly anchoring
vein in needle insertion.
◉anticoagulant in green top tube. Answer: sodium heprin
◉what is preferred method for infant blood collection?. Answer:
capillary
,◉what tube is normally used to collect a serum sample?. Answer:
red top
◉correct angle for the needle to be inserted into skin?. Answer: 30
degrees
◉why is it necessary to wipe first drop of blood away when
performing a capillary procedure?. Answer: to reduce interstitial
fluid contamination
◉Alcohol should be allowed to dry completely prior to skin
puncture to. Answer: prevent lysis of red blood cells
◉the phlebotomist places blood specimen in circles on special filter
paper, for what test?. Answer: PKU
◉A falsely decreased blood alcohol level may be obtained if. Answer:
the tube is only partially filled
◉Following venipuncture, what should be applied to venipuncture
site?. Answer: clean sterile gauze pad
, ◉When is a phlebotomist allowed to perform a venipuncture on an
ankle vein?. Answer: When all other options have been exhausted
and the physician has given approval.
◉By bracing the hand while holding the needle assembly against the
patients arm you. Answer: prevent excess needle movement
◉When performing a capillary blood collection, the first drop of
blood is wiped away because. Answer: the first drop typically has
more tissue fluid
◉What instrument may be used when trying to visualize the veins
during venipuncture. Answer: Venoscope
◉What is correct procedure when performing blood smear for
leukocyte alkaline phosphate (LAP)?. Answer: Perform skin
puncture, wipe away the first drop of blood & then touch slide to the
next drop of blood.
◉How long should a tourniquet be placed around a patients arm?.
Answer: no more than one minute
◉Hemoconcentration of a specimen can be avoided by?. Answer:
Removing the tourniquet within one minute.