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84 Cards in this Set
- Front
- Back
Prior to performing a venipuncture, why is it important to get information about whether or not the patient has eaten recently? |
Laboratory tests can be affected by the ingestion of food and drink |
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If a patient is obese, what special equipment, if any, would be helpful in the specimen collection process? |
A large blood pressure cuff |
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When a patient has "difficult" veins, what strategies, if any, can be used to improve the likelihood of a successful puncture? |
- slight rotation of the patient's arm to a different position - palpating the entire antecubital area to trace vein path - warming the site |
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Arteries differ from veins in which of the following ways? |
Thicker vessel walls, pulsating feel |
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If arm veins cannot be used for a venipuncture, the preferred alternative veins lie in the |
Dorsal side of the hand or wrist |
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When the evacuated tube method is used for venipuncture, select the correct order of collection for the following tubes: blood culture tubes, coagulation tube, and hematology tube |
Yellow, blue, lavender, blood culture tubes |
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If a patient is frail and has a tendency to faint, what equipment, if any, would be helpful in the specimen collection process? |
A recliner |
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If a patient has a bruise in the antecubital area of his right arm (his nondominant arm), what alternate site should be considered? |
The antecubital area of the left arm |
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How many more times should a phlebotomist try to perform a venipuncture on a patient if he has failed once already? |
Once |
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Which specimen collection tube is commonly used for hematology tests? |
EDTA |
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Which specimen collection tube is commonly used for hemostasis tests? |
Sodium citrate |
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Adding too much blood to a sodium citrate tube can cause |
Shorter clotting time |
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When collecting a blood specimen with the butterfly method and PT and PTT tests are the only tests ordered, what is the correct procedure? |
Use a discard tube, then collect sodium citrate tube |
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HIV, HBV, and HCV are _____________ pathogens |
Bloodborne |
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Collection tube additives may be accidentally transferred from one specimen tube to the next when the tubes are not oriented in a __________ _________ during filling |
Downward position |
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The order for a laboratory test is often called a requisition or |
Request |
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Skin puncture techniques are useful in which of the following conditions? |
When the patient is a neonate |
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Blood smears for evaluation of cells must be made carefully. Which of the following features should be present? |
A feathered edge |
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Blood from a skin puncture is a mix of |
Blood and interstitial fluid |
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What is the best angle for spreading a blood smear by using two glass slides? |
30 degrees |
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What is the average skin puncture depth appropriate for an adult? |
2-3 mm |
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Excessive massaging or milking of the finger during a skin puncture procedure can cause |
Hemolysis and contamination of the specimen with tissue fluids |
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In making a blood smear or slide, after the drop of blood has been spread across the glass slide, what is the next step? |
Allow it to air dry |
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Nails can grow at a rate of about |
0.1 mm per day |
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Fingerstick procedures cannot be performed when which test is ordered? |
Blood cultures and coag |
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Alcohol that has not dried prior to a skin puncture can prevent a round drop from forming |
True |
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Alcohol that has not dried prior to a skin puncture can cause erroneous results for some laboratory tests |
True |
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Nonretractable lancets are recommended for use on adults |
False |
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The puncture made during a fingerstick should be parallel to the fingerprint |
False |
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The name of the fingertip bone is the distal |
Phalanx |
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Another name for microhematocrit is |
Packed cell volume |
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If hematology tests are ordered and a fingerstick is to be performed, when should they be collected in the order of draw? |
First |
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One strategy for improving circulation prior to a fingerstick is to ________ the site |
Warm |
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Which of the following sites is recommended to collect capillary blood gases on a newborn? |
Lateral posterior area of the heel |
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Which of the following is the specimen of choice for testing the pH, pO2, and pCO2 of the blood? |
Arterial blood |
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EMLA, sometimes used for pediatric venipuncture procedures, is a |
Topical anesthetic applied to the child's arm before venipuncture |
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The best location for performing venipuncture on a hospitalized 7-year-old is |
In a treatment room |
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Which of the following is a complication that can result from multiple deep heelsticks on an infant? |
Osteomyelitis |
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Which of the following is a commonly inherited disease that is detectable through a newborn screening process in neonates? |
Sickle cell disease |
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The angle of the needle for scalp vein venipuncture of an infant should be |
15 degrees |
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After the blood collected from a heelstick is placed on the neonatal screening card, the card must dry in a horizontal position for a minimum of |
4 hours |
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When a skin puncture is performed on an infant, which of the following specimens is collected first? |
A) chemistry specimens B) hematology specimens C) clinical immunology specimens D) blood bank specimens |
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Blood spot testing for neonatal screening disorders should be performed before the newborn is |
72 hours old |
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Which of the following is an acceptable intervention to alleviate pain during venipuncture on a 5-year-old child? |
EMLA |
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Which is the preferred site for a heelstick? |
A previous puncture site on the heel |
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Which of the following disorders can be detected through neonatal screening? |
Cystic fibrosis |
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Which of the following gauge sizes should be used for the infant scalp venipuncture? |
23 gauge |
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The EMLA application can provide anesthesia for 45 minutes to 3 hours |
True |
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A 10 mL blood sample collected from a newborn is equivalent to 5-10 percent of the infant's total blood volume |
True |
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For children older than ________ year, a fingerstick is appropriate for blood collection |
1 |
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Children with spina bifida are particularly sensitive to |
Latex |
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Eutectic mixture of local anesthetics is also called |
EMLA |
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Blood smears for evaluation of cells must be made carefully. Which of the following features should be present? |
A feathered edge |
|
What is the average skin puncture depth appropriate for an adult? |
2-3 mm |
|
In making a blood smear or slide, after the drop of blood has been spread across the glass slide, what is the next step? |
Allow it to air dry |
|
Nails can grow at a rate of about |
0.1 mm per day |
|
Another instance when a fingerstick should not be performed on a patient is when the following has been ordered |
Coag tests |
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Phlebotomists should ask about which of the following prior to a fingerstick? |
If the patient has had anything to eat/drink |
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When performing a fingerstick, the puncture should be oriented ________ to or across the fingerprint ridges |
Perpendicular |
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Sucrose is effective in reducing pain and crying time during a blood collection procedure for an infant |
True |
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The EMLA application can provide anesthesia for 45 minutes to 3 hours |
True |
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Which of the following should a health care worker do before using reagent strips and/or controls in point-of-care testing? |
A) Check the date that the bottle was opened.B) Ensure the reagents and/or controls have been stored properly.C) Check the expiration date.D) All of the above. |
|
What is troponin T? |
A protein that is used to detect heart damage |
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Which term is synonymous with POCT? |
Near-patient testing |
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Most rapid methods for glucose testing require |
Skin puncture blood |
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Which of the following refers to the term hematocrit? |
PCV, crit |
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Which of the following blood assays can assist in the diagnosis and evaluation of anemia? |
Hemoglobin |
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In terms of quality-control procedures, SD stands for |
Standard deviation |
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Interpretation of a quality control chart is based on the fact that for a normal distribution |
99% of the values are within 3 SD of the mean |
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All POCT analyzers require |
Gloves |
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Control material should be analyzed how many times in order to determine the mean and SD? |
20-30 |
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In POCT quality control, tolerance limits are determined by pooling the data obtained during which test period? |
30 day |
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Which of the following is recommended to use to routinely clean the POCT instruments? |
5% bleach solution |
|
The Cholestech LDX system measures |
Total cholesterol |
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Which of the following is referred to as "bad cholesterol"? |
LDL |
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A QC chart in the clinical laboratory is based on the fact that for a normal distribution, what percentage of the values about the mean should be within +/- 2 SD? |
95% |
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The CoaguChek XS System measures which of the following? |
PT/INR |
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In laboratory abbreviations, PCV stands for |
Packed cell volume |
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A less than normal number of erythrocytes in a patient is referred to as |
Anemia |
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The hemoglobin A1c assay is used to monitor a patient's |
Blood glucose levels |
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Which of the following measures a cardiac monitoring analyte? |
ROCHE TROPT Sensitive rapid assay |
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The PT and INR testing is used in glucose monitoring |
False |
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A cardiac POCT is the ROCHE TROPT rapid assay |
True |
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Hct is the same as packed cell volume |
True |