Phleb Ch. 11 – Flashcards
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Forsenic toxicology is concerned with
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toxin contamination in water resources
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TB test administration involves
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injecting the antigen just under the skin
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The following are urine drug screen patient collection requirements as defined by the NIDA
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a proctor is required to be present at the collection time to verify the sample, appropriate labeling is not required because chain of custody is not needed, specimen must be sealed and placed in a locked container during transport
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The correct order when collecting a blood culture is
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select equipment, perform friction scrub, cleanse bottle tops, perform venipuncture
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False-positive results of lactose tolerance tests have been found in all of the following
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congenital cystic fibrosis, patients with flat glucose tolerance test, slow gastric emptying
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If an assumed parent in a paternity case is not excluded by ABO grouping, any of the following testing may be required
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buccal sample for DNA, human leukocyte antigen, white blood cells enzymes
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All of the following are allowed to order paternity testing
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child support agent, defense attorney, family physician
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The recommended blood culture site disinfectant for infants 2 months and older
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chlorhexidine gluconate
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The following statements are true about autologous donations are true
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blood can be collected up to 72 hours before surgery, patients must have a written order from their physician, using the patient's own blood eliminates many risks
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The CPD additive in a donor unit of blood serves to do all of the following
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prevent the blood from clotting, provde nutrition for the cells, stabilize the pH of the plasma
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A transfusion of incompatible blood is often fatal because it
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causes lysis, or rupturing of red cells within the vascular system
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When using a cell salvaging procedure during surgery, what analyte must be evaluated before tha patient's blood can be re-infused?
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free hemoglobulin
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All of the following are donor unit collection principles
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collection bag is placed on a mixing unit while the blood is being drawn, collection unit is a closed system connected to a tube and 16-18g needle, unit is filled by weight, which normally corresponds to 450 mL when full
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You are asked to collect the blood specimen on a patient undergoing a d-xylose test. What type of tube would most likely be required
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gray top
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Some individuals lak the necessary mucosal enzymes to convert which of the following sugars so that it can be digested
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lactose
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all of the following instructions are given to a patient when preparing for D-xylose testing
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drink 1 gallon of water per day for 3 days prior
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which of the following sample types is used in D-xylose testing?
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urine
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Potassium plays a major role in all of the following
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muscle function, nerve conduction, osmotic pressure
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Which test is used to diagnose failure of the small intestine to absorb nutrients?
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D-xylose absorption
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ARD or FAN blood culture bottles:
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remove any antibiotics that are in the blood
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Septicemia is
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microorganisms found in the blood
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The MedPoint Transfusion System is a:
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portable bedside barcode scanning system and printer
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Eligibility requirements for donating blood include:
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age 17-66 years, 110 pounds or more
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Identify the condition in which a unit of blood is withdrawn from a patient as a treatment
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hemochromatosis
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Which specimen requires especially strict identification and labeling procedures
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crossmatch
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the following are classified as drugs of abuse
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amphetamines, cannabinoids, crack and ice
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Donor units of blood are typically collected using needles that are
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16-18 gauge
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A typical unit of donated blood contains approximately
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450 mL
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Which of the following tests is collected from patients with FUO to rule out septicemia?
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blood cultures times two
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All of the following types of tubes can be used to collect blood for type and screen
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lavender colored top, non-additive red top, pink stopper EDTA
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Which of the following tests if collected using special skin decontamination procedures?
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set of blood cultures
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Which type of test is performed to determined the probability that a specific individual was the father of a particular child
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paternity
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Which specimen tubes must contain a 9:1 ratio of blood to anticoagulant to be accepted for testing?
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coagulation
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Why would blood cultures be collected with an anticmicrobial adsorbing resin?
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the patient is taking a broad-spectrum antibiotic
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What type of additive is best for collecting an ethanol specimen?
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sodium fluoride
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Which blood culture container is inoculated first when the specimen has been collected by syringe?
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anaerobic vial
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The most critical aspect of blood culture collection is
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skin antisepsis
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A blood culture collection site can typically be cleaned with any of the following
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chlorhexidene gluconate, sodium hypochlorite, tincture of iodine
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Which of the following additives is sometimes used to collect blood culture specimens?
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CPD
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Which type of specimen may require collection of a discard tube before the test specimen is collected?
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coagulation
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This is an abbreviation for test that evaluated platelet plug formation in the capillaries
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Bt
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Which test is used as a screening test for glucose metabolism problems?
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2-hour-PP
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All of the following activities can affect glucose tolerance test results
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chewing sugarless gum, drinking tea without sugar, smoking low-tar cigarettes
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When does the timing of specimen collection begin during a glucose tolerance test?
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when the patient has finished the glucose beverage
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A phlebotomist arrives to collect a 2-hour postprandial glucose specimen on an inpatient and discovers that 2 hours have not elapsed since the patient's meal. What should the phlebotomist do?
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Ask the patient's nurse to verify the correct collection time
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A patient undergoing a glucose tolerance test vomits within 30 minutes of drinking the glucose beverage. What action should the phlebotomist take?
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Notify the nurse or physician immediately to see if the test should be rescheduled
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Increased blood glucose is called
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hyperglycemia
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when does a blood glucose level in normal individuals typically peak after glucose indigestion?
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1/2 hour to 1 hour
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Which of the following must remain consistent to therapeutic drug monitoring?
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position of the patient
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Patient preparation before a GTT involves all of the following
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eating meals with measured carbohydrate 3 days prior, fasting for at least 12 hours before beginning the test, no smoking or chewing gum before or during the test
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Which of the following can be used to clean a site before blood alcohol specimens collection?
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Zephiran chloride
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Which of the following may require "chain of custody" documentation when collected?
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drug screen
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The purpose of TDM is to
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determine and maintain a beneficial drug dosage
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Which of the following tests would not be subjec to therapeutic drug monitoring?
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phenylalanine
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A peak drug level has been ordered for 0900 hours. You draw the specimen 10 minutes late because of unavoidable circumstances. What additional action does this necessitate?
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Record the actual time of specimen collection
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A trough drug level is collected
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immediately before the next scheduled dose is given
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Which test requires the collection of multiple specimens ?
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GTT
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Timing of collection is most critical for drugs with short half-lives such as
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gentamicin
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A bleeding time test assesses the functioning of which of the following cellular elements?
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thrombocytes
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The most common reason for glucose monitoring through point-of-care testing is to:
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monitor glucose levels for diabetic care
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A trace-element-free tube is the best choice for collecting a specimen for all of the following
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sodium
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The definition of toxicology is
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scientific study of poisons
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Which test typically has the shortest TAT if performed by point-of-care testing?
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BUN
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Which of the following is not a point-of-care testing analyzer?
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BactALERT
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Monitoring blood coagulation through point-of-care testing may be performed during all of the following
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cardiac bypass, coumadin therapy, heparin therapy
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Which of the following is one of the most common beside or point-of-care testing?
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glucose
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Which of the following tests is used to monitor heparin therapy?
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ACT
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Which of the following equipment is not needed for a bleeding time test?
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vinyl tourniquet
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At what intervals is the blood blotted during a bleeding time test?
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30 seconds
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When performing the bleeding time test, a sphygmomanometer is inflated to?
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40 mm Hg
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All of the following will prolong a bleeding time test:
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an abnormally low post-op platelet count, recent ingestion of aspirin by the patient, touching the wound with the filter paper
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This test can determine if an individual has developed antibodies to a particular antigen
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skin test
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Ionized calcium plays a critical role in all of the following
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blood clotting, cardiac function, nerve impulses
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Below-normal blood pH is refereed to as
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blood acidosis
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Which of the following is protein that is specific to heart muscle?
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TnT
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B-type natriuretic peptide is a cardiac
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enzyme
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This test is used to evaluate long-term effectiveness of diabetes therapy
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hemoglobin a1c
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This test is also referred to as packed cell volume
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HCT
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This test detects occult blood
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guaiac
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Which of the following is a skin test for tuberculosis exposure?
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PPD
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The hormone detected in urine pregnancy is:
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HCG
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Which point-of-care blood glucose analyzer uses a microcuvette instead of a test strip?
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HemoCue 201
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An uncorrected imbalance of this analyte in a patient can quickly lead to death
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potassium
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What type of specimen is needed for a guaiac test?
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feces
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How much diluted antigen is injected when performing a PPD test?
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0.1 mL
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"Erythema" means
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redness
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When reading a patient's tuberculin test, there is an area of induration and erythema that measures 7 mm in diameter. The result of the test is:
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doubtfull
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Point-of-care detection of Group A strep normally requires a:
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throat swab
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Which of the following cannot be detected in urine on a special reagent strip that is dippedin the urine specimen and then compared visually against color code on the reagent strip container?
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thrombin
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which point-of-care test helps a physician differentiate chronic obstructive pulmonary disease and congestive heart failure?
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BNP
