MedCa Exam 91 Questions with Verified Answers
Pathology - CORRECT ANSWER The study of nature and the cause of disease
How many liters of blood does
... [Show More] the body contain? - CORRECT ANSWER 5 liters
Erythrocytes - CORRECT ANSWER Red blood cells
Leukocyte - CORRECT ANSWER White blood cell
Thrombocytes - CORRECT ANSWER Platelets
120 days - CORRECT ANSWER How long does mature red blood cells live once they enter blood stream
Hemoglobin - CORRECT ANSWER Iron containing pigment of red blood cells
Pre-analytical phase - CORRECT ANSWER Phlebotomist are primarily responsible for this phase of lab testing
Blood collected in neonatology department - CORRECT ANSWER This is Done for patients who are hours to a few days old
Pharmacy department - CORRECT ANSWER Primary consultant on timing for collecting blood for drug levels
Where blood cells begin formation - CORRECT ANSWER Lymph nodes and bone marrow
Flowchart - CORRECT ANSWER Used in quality improvement methodologies and designed to assist in breaking out components into diagram to understand a process
Quality improvement for specimen collection involve - CORRECT ANSWER -Phlebotomist technique
-Recollection rates
-Frequency of hematomas
Pareto charts - CORRECT ANSWER Designed to assist in making bar charts that show frequency of problems
Anemic - CORRECT ANSWER A person who has too little hemoglobin or a decreased number of red blood cells
Type and cross match - CORRECT ANSWER Process of determining if a person will react after a transfusion
Total volume of formed elements of blood - CORRECT ANSWER 45%
total volume of blood liquid makes up - CORRECT ANSWER 55%
Serum - CORRECT ANSWER When blood is removed from body, blood clots and the liquid portion is called
Centrifuge - CORRECT ANSWER Instrument used to speed the removal of serum by spinning the blood
Supine position - CORRECT ANSWER Lying face up on back
RFID - CORRECT ANSWER Identification tag using silicon chips and a wireless receiver
Normal Blood pH range - CORRECT ANSWER 7.35 to 7.45
Blood for lead levels are collected in - CORRECT ANSWER Tan topped tubes
2 hours - CORRECT ANSWER Within how many hours should Serum be transported to lab for testing and separated from red blood cells, preventing erroneous results
Acid citrate dextrose - CORRECT ANSWER Anticoagulant used in blood donations
To avoid micro clotting in tube, important that blood be collected - CORRECT ANSWER Why should the purple topped tube be gently inverted a minimum of 8 times
Why should Clean gloves be put on in front of patient - CORRECT ANSWER It is a reassuring safety conscious gesture for both patient and worker
Pneumatic tube system - CORRECT ANSWER Most efficient and safe methods of specimen transportation in large health care organization
Royal blue topped tube - CORRECT ANSWER Measurement of blood cooper trace element
Computerized labels using bar codes - CORRECT ANSWER Most reliable method for avoiding transcription errors in specimen collection
Dorsal side of hand and wrist - CORRECT ANSWER If veins in arm cannot be used for venipuncture where the preferred alternative veins lie
Glucose level - CORRECT ANSWER Most commonly requested timed specimen
When collecting blood in evacuated tube with an anticoagulant, what is the importance of having correct volume of blood? - CORRECT ANSWER It provides the correct blood additive ratio
When are Skin puncture techniques are most often used? - CORRECT ANSWER When Small amounts of blood are needed for testing, neonate or anemic
How many chromosomes are in human cells - CORRECT ANSWER 46 chromosomes
Therapeutic phlebotomy is used in treatment of - CORRECT ANSWER Polycythemia
In relation to veins, what does occluded mean - CORRECT ANSWER Obstructed
Which finger has a pulse - CORRECT ANSWER Thumb
Last step in any phlebotomy procedure, including skin puncture - CORRECT ANSWER Check that the bleeding has stopped and thank the patient for cooperating
What causes pooling of blood in veins - CORRECT ANSWER Tourniquet
What is the Best way to decontaminate phlebotomist hands if they are visibly dirty with dust and dirt - CORRECT ANSWER Wash hands with soap and water
Alcohol should be allowed to dry for how many seconds before venipuncture - CORRECT ANSWER 30-60 seconds
During venipuncture, what is the best angle for inserting the needle into the skin - CORRECT ANSWER 15-30 degrees
During venipuncture procedure, what does phlebotomist do after needle is inserted and blood begins to flow - CORRECT ANSWER Release the tourniquet
The term butterfly refers to - CORRECT ANSWER The winged infusion set
During venipuncture, the needle should always be inserted with - CORRECT ANSWER Bevel side up
What is the antecubital area - CORRECT ANSWER Slightly below the elbow
What is importance of hand hygiene techniques - CORRECT ANSWER It significantly reduces the number of outbreaks of infections
Why should blood and urine specimens for microbiological culture be transported to the labs quickly - CORRECT ANSWER To improve the likelihood of detecting pathogens
Approximately how long does it take a normal blood specimen to clot - CORRECT ANSWER 30-60 minutes
Quality control records include information about - CORRECT ANSWER -Proper use and storage
-Expiration dates and stability
-Precision and accuracy of testing supplies/reagents
Glycolytic action refers to which condition - CORRECT ANSWER Breakdown of glucose
Bar codes in phlebotomy applications can be used for - CORRECT ANSWER -Specimen accession numbers, test codes
-Product number, inventory expiration dates
-Patient names, DOB, patient identification number
Which anticoagulant is found in Royal blue topped tube - CORRECT ANSWER No anticoagulant
Lithium heparin is suitable anticoagulant for which study - CORRECT ANSWER Stat chemistry
Preferred anticoagulant for collection of whole blood for STAT situations in clinical chemistry - CORRECT ANSWER Heparin
Which Needle gauges has smallest diameter - CORRECT ANSWER 23, the larger gauge has the smaller the needle
Intravenous device used in collecting blood from patients who are difficult to collect blood by conventional methods - CORRECT ANSWER Butterfly needle
Blood cell count requiring whole blood collection - CORRECT ANSWER Purple topped tube
What tube should Alkaline phosphate never be collected in - CORRECT ANSWER Gray topped tubes
Color coding for needles indicates - CORRECT ANSWER Gauge
Light sensitive blood analytes - CORRECT ANSWER Bilirubin
Monoject monoletter - CORRECT ANSWER Safety device for collecting capillary blood
Yellow topped vacuum collection tube has what additive - CORRECT ANSWER Sodium polyanetholesulfonate (SPS)
For newborns the penetration depth of lancets for blood collection must be less than - CORRECT ANSWER 2.0 mm
Cytogenetic analysis requires whole blood collected in which tube - CORRECT ANSWER Green topped tube
Report form for lab results include - CORRECT ANSWER -Patient and physician identification
-Date and time collected
-Reference ranges
pre-analytic variable that might affect lab testing results - CORRECT ANSWER Patient ate a hearty breakfast
Hemolyzed specimens - CORRECT ANSWER Cause Chemical interference with lab assays
Blood specimen with separation device should be centrifuges how many times - CORRECT ANSWER 1 time
To chill a blood specimen as transported, healthcare worker should use - CORRECT ANSWER Icy water
Handwritten info cannot be converted into bar code symbols - CORRECT ANSWER True
Homeostasis refers to - CORRECT ANSWER Steady state condition
Chemical substance that prevents blood from clotting - CORRECT ANSWER Anticoagulant
Systolic pressure - CORRECT ANSWER Pressure when heart is contracted
120/80, the 120 is - CORRECT ANSWER Systolic pressure
Diastolic pressure - CORRECT ANSWER Pressure when heart is relaxed between beats
Median cubital - CORRECT ANSWER The vein most preferred when drawing blood
Autoclave - CORRECT ANSWER An instrument for sterilizing that uses steam under pressure
Sharps container - CORRECT ANSWER Specially labeled puncture resistant container for disposal of needles, scalpels and syringes
Hand washing - CORRECT ANSWER Single most important way to prevent spread of infection in health facility
What are the Components in a chain of infection - CORRECT ANSWER -Source
-Poor isolation technique
-Susceptible host
Nosocomial - CORRECT ANSWER Patient develops infection during hospital stay not present beforehand
Primary purpose of infection control - CORRECT ANSWER Prevent spread of infection within hospital and other health facilities
Under universal precautions all used needles are to be disposed of in following manner - CORRECT ANSWER Discarded intact
A potential source of infectious material from a patient in protective isolation includes - CORRECT ANSWER None the phlebotomist is a potential threat to patient
When coming in contact with patients under protective isolation it is necessary to wear - CORRECT ANSWER -Mask
-Globes
-Gown
Cultural sensitivity for phlebotomist involves learning about - CORRECT ANSWER The Skin's sensitivity to pain
Refer to patients right/left arm - CORRECT ANSWER When speaking with patient about which arm to use for venipuncture, how should phlebotomist refer to r/l arm?
Biopsy tissue - CORRECT ANSWER The Specimen taken to anatomic pathology [Show Less]