Cengage phlebotomy finals

Bleeding time is affected the most when the platelet count falls below

100,000 per cubic millimeter

The life span of the erythrocyte is

100-120 days

The depth of cut made by puncture device for a heel stick on a full term infant should be no more than

2 mm

Which of the following needle gauges are the most common

21 gauge and 22 gauge

Successful collection of blood from superficial veins may be done with a butterfly collection set & which gauge needle

23

Which bore (diameter) of the needle is the smallest?

23 gauge needle

In performing an arterial puncture, you should puncture the artery using a

45-degree angle of insertion with the bevel of the needle facing the elbow

Once an arterial blood sample is obtained, the puncture site should have pressure held for at least?

5 minutes

People can listen at the rate of _______ words per minute & can speak at the rate of ______ words per minute

500-600; 100-200

All samples except 24-hour collection are best collected using:

A clean-catch midstream urine sample

Which is a true statement

A phlebotomist must use both verbal and nonverbal communication

The portion of the arm that is in front of the bend of the elbow is the

Antecubital fossa

Which of the following prohibits the knowing and willful payment or offer of any remuneration directly or indirectly in return for inducing , referring, or soliciting services

Anti- kickback law

An arterial puncture site is more likely to bleed because?

Arteries have higher pressure than veins

You cannot perform a venipuncture successfully after two attempts. You should?

Ask another phlebotomist to try

Infection from one's own flora is called an :

Autogenous infection

In which test should alcohol never be used to cleanse the vein puncture site

Blood alcohol level

Phlebotomists often have many duties and tasks which is the primary duty

Collecting venous blood samples

Which organization inspects the laboratory and requires it to meet additional standards of performance by sending proficiency test samples to laboratory throughout the year

College of American Pathologists (CAP)

What can happen if you squeeze the patient's finger too vigorously during a capillary puncture

D.BOTH A & B

According to standard precautions all used needles are to be disposed of in the following manner

Discarded intact

The idea of moving the child's attention from the procedure to something else is called

Distraction

A patient comes to have monthly prothrombin time (pt) collected . You must use a butterfly system because of the patients small veins . This is the only test you need to draw . What must you remember to do first

Draw a discard tube to remove the air in the tubing

Which of the following refers to an artificial shunt connection done by surgical procedure to fuse the vein and artery together & is used for dialysis only

Fistula

Coagulation/ hemostasis is usually in the same area as:

Hematology

Serum is described as hemolyzed in the presence of increased?

Hemoglobin from ruptured RBCs

Which of the following is the anticoagulant of choice for ph determinations , electrolyte studies & arterial blood gases

Heparin

An arterial puncture is more than likely to result in a hematoma than a venipuncture is because of

Higher pressure in the arteries

When drawing blood samples , which of the following be performed first

Identify the patient

What should you do if you accidentally stick yourself with a contaminated needle

Immediately wash the exposed area with soap and water, report the incident to your supervisor immediately.

What laboratory department tests a type and cross match

Immunohematology

The most common cause of blood culture contamination is

Improper skin preparation

All of the following are true EXCEPT

Lavender stoppered tubes are used for CBC , WBC , and platelet testing

You are to collect by fingerstick a green top, a lavender top, and a red top microcollection container. What microcontainer do you collect first?

Lavender top

A properly collected 24-hour urine sample:

May contain a chemical preservative

A phlebotomist is requested to draw an unconscious patient. The patients name & identification number on the armband agree with the information on the request form and computer labels , what else should be done to ensure patient identification

Nothing else is necessary

The oig is the

Office of Inspector General

What is the best way to restrain a child

Parent or caregiver holds the child

The testing that is done at the patient's bedside is known as

Point of care testing

if urine specimen testing is delayed by more than one hour , all of the following special precautions must be taken except

Refrigeration at 10 Celsius

The condition in which microorganisms (mainly bacteria) are circulating and multiplying in the patient's blood is called

Septicemia

Which of the following promotes faster centrifugation and a sample with fewer cells

Silicon

A CBC is collected by fingerstick from a patient. The results of the CBC show a lower WBC and platelet count than blood collected the previous day. What caused this change?

The blood was collected too slowly and partially clotted in the collection container.

Which of the following is true about micro capillary collection

The first drop of blood should be wiped away.

The safe area for heel puncture in an infant is

The most medial and lateral portion of the plantar surface

The concentration of medication that is effective and not toxic in patient management is called for

Therapeutic range

Glucose tolerance tests & therapeutic drug monitoring tests have which of the following collection requirements in common

Timed sample

An unconscious unidentified man is admitted to an emergency trauma center . What would be the system of choice to ensure patient identification?

Use a three-part identification system that utilizes a temporary armband and labels for specimens and blood to be transfused.

Five components that are found in a cbc with diff are

WBC, RBC, hemoglobin, hematocrit, differential

The most common source of laboratory error is

administrative

A sample may be rejected for testing if:

all of the above

Which statement is true about arterial punctures

all of the above

Which of the following is a reflex condition of the artery in response to pain or anxiety

arteriorospasm

Serum is described as icteric in the presence of increased

bilirubin, causing jaundice

The doctor orders a cbc , serum drug level , pt & a set of blood cultures . What is the order of draw

blood culture, light blue, red, lavender

Which of the following terms refers to sample collection where the phlebotomist is part of the laboratory team and is dispatched to hospital units to collect blood samples

centralized phlebotomy

The vein on the side of the arm that runs the length of the arm is the

cephalic vein

The oral glucose tolerance test:

detects borderline diabetes by measuring the patient's ability to dispose of a large oral intake of glucose

Which term refers to a daily variation in blood levels at a particular time of day

diurnal

Gloves should be worn

during all blood drawing

The results of a test can change because of

exercise, stress, and posture (all of these are correct)

Serum is described as lipemic in the presence of increased?

fats and lipids in a nonfasting sample

Which arteries are least suitable for drawing arterial blood gases

femoral

The process at the end of the clotting process that breaks down fibrin into small fragments that lead to disintegration of the clot is called

fibrinolysis

Gray top tube is usually drawn for which test

glucose

Which is generally the most common complication from phlebotomy

hematoma

What can happen if the tourniquet is left on too long before drawing blood

hemoconcentration

Warming the skin puncture site:

increases the blood flow through the arterioles and capillaries sevenfold

The anticoagulant heparin is used for blood gases & other chemistry tests it works by

inhibiting the conversion of prothrombin to thrombin

A hard, red spot that is the result of lymphocytes migrating to the injection site is a (n):

keloid

A patient sitting in a chair has fainted . Possible acceptable actions by the phlebotomist include all of the following except

leaving the patient unattended

Which of the following is a formed blood element, also known as a white blood cell

leukocyte

The buffy coat consists of

leukocytes and thrombocytes

The PT , aPTT, and fibrinogen assay tests use which color stoppered tube

light blue

Venipuncture is usually performed in the antecubital area . Which vein is usually the best to draw from

median cubital

Eye contact is a method of _____ communication

nonverbal communication

What does NPO mean?

nothing by mouth

The largest department the phlebotomist works with is the department of

nursing

The tourniquet should be on the arm no longer than

one minute

Which laboratory employee has the most education and is usually a consultant to other physicians

pathologist

Which of the following refers to the study of the nature & cause of disease

pathology

The most critical step in phlebotomy is

patient identification

What is the primary source of information when labeling a patient sample in the hospital

patient identification bracelet for patient name and identification numbers

What is the difference between plasma and serum

plasma contains fibrinogen; serum does not

A test performed after a meal is called

postprandial

The artery that lies on the thumb side of the wrist is the

radial

Which two arteries are occluded when performing the Allen test?

radial and ulnar

When serum is needed for testing which tube listed should be used?

red

an unexpected occurrence involving death or serious physical or psychological injury, or the risk thereof

sentinel event

The bevel of the needle :

should always be facing up when inserted into the skin

All of the following are ways to effectively work with children and families except

speak loudly to ensure comprehension

In a skin puncture procedure hemolysis can occur From

squeezing the heel or finger too hard

Pulling too hard or too fast on the plunger of the syringe will cause the vein to:

to collapse

Using a syringe is the best way to obtain blood from a vein that has a tendency to

to collapse

Why must the first drop of blood from a capillary puncture be wiped away?

to remove tissue fluid

The function of the erythrocyte is to

transport oxygen and carbon dioxide

Which disease requires the use of respiratory (airborne) precautions?

tuberculosis

As a general rule , you should never attempt a venipuncture more than

twice

To fill an evacuated tube with blood from a syringe, the phlebotomist should:

use a transfer device by removing the syringe needle after the safety shield has been engaged and then attaching the syringe to the transfer device for filling the evacuated tubes

Which of the following statements is true with regard to analyte changes due to exercise and stress

white blood cells increase