LABORATORY

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Ch. 3 MA cert test

sterile swab

The most common device for obtaining cultures.

Properly collected sputum specimen should contain...

,,mucous coughed up from the lungs.

Stool specimen mixed with urine...

...is not an appropriate specimen for examination.

Pick up by the lab

the most reliable and timely method of transporting microbiologic specimens.

dry ice

should not be used for packing when sending a specimen through the mail.

etiologic agent

refers to a living microorganism or its toxin that may cause human disease

when preparing a wet mount,...

...mix a small amount of the specimen with 0.9% sodium chloride on a glass slide.

Gram-positive bacteria

retain dye, turning purple

37degrees celcius

the optimal temperature to promote growth of bacteria in a culture medium.

Blood agar

Most common type of culture medium used in a lab

Bacteria placed in a culture plate...

...grows sufficiently within several hours

An MA needs further training to be able to perform...

...microbiologic tests, such as sensitivity tests, and to interpret cultures of specimens.

hypernatremia

excess of sodium in the blood

A quality control system

is an ongoing system to evaluate quality of medical care that is being provided.

bacteria

is found in soil and water

coagulation

The process of blood cells clumping together to form a clot.

The most important rule to remember when using a centrifuge is

always balance the tubes placed inside

What causes urine to appear hazy or cloudy

mucus, bacteria, amorphous crystals

The intensity of urine color reflects

the concentration

A genitourinary tract infection would be primarily be evidenced by a microscopic containing many

white blood cells

When performing a microscopic, the evaluation of each element present in the urinary sediment is based upon the....

average number found in 10 fields

20 or 21gauge

The approximate gauge needle to use when performing phlebotomy of veins in the forearm

10,000

When doing a red cell count the factor by which the cells counted are multiplied

anemia

The hematocrit reading is low in cases of this

10X

When focusing the microscope, one should begin with this objective.

lens paper

Used to clean the lens of the microscope

400X

When using a microscope with a 10X ocular and the 40X objective in place, the total magnification is...

HPF

When performing a microscopic urinalysis, red and white blood cells are reported per...

The macroscopic exam of urine consists of ...

observing the color and character

The pH of a urine specimen is checked to determine

acidity or alkalinity

WBCs

Upon microscopic examination of urine, a UTI would be indicated by the presence of numerous...

11 mark

When using a standard WBC pipette for determining a WBC count, the blood is drawn to the 0.5 mark. The diluting fluid is drawn to the ...

When performing a differential WBC, a basophil will be recognized by

large blue to purple staining granules

segmented neutrophils

The WBC most often seen when performing a differential

When a venipuncture is performed using a lavender top vacutainer tube, the sample...

is commonly used for hematology testing, and does not clot because an anti-coagulant has been mixed with the whole blood

gram stain

The most common bacteriology stain

An organism determined to be staphylococcus appears...

round and grouped in clusters

Sensitivity testing

is done to determine the drug of choice and is commonly done on Mueller-Hinton agar

PA & lateral

The most common positions for chest x-rays

lead

Substance used to prevent x-ray exposure

Gram staining is done to determine

whether a bacteria is gram positive or gram neative

Q wave

On a normal ECG tracing, the first wave to show downward deflection

reduce skin resistance

The purpose for applying paste or jelly when running an ECG

Systolic pressure

The first sound heard when taking blood pressure

hemacytometer

a counting chamber utilized in manual microscopic methods

37 degrees Celsius

The equivilent to normal body temp of 98.6 F

Active immunity will be produced

when the antigens of microorganisms are injected into the patient

When autoclaving surgical instruments, the timing period begins

when adequate pressure has built up

IM

Large amounts in injectable medication, at least 2ml or more

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