week 6 review chapter 12 & 13

An example of corrective action in phlebotomy is recollecting blood from a patient whose specimen was

clotted, hemolyzed, insufficient, or produced invalid results.

How is the quality control of the centrifuges performed?

By checking the speed calibration and rotations per minute

Sodium fluoride in a gray-topped tube prevents ________.

glycolysis

Quality control documentation may include recording all of the following EXCEPT:

Outdoor temperature

Therapeutic phlebotomy is most commonly used as a method of treatment for:

Hemochromatosis

If untreated, diabetes mellitus can lead to many complications including

blindness, kidney failure, and amputation due to circulation problems in the lower limbs.

Examples of corrective actions include

turning up the setting on a refrigerator that is too cold, discarding outdated reagents, or calling the manufacturer to correct an instrument problem.

How is the quality control of incubators and water baths performed?

By recording temperatures to determine if the instrument is at the correct temperature prior to use

Blood culture samples are placed in a/an ________ to allow time for microorganisms to grow if present.

incubator

For the most accurate results, what is the best time of day to draw plasma cortisol levels?

Between 7:00 A.M and 9:00 A.M.

Errors that occur with no predictable pattern are:

random errors

A repeat failure warrants immediate

calibration, repair or replacement of the system.

Random errors may have several different causes such as

operator procedural error, equipment failure, using outdated reagents, clerical errors.

The process of validation is required when

adopting the use of a new procedure or method for a test, or purchasing a new instrument to perform the test, and when a new lot of controls or reagents are put into use.

Blood and urine are collected at which time intervals for the GTT test?

30 minutes, 1 hour, 2 hours, and 3 hours

If the blood smear is too rounded

the drop of blood was not allowed to form a uniform line along the spreader slide before it was pushed.

The purpose of documenting problems is to

identify areas where improvements need to be made.

A glucose challenge screening test is done to test for:

Gestational diabetes

Differences in trends and shifts that may be due to performance among staff members are known as:

Systematic errors

How is the quality control of refrigerators and freezers performed?

By recording minimum and maximum temperatures on a daily basis

Temperature, blood pressure, pulse, and this test are performed on blood donors to assure the donor is healthy enough to donate blood.

hematocrit or hemoglobin

Which of the following is a system of activities that ensure that specific steps in a process meet acceptable standards?

Quality Control

Patients are given a large dose of glucose after fasting, which makes them prone to

Syncope

In which disorder does hemoglobin have an abnormal structure due to genetic mutation?

Sickle-cell anemia

A Levey-Jennings chart is:

A graph showing acceptable limits for QC

Results showing an upward or downward progression are referred to as a/an:

Trend

Which of the following terms refers to examining records for processes and procedures that were performed?

Audit

The most common classifications of pathogens are

bacteria, viruses, fungi, and protozoa.

If a patient is scheduled to have a timed lab test at 9:00 A.M. but the patient does not arrive until 3:00 P.M., the phlebotomist should

notify the licensed practitioner immediately.

How do you ensure quality control of specimen labeling?

Review of labels to determine if the required information is on the tube to ensure correct patient identification

Fixing problems that have occurred is known as:

Corrective action

An external analysis of routine samples in order to evaluate the performance of a laboratory and its personnel is:

Proficiency Testing