Chapter 11 Flashcards
Which of the following tests is measured using the CoaguChek XS system
PT
What is a cannula
Tubular instrument used to gain access to venous blood
What is the reason for collecting a 24 hour urine specimen from a patient
Test for cortisol
During a glucose tolerance test which procedure is acceptable
Fasting blood collection is performed and then a standard amount of glucose drink is given to patient
Of the two arteries compressed on the patient during the modified Allen Test which one of those arteries is listed below
ulnar artery
Which of the following supplies if not needed to test with the HemoCue system
tourniquet
If patient allergic to iodine alternative cleansing solution used
Chlorhexidine gluconate
Random specimen
Reason -Most convient to obtain
Use- Routine UA
First urine in the morning
Reason-urine excretion is most concentrated
Use-quantitive and qualitive protein, nitrate, microscopic analysis
Fasting
Reason-metabolic abnormalities are suspected
Use-glucose level determination for diabetes mellitus testing
Clean-catch midstream
Reason- specimen is free of contamination
Use-culture for bacteria and or microscopic analysis
Timed ex. (2hour, 4 hour, or 24 hour)
Reason- the excretion rate of the analyte can be determined
Use-creatinine clearance test, urobilinogen determinations, hormone studies
Tolerance test
Reason- timed blood and urine specimen are obtained to detect metabolic abnormalities
Use-GTT and other tolerance tests
Types of urine specimens
- Random
- First urine of morning
- Fasting
- Clean catch midstream
- Timed (ex. 2 hr, 4hr, or 24 hr)
- Tolerance test
Cannula
Tubular instrument used in patients with kidney disease to gain access to venous blood for dialysis or blood collections
Fistula
Artificial shiny in which the vein and artsy have been fused through surgery.
It is permanent connection tube located in the ark of patients undergoing kidney dialysis
The 2 hour postprandial ( after a meal) glucose test
Can be used to screen patients for diabetes ( including gestational diabetes )
Glucose levels in serum specimens collected 2 hrs after a meal are rarely elevated in normal patients
Diabetes patients usually have increased values 2 hrs after a meal
For this test patient should be placed on high carb diet for 2-3 days before the test.
Day of test patient should consume 75 grams of glucose
Should eat orange juice ,cereal with sugar,toast,and milk
Specimen is taken 2 hrs after patient finishes breakfast
Glucose level of this test determines if physician should test for GTT or A1c is needed
The American Diabetes Association Standards of Care-2011
Recommends patients that have symptoms suggesting problems in carbs,sugar such as diabetes mellitus the 2 hr oral glucose tolerance test (OGTT or GTT) can be effective
Blood cultures
Often collected from patients who have fevers of unknown origin (FUO)
Sometimes during the course of a bacterial infection in one location of the body bacteremia (presence if bacteria in the blood) or septicemia (presence of pathogens in the circulating blood stream sometimes called blood poisoning) may result and become the dominant clinical feature
Septicemia is a major cause of death in United States
Blood cultures help identify bacterial organism causing the infections
Venipuncture is the method used for collecting blood specimens for blood cultures
