Ch. 6 Diagnostic Tests & Procedures Flashcards Preview

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Flashcards in Ch. 6 Diagnostic Tests & Procedures Deck (29)
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0
Q

blood chemistry

A

test of the fluid portion of the blood to measure the amounts of its chemical constituents (e.g., glucose & cholesterol)

1
Q

phlebotomy; venipuncture

A

incision into or puncture of a vein to withdraw blood for testing

2
Q

blood chemistry panels

A

a specialized battery of chemical tests on a single sample of blood

3
Q

basic metabolic panel (BMP)

A

a battery of tests used as a general screen of disease

4
Q

comprehensive metabolic panel (CMP)

A

tests performed in addition onto the basic panel for expanded screening

5
Q

blood culture

A

test to determine if infection is present in the bloodstream by isolating a specimen of blood in a culture and any microorganism growth is identified

6
Q

CD4 cell count

A

a measure of the number of CD4 cells (a subset of T lymphocytes) in the blood; used to monitor HIV and AIDS, normal range is 600-1500 cells in a given volume of blood

7
Q

erythrocyte sedimentation rate (ESR)

A

timed test that measures the rate at which RBCs settle through a volume of plasma

8
Q

partial thromboplastin time (PTT)

A

test to determine coagulation defects, such as platelet disorders

9
Q

thromboplastin

A

substance present in tissues, platelets, and leukocytes that is necessary for coagulation

10
Q

prothrombin time (PT)

A

test to measure activity of prothrombin in the blood

11
Q

prothrombin

A

protein substance in the blood that is essential to the clotting process

12
Q

complete blood count (CBC)

A

a common blood test performed as a screen of general health or for diagnostic purposes; results are often reported alongside normal values for comparison

13
Q

white blood count (WBC)

A

a count of the number of white blood cells in a given volume of blood

14
Q

red blood count (RBC)

A

a count of the number of red blood cells in a given volume of blood obtained via manual or automated laboratory methods

15
Q

hemoglobin (HGB or Hgb)

A

a test to determine the blood level of hemoglobin (in grams)

16
Q

hematocrit (HCT or Hct)

A

a measurement of the percentage of packed red blood cells in a given volume of blood

17
Q

blood indices

A

calculations of RBC, HGB, and HCT results to determine the average size, hemoglobin concentration, and content of RBCs to classify an anemia

18
Q

mean corpuscular (cell) volume (MCV)

A

calculations of the volume (size) of individual RBCs using HCT and RBC results; MCV = HCT/RBC

19
Q

mean corpuscular (cell) hemoglobin (MCH)

A

calculation of the content (weight) of hemoglobin in the average red blood cell using HGB and RBC results; MCH = HGB/RBC

20
Q

mean corpuscular (cell) hemoglobin concentration (MCHC)

A

calculation of the average hemoglobin concentration in each red blood cell using HGB and HCT results; MCHC = HGB/HCT

21
Q

differential count

A

determination of the number of each type of white blood cell (leukocyte) in a stained blood smear; each type is counted and reported as a percentage of the total examined

22
Q

red cell morphology

A

as part of identifying and counting the white blood cells, the condition, size, and shape of red blood cells in the background of the smeared slide are noted

23
Q

platelet count (PLT)

A

calculation of the number of thrombocytes in the blood; the normal adult range is 150,000-450,000 platelets in a given volume of blood

24
Q

bone marrow aspiration

A

need aspiration of bone marrow for pathologic examination

25
Q

bone marrow biopsy

A

pathologic examination of bone marrow

26
Q

lymphangiogram

A

an x-ray of a lymph node or vessel obtained after the injection of a contrast medium

27
Q

computed tomography (CT)

A

full body x-ray CT images used to detect tumors and cancers such as lymphoma

28
Q

positron-emission tomography (PET)

A

a full body scan useful in determining the recurrence of cancers or to measure response to therapy

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