vocab

Question 1

Prevalence

Answer 1

of cases of disease in a population

Question 2

Incidence

Answer 2

# of new cases within a specified time period OVER
 the size of the population initially at risk

Question 3

Sensitivity

Answer 3

of patients with the disease & a positive test OVER # of diseased patients. . .Used to Rule OUT disease

Question 4

Specificity

Answer 4

of patients without the disease & a negative test OVER # of patients without the disease. . . Used to rule IN a disease

Question 5

Gold Standard

Answer 5

Most accurate measure

Question 6

Narrative Result

Answer 6

Descriptive value (x-ray report, path report)

Question 7

Qualitative result

Answer 7

Yes/No or Positive/Negative (UPT)

Question 8

Quantitative Result

Answer 8

Numeric Value

Question 9

Reference Interval

Answer 9

Range of normal values

Question 10

Likelihood Ratio (LR)

Answer 10

Probability of result in a pt with disease OVER probability of result in a patient without disease

Question 11

Likelihood ratio Postitive (LR+)

Answer 11

Probability of positive test in a diseased person OVER probability of positive test in a non-diseased person

Question 12

Likelihood ration negative (LR-)

Answer 12

Probability of negative test in a non-diseased person OVER probability of negative test in a diseased person

Question 13

Likelihood ration >1

Answer 13

Indicates the test result is associated with the disease

Question 14

Likelihood Ration <1

Answer 14

Indicates the test result is associated with an absence of the disease

Question 15

Positive PV

Answer 15

percentage of persons with a positive test results who DO HAVE the disease in question
TP / (TP + FP) x 100

Question 16

Negative PV

Answer 16

Percentage of persons with a negative test result who DO NOT have the disease in question
TN/ (TN + FN) x 100

Question 17

Why draw labs?

Answer 17

Screen: for treatable conditions in presymptomatic individuals
Diagnose: disease in symptomatic individuals
Manage: disease in individuals already diagnosed

Question 18

Hematopoiesis

Answer 18

the process of blood cell development

Question 19

What are the hematopoietic tissues in the fetus?

Answer 19

Liver (primary), thymus, lymph nodes and spleen

Question 20

What are the hematopoietic tissues in the baby?

Answer 20

entire marrow

Question 21

What are the hematopoietic tissues of an Adult?

Answer 21

Red bone marrow of the humerus, femur, pelvis, skull, vertebrae and ribs

Question 22

formed elemenets

Answer 22

blood cells

Question 23

formed elements of blood are…

Answer 23

erythrocytes (RBC’s), Leukocytes (WBC’s) and platelets

Question 24

How much blood volume do RBC’s take up

Answer 24

41-53% in males

36-46 in females

Question 25

How much blood volume do Leukocytes take up?

Answer 25

<1%

Question 26

How much blood volume is made up of plasma?

Answer 26

49-64%

Question 27

Erythrocyte

Answer 27

mature RBC

Question 28

Macrocyte

Answer 28

large erythrocytes (larger than 9mcm)

Question 29

Microcyte

Answer 29

A small, less than 6mcm nonnucleated RBC

Question 30

Reticulocyte

Answer 30

A young RBC, usually about 1-2 percent of RBC’s. . they stain blue

Question 31

What is the lifespan of a RBC?

Answer 31

120 days

Question 32

What is the function of a RBC?

Answer 32

To transport O2 through your body and to help remove CO2.