Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
53 Cards in this Set
- Front
- Back
Role of phlebotomist?
|
trained to draw blood
|
|
Role of CLS, Med Tech
|
BS and Certified to do lab work
|
|
Role of CLT or Med. Lab technician?
|
Associate degree and certified to do lab work
|
|
Role of lab tests?
|
Discover,Confirm,Determine,Monitor,Detect recurrence
|
|
Test used to detect disease early when interventions can be effective?
|
Screening
(PAP,PSA,PPD) (Sensitivity) |
|
Test used on pts with sns/sxs of disease or abnormal screen?
|
Diagnostic
(Blood cultures) (specificity) |
|
True positive
inc'd = dec'd false negative |
Sensitivity
|
|
True negative
dec'd = inc'd false positive |
Specificity
|
|
Factors that interfere with test results
|
diet,meds,fluids,handling,collection,organ failure,posture,timing
|
|
Red Tube -->
Blue Tube --> |
centrifuged,no anticoag=serum
NA citrate,preserve clotting factors to measure PTT, PT time |
|
Purple tube -->
Tiger tube --> |
EDTA, prevent clots, study WBC
Gel to seperate serum and cells |
|
Gray -->
Yellow --> |
study glucose
blood cultures |
|
Green tube -->
|
study ammonia, carboxyhemoglobin
|
|
Liquid portion, collected without use of anticoagulant
|
Serum
|
|
Collect using anticoagulant, contains fibrinogen and clotting factors
|
Plasma
|
|
Blood composition
45% --> 55%--> with 90%? |
RBCs
Plasma/Water |
|
Study of formed elements in blood
|
Hematology
|
|
Hematology studies what transport functions?
|
oxygen,nutrients,immunity,waste products
|
|
Process of blood development and production?
|
hematopoiesis
|
|
Blood cells develop in bone marrow and differentiate into (2) types of lines?
|
myeloid and lymphoid
|
|
Myelocytes become leukocytes and are differentiated into (2) catergories?
|
agranular
granulocytes |
|
Granulocytes
|
eosinophils,basophils,neutrophils
|
|
Agranular
|
lymphocytes
|
|
production of neutrophils,basophils,eosinophils,monocytes
|
myelopoiesis
|
|
3 components of CBC
|
WBC,RBC,Hg
|
|
Protein consisting of globin,protoporphyrin, and FE
|
hemoglobin
|
|
NL hemoglobin levels:
|
male - 14-18
female - 12-16 newborn - 17-23 Panic - <8 or >20 |
|
Packed cell volume
|
Hematocrit
|
|
NL Hct levels:
|
male- 40-54%
females - 37-47% newborns- 50-62% Panic <24% |
|
Causes of inc'd Hct
|
smokers,high altitude,dehydration
(inc'd RBCs) |
|
Causes of dec'd Hct
|
megaloblastic anemia,blood loss,Fe def. anemia,pregnancy
(dec'd RBC) |
|
Avg volume of red cells
= Hct/RBC |
MCV
|
|
Weight of Hg of RBC
= HgB/RBC |
MCH
|
|
Avg. concentration of Hg in a volume of red cells
=HgB/Hct |
MCHC
|
|
Measure of the degree of anisocytosis, used to determine thalessemia,Fe def. anemia
|
RDW
|
|
Formed in bone marrow,role in hemostasis
|
Platelets
(NL 140-400000) (critical <50000,>1mil) |
|
Red blood cell production in the bone marrow
|
erythropoesis
|
|
Variation in RBC size
|
Anisocytosis
(normocytic,microcytic - fe def.anemia,macrocytic - B12 folate def.anemia) |
|
Variation in shape
|
Poikilocytosis
|
|
Spherocyte
Target cell |
-no central pallor,osmotic fragility
-Abn Hg, clump in center,liver disease |
|
Shistocytes
Burr Cells ovalocyte |
-fragments,heart valves
-projections, anorexia,burns,liver disease -oval,sickle cell |
|
Tear drop
Stomatocytes Helmet cells |
-cry for bone marrow
-smily cells,liver disease,lupus -pac man, G6PD |
|
Basophilic stippling is caused by
|
metal,lead poisoning
|
|
Howell-jolly bodies are found in
|
post splenectomy,DNA remenent new periphery
|
|
Bluish-purple dots in grps, represent FE in RBC
|
siderocytes
|
|
Denatured protein in G6PD
|
Heinz bodies
|
|
Stack of coins, due to multiple myeloma
|
Rouleaux formation
|
|
Contain retics, reflect responsiveness of erythropoetic activity-esp. for anemics
|
reticulocytes
|
|
Rate at which RBC settle out of anticoagulated blood in 1 hr
|
ESR
|
|
ESR is most usefull in
|
polymalgia rheumatica,temporal arteritis
|
|
Inc'd ESR
|
infection,inflammation,pregnancy
|
|
Dec'd ESR
|
microcytic
|
|
NL ESR
|
allergies,viral infxns,cirrhosis,malaria
|