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95 Cards in this Set

  • Front
  • Back
undetected error in blood bank specimens can result in?
administration of an incompatible blood product and possiblity of a fatal transfusion reaction
list the blood bank label requirements
check label against ID braclet( it is only good for 72 hrs)
full name
hospital ID# or SS#
DOB
date and time of collection
phlebotomist initials
witness (must be 2 persons in room during collection)
room # and Bed # (optional)
most common test performed by blood bank?
Test determines
type and screen
blood type (ABO) and RH factor (+/-)
compatibility during crossmatch
Done on what blood parts?
if incompatible what happens?
sutability to be mixed
plasma or serum (patient)
RBCs(donor)
can be fatal(because of aggulation and lysis of RBCs
aggulation
clumping
lysis
rupturing
lookback program ( in ref to blood collection)
requires notification to all blood recipients when a donor for a blood product they have received has turned positive for a transmissible disease
autologous donation
process by which a person donates blood for his own use.
several weeks normal..can be 72 hrs
FUO
fever of unknown orgin
bacteremia
bacteria in the blood
septicemia
microbes or their toxins in the blood
blood cultures help determine?
presence and extent of infection..type of organism..antibiotic most susceptible..effectiveness of treatment
blood cultures typically ordered when a FUO is?
immed before or after anticipated fever spikes(bacteria most likely to be present)
blood culture specimen bottles contain?
media(nutrient broth..encourages growth of microbes)
blood culture specimen typically collected in sets of two..they are?
which collected first?
aerobic(with air)
anaerobic(without air)
collect anaerobic first with syringe
aerobic first with butterfly(because of air in tubing)
skin antisepsis for blood culture
destruction of microorganisms on the skin
10% povidone or
1-2% tincture of iodine or
benzalkonium Chloride (special cleaning pads)infants 2 mos and older and PTs idione sensitive
chloroprep(dry for 5 min)
chlorhexidine gluconate/isopropyl alcohol preparations (one step application effective with a 30 second scrub)
PT on antimicrobial therapy
collect blood culture in an?
(antibotic therapy)
ARD-antimicrobial removal device (or)
FAN-fastidious antomicrobial nuturalization bottles
ARD blood collection bottles contain
resin
FAN blood collection bottles contain
activated charcoal
coagulation sodium citrate tubes must be filled until vacumme exhausted. WHY?
9:1 ratio of blood to anticoagulant a must
D-Xylose absorption test used to diagnose?
malabsorption or failure of the small intestine to absorb nutrients
what is D-Xylose?
simple sugar
pentrose
present in fruit not normal for blood or urine unless foods are eaten that contain it
PP-postprandial
after a meal
blood collected 2 hrs after a meal rarely are elevated in what?
elevated indicates what?
glucose
diabetic
2-hour PP screens for
(glucose test 2 hrs after meal)
diabetes and other metabolism problems
GTT
diagnosis ?
(glucose tolerance test)
carbohydrate metabolism problems
major carb is blood is?
glucose(bodys source of energy)
OGTT
evaluates?
(oral glucose test)
body's ability to metabolize glucose
2 major types of glucose disorders?
hyperglycemia(diabetes mellitus-glucose increased)
hypoglycemia(decreased)
lactose tolerance test used to determine
Pt lacks enzyme (mucosal lactase) that is necessary to convert the milk sugar lactose into glucose and galactose
Pt lacks enzyme (mucosal lactase) suffers from
gastrointestinal distress and diarrhea following ingestion of milk or other lactose containing food
lactose tolerance test is perfomed in same manner as?
2-hour GTT
paternity testing can also be performed by?
amniocentesis or chorionic villus sampling(projections of vascular tissue, have same genetic makeup as fertilized egg, become fetal portion of placenta)
TDM
used for?
timing
Therapeutic drug monitoring
testing of drug levels at specific intervals
timing is critical
for a drug to be benefical the TDM, peak (max) levels must not? and the trough (min) levels must?
exceed toxic levels
remain within therapeutic range
therapeutic phlebotomy involves?
used to treat?
withdrawl of large quanities of blood(unit, 500mL)
polycythemia(overproduction of RBCs)
hemochromatosis(excess iron deposits in tissues)
chain of custody
when forensic specimens collected-special protocol and form
ETOH ethanol test
skin antispesis?
tube used?
Blood alcohol test
povidone iodine or (BZK)benzalkonium chloride
gray top(sodium floride)
Drug screening
NIDA(national institute on drug abuse) collection requirements?
-Prep:
explain test purpose and procedure
advise of rights
obtain witnessed signed consent form
-collections:
special area
proctor
labeled propely (establish chain of custody
sealed and placed in a clocked container
documentation carefully maintained
POCT
point of care testing
brings laboratory testing to the PT
aka..AST-alternate site testing
or ancullary
or bed side
or near-patient
BT test
used for?
Bleeding time
evaluates platelet plug formation in capillaries to detect platelet function disorders and capillary integrity problems
also used in diagnosing problems with hemostasis and as a presurgical screening test
accuracy of the results depend on technique in what test
BT
BT test
procedure
bleeding time
performed on volar(inner) lateral surface of forearm, using BP cuff to maintainconstant pressure
INR
international normalized ratio
tests on whole blood from a finger stick
ACT
activated clotting time
HMT
Heparin management test
Pt test used to monitor
warfin(coumadin) therapy
APTT/PTT used to screen for?
bleeding disorders prior to surgery
investigate bleeding or clotting disorders
detect clotting factor deficiencies
monitor low dose heparin therapy
ACT test analyzes activity of
coagulation factors (used to monitor heparin therapy
HMT test is used for
testing high dose heparin monitoring needed in cath labs and surgery
ABGs measured by POCT
what measured?
pH(potential hydrogen, acid-base balance)
PCO2(partial pressure of carbon dioxide)
PO2(partial pressure of oxygen)
PCO2 partial pressure of carbon dioxide is a measure of
pressure exerted by dissolved co2 in blood plasma, proportional to PCO2 in aveoli
(indicator of how well air is exchanged between blood and lungs)
increase is hypoventilation
decrease is hyperventilation
PO2 partial pressure of oxygen is a measure of
pressure exerted by dissolved O2 in blood plasma
(indicates the ability of the lungs to diffuse O2 through the alveoli into the blood
evalutes the effectiveness of oxygen therapy
five most common electrolytes measured by POCT
Sodium(Na+)
potassium (K+)
chloride(Cl-)
bicarbonate ion(HCO3-)
ionized calcium (iCa2-)
most plentiful electrolyte in blood
sodium
plays major role in maintaining osmotic pressure, acid-base balance, and transmitting nerve impulses
hyponatremia
hypernatremia
reduced and elevated levels of sodium
electrolyte primarily concentrated within cells
potassium
very little found in bones and blood
released into blood when cells are damaged
(major role in nerve conduction, muscle function,acid-base balance,osmotic pressure)
influences cardiac output by helping to control rate and force of contractions
hypokalemia
hyperkalemia
decreased and increased blood potassium
electrolytes that exists mainly in extracelluar spaces
chloride
(sodium chloride or hydrochloric acid)
responsible for maintaining celluar integrity
influences osmotic pressure, acid-base balance, water balance
what must be supplied together to correct hypokalemia
potassium and chloride
electrolyte that plays role in transporting carbon dixoide to lungs and regulation of blood pH
biocarbonate ion
removal of CO2 by lungs results in decrease of H+ ions and increase of pH
hypoventilation results in higher CO2 levels and production of more H+ ions can lead to acidosis
electrolyte that accounts for approx. 45% of calcium in blood
Ionized calcium
( rest bound to protiens and other substances)
used for muscular contraction, cardiac function, transmission of nerve impulses and blood clotting
Cardiac troponin T (TnT) and troponin I (TnI) are?
protiens specific to heart muscle,.
rise within hours of myocardial damage
ALT-analine transferase
liver enzyme
monitored on lipid lowering meds
done during lipid testing
BNP
B-type natriuretic peptide-(1st objective measurment for CHF-congestive heart failure)cardiac hormone produced by heart in response to ventricular volume expansion and pressure overload
BNP levels help differentiate between?
COPD and CHF
most common POCT test
glucose
glucose testing used to monitor?
diabetes mellitus
glycosylated Hemoglobin is a diagnostic tool for?
monitoring diabetes therapy
reflect the average blood glucose for preceding 4-6 weeks
A1c is type Hgb tested
Hct
measure of?
Hematocrit
aka..PCV-packed cell volume
measure of volume of RBCs in blood
Hgb levels are used to monitor PTs with
anemia
Guaiac
ued to detect
Occult blood
hidden blood in feces
disease in digestive tract (gastric ulcer and colon cancer)
test for peroxidase activity of Hbg molecule (diet free of meat and veggies sources ..will lead to false-positive results)
HCG
human chorionic gonadotropin
hormone produced by placenta (appers in both urine and serum -approx 10 days after conception)
preganancy test
skin tests?
TB (PPD)tuberculosis (purified protien derivative)
Aspergillus test (test for hypersensitivity to aspergillus-type of mold)
Cocci test - tests for infectious fungus disease caused by coccidioides immitis
histo test -test for past or present infection by the fungus histoplasma capsulatum
TB test
determines if developed an immune response to Mycobacterium tuberculosis
Strep test
throat swab for detection of group A streptococci
UA
regents test(paper strip impregnated with reagents that test for presence of bacteria, blood, bilirubin, leukocytes, protein, urobilinogen, pH, specific gravity)
urinalysis consist of a physical and chemical analysis of specimen as well as microscopic analysis if indicated
blood cultures ordered when Patient has?
FUO
Septicemia
bacteremia
when drawing a blue top tube
clear/discard tube not required for?
required for?
why clear?
not necessary for PT or PTT
necessary all other coagulation tests
to clear needle of thromblastin contamination picked up as penetration of skin
toxicology
scientific study of toxins(poisons)
tosicology tests examine?
blood
hair
urine
other body substances
drug screening
random screening (without prior notice)
bed side testing is also called
POCT-point of care testing
BT test evaluates?
platelet plug formation in capillaries
coagulation monitoring includes tests for?
Protime(PT) and INR
activated partial thromboplastin time (APTT or PTT)
activated clotting time (ACT)
Heparin management test (HMT)
coumadin is monitored by?
PT testing
arterial blood pH test is a measure of ?
indicates what?
the body's acid balance
PTs metabolic and respiratory status
range 7.35-7.45
below normal pH is refered to as
acidosis
above normal pH is refered to as
alkalosis
PCO2 is a measure of?
indicator of?
pressure exerted by dissolved co2 in plasma
indicator of how well air exchanged between blood & lungs
PO2 is a measure of?
indicator of?
pressure exerted by dissolved O2 in plasma
indicator of ability of lungs to diffuse O2-alveloi into blood
bicarbonate ion plays a role in?
transporting CO2 to lungs and regulating pH
measurement of what protiens is a valuable tool in diagnosing (AMI) acute myocardial Infarction?
Cardiac troponin T (TnT)
troponin (TnI)
what is the first objective measure of CHF(congestive heart failure?
BNP
B-type natriuretic peptide
detection of occult blood in stool is done by what test?
Guaiac