TOPIC 1 - P1 Flashcards
Advocacy and promotion of voluntary blood donation and healthy lifestyle.
Provision of whole blood and packed red cells
Storage, issuance, transport and distribution of whole blood and packed red blood cells.
Compatibility testing of red cell units, if hospital-based.
BLOOD STATION (BS)
Advocacy and promotion of voluntary blood donation and healthy lifestyle.
Recruitment, retention and care of VNRBD; Screening and selection of VNRBD.
Conduct of health education and counseling services.
Collection of blood (mobile or faciity-based) from qualified VNRBD.
Transport of blood to Blood Center (BC) for testing and processing.
BLOOD COLLECTION UNIT (BCU)
Advocacy and promotion of voluntary blood donation and healthy lifestyle.
Storage and issuance of whole blood and blood components obtained from a BC.
BLOOD BANK (BB)
IN BLOOD BANK (BB), THE FF. SHALL ALSO BE PROVIDED..
i . Compatibility testing of red cell units
ii . Direct Coombs test
iii . Red cell antibody screening
iv. Investigation of transfusion reactions
Advocacy and promotion of voluntary blood donation and healthy lifestyle.
Recruitment , retention and care of VNRBD.
Collection of blood (mobile or faciity-based) from qualified VNRBD.
Conduct health education & counseling.
Testing of units of blood for Transfusio Transmitted Infections (TTIs).
Processing and provision of WB and blood components.
Storage, issuance, transport and distribution of units of whole blood (WB) and/or blood component to the hospitals & other health facilities.
BLOOD CENTER (BC)
______: blood was taken from three young men and given to _________; unfortunately, all four died.
1942 ; Pope Innocent VII
WHAT YEAR WAS THE FIRST TIME A BLOOD TRANSFUSION WAS RECORDED IN HISTORY
1942
WHO AND WHAT YEAR WAS sodium phosphate USED as anticoagulant.
1869: Braxton Hicks
WHAT YEAR AND WHO discovered the ABO blood groups.
1901: Karl Landsteiner:
WHO carried out vein-to-vein transfusion of blood by using multiple syringes and a special cannula for puncturing the vein through the skin.
Edward E. Lindemann:
WHO designed syringe-valve apparatus that transfusions from donor to patient.
Unger
WHAT YEAR AND WHO used sodium citrate as an anticoagulant solution for transfusions.
1914: Hustin:
WHAT YEAR AND WHO determined the minimum amount of citrate needed for anticoagulation and demonstrated its nontoxicity in small amounts.
1915: Lewisohn:
WHAT YEAR AND WHO introduced a citrate-dextrose solution for the preservation of blood.
1916: Rous and Turner
WHO IS UNDER THE establishment of a system of blood banks.
Dr. Charles Drew:
WHAT YEAR AND WHO IS appointed director of the first American Red Cross blood bank at Presbyterian Hospital.
1941, DR. CHARLES DREW
WHAT YEAR AND WHO: formula for the preservative acid-citrate-dextrose (ACD).
1943: Loutit and Mollison
WHAT YEAR AND WHO introduced an improved preservative solution called citrate phosphate-dextrose (CPD)
1957: Gibson
less acidic; eventually replaced ACD as the standard preservative used for blood storage.
CPD
Frequent transfusions and the massive use of blood soon resulted in new problems, such as circulatory overload.. these problems was solved by _______
Component Therapy
Traditionally, the amount of whole blood in a unit has been _____ mL +/–10% of blood (1 pint).
450
(current status), More recently, ____ mL +/–10% of blood are being collected.
500
(current status), Volume of anticoagulant-preservative solution being increased from ____ mL to ___ mL.
63 ; 70
(current status), in 110-pound donor, a maximum volume of ____ can be collected, including samples drawn for processing.
525 mL
(current status) Donors can replenish the fluid lost from the 1-pint donation in ____.
24 hours
(current status), Donor’s red cells are replaced within _____ after donation.
1 to 2 months
(current status), volunteer donor can donate whole blood every ____
8 weeks
then; 450 mL of blood per _____ mL anticoagulant
now; ____ mL blood per 70 mL anticoagulant
63 mL
500 mL
DATE TEST REQUIRED FOR THE FF. TESTS
Syphilis
HBsAg
anti-HBc
anti-HCV
anti-HIV-1/2
1950s
1971
1986
1990
1992
DATE TEST REQUIRED FOR THE FF. TESTS
anti-HTLV-I/II
HIV-1 (NAT)
HCV (NAT)
WEST NILE VIRUS (NAT)
anti-T.cruzi
1997
1999
1999
2004
2007
crucial for normal erythrocyte survival and function
1.Normal chemical composition and structure of the RBC membrane
2.Hemoglobin structure and function
3.RBC metabolism
(RBC Bio and Preserv) Defects in any or all of these areas will result in RBCs surviving less than the ______ in circulation.
normal 120 days
RBC Membrane is ______
Semipermeable lipid bilayer
main lipid components of the membrane
Phospholipids
Proteins that extend from the outer surface and span the entire membrane to the inner cytoplasmic side of the RBC
Integral membrane proteins
protein Beneath the lipid bilayer
Peripheral proteins
Two important RBC characteristics: ______ and _____
deformability and permeability
Loss of adenosine triphosphate (ATP) (energy) levels leads to a decrease in the phosphorylation of ______ and, in turn, a loss of membrane ________.
spectrin ; deformability
Accumulation or increase in deposition of membrane calcium also results, causing an increase in ________ and ________.
membrane rigidity ; loss of pliability
Exemplified by the formation of “_______” (cells with a reduced surface-to-volume ratio) and “_______,” in which the removal of a portion of membrane has left a permanent indentation in the remaining cell membrane.
spherocytes ; bite cells
(RBC Permeability) Freely permeable to _____ and _________ and ______ & impermeable to cations such as _____ and ______
water and anions chloride (Cl–) and bicarbonate (HCO3–)
; sodium (Na+) and potassium (K+).
Erythrocyte intracellular-to-extracellular ratios for Na+ and K+ are ____ and ______, respectively.
1:12 and 25:1
control these pumps and to prevent excessive intracellular Ca2+ buildup.
Calmodulin
PW that produce ATP are mainly _____
anaerobic
3 PW that serve to maintain the structure and function of hemoglobin
Pentose phosphate pathway
Methemoglobin reductase pathway
Luebering-Rapoport shunt
________ has a significant effect on the affinity of Hb for oxygen and therefore affects how well RBCs function post-transfusion.
amount of 2,3-DPG found within RBCs
PW that permits the accumulation of an important RBC organic phosphate, 2,3-diphosphoglycerate (2,3-DPG).
Luebering-Rapoport shunt
Conformation of the deoxyHb molecule is known as the ______: due to ______ by Hb, binding of 2,3-DPG.
tense (T) form ; unloading of oxygen
_____ form of the hemoglobin molecule: Hb loads oxygen (oxyHb), expelling 2,3-DPG.
Relaxed (R)
Relaxed (R) form has ______ affinity for oxygen
higher
______ allosteric changes that occur as the hemoglobin loads and unloads oxygen.
Respiratory movement
Normal position of the oxygen dissociation curve depends on ______
3 different ligands
Shift to the right: ____
hypoxia
Shift to the left: multiple transfusions of _________
2,3-DPG–depleted stored blood.
Goal: to provide viable and functional blood components for patients requiring blood transfusion.
RBC PRESERVATION
2 criteria are used to evaluate new _______ and _____
preservation solutions ; storage containers
_____ is a measure of in vivo RBC survival following transfusion.
RBC viability
FDA requires an average _____ post-transfusion RBC survival of more than ___.
24-hour ; 75%
FDA Mandates that red cell integrity be maintained throughout the shelf-life of the stored RBCs.
assessed as free Hb less than ______.
1% of total Hb
blood is stored: _____
1°C - 6°C
220 to 250 mg of iron = _________
one RBC unit
_____, was incorporated in an attempt to stimulate glycolysis so that ATP levels were better maintained
CPD
CPD solution + Adenine = ________
(CPDA-1)
increases ADP levels, thereby driving glycolysis toward the synthesis of ATP
(CPDA-1)
(CPDA-1) ___ mM of adenine plus ____ more glucose than CPD
_____ days
0.25 ; 25% ; 35 days
NAME AND DAYS FOR:
ACD-A
CPD
CP2D
CPDA-1
Acid Citrate Dextrose (formula A) = 21 days
Citrate Phosphate Dextrose = 21 days
Citrate Phosphate Double-Dextrose = 21 days
Citrate-phosphate-dextrose-adenine = 35 days
in RBC preservation, factors may limit the ______ of transfused RBCs.
viability
in RBC preservation, ________ used for the storage container
plastic material
in RBC preservation, must be sufficiently permeable to ____ in order to maintain higher pH levels during storage.
CO2
in RBC preservation, Majority used: _______ plastic bags
polyvinyl chloride (PVC)
CHEMICALS IN ANTICOAGULANT SOLUTIONS
function: chelates calcium, prevents clotting
citrate (sodium citrate or citric acid)
CHEMICALS IN ANTICOAGULANT SOLUTIONS
citrate (sodium citrate or citric acid) is present in
ACD-A
CPD
CP2D
CPDA-1
CHEMICALS IN ANTICOAGULANT SOLUTIONS
function: maintains pH during storage; necessary for maintenance of adequate levels of 2,3-DPG
Monobasic sodium phosphate
CHEMICALS IN ANTICOAGULANT SOLUTIONS
Monobasic sodium phosphate is present in
ACD-A
CPD
CP2D
CPDA-1
CHEMICALS IN ANTICOAGULANT SOLUTIONS
function: substrate for ATP production (cellular energy)
dextrose
CHEMICALS IN ANTICOAGULANT SOLUTIONS
dextrose is present in
ACD-A
CPD
CP2D
CPDA-1
CHEMICALS IN ANTICOAGULANT SOLUTIONS
function: production of ATP (extends shelf-life from 21 to 35 days)
Adenine
CHEMICALS IN ANTICOAGULANT SOLUTIONS
Adenine is present in
CPDA-1