j Flashcards

(33 cards)

1
Q

1492

A

Blood was taken from three young men and given to the stricken Pope Innocent VII. It is the first time a blood transfusion was recorded in history

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2
Q

CLOTTING

A

1869 Recommended sodium phosphate Braxton Hicks (1st to discover)

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3
Q

1901

A

Discovered the ABO blood groups Karl Landsteiner

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4
Q

1913

A

First to succeed in designing a device for performing blood transfusion Edward E. Lindermann He carried out vein-to-vein transfusion of blood by using multiple syringes and a special cannula

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5
Q

1913

A

Designed his syringe-valve apparatus for transfusions Lester Unger

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6
Q

1914

A

Reported the use of sodium citrate as an anticoagulant solution for transfusions Albert Hustin

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7
Q

1915

A

Determined the minimum amount of citrate needed for anticoagulation and demonstrated its nontoxicity in small amounts Richard Lewisohn

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8
Q

1916

A

Introduced a citrate-dextrose solution for the preservation of blood Rous and Turner

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9
Q

1941

A

During WWIII, developed techniques in blood transfusion and preservation led to the establishment of a widespread system of blood banks Dr. Charles Drew In February, Dr. Drew was appointed director of the first American Red Cross blood bank at Presbyterian Hospital

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10
Q

1943

A

Loutit and Mollison of England Introduced the formula for the preservative acid-citrate-dextrose (ACD)

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11
Q

1957

A

Gibson Introduced an improved preservative solution called citrate-phosphate-dextrose (CPD) CPD Less acidic Replaced ACD as the standard preservative used for blood storage

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12
Q

WHOLE BLOOD AMOUNT IN UNIT

A

Traditional 450mL +/- 10% of blood (1 pint) Recently 500mL +/- 20% of blood

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13
Q

For a 110-pound donor

A

a maximum volume of 525mL can be collected, including samples drawn for processing

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14
Q

The total blood volume of most adults

A

10 to 12 pits

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15
Q

Donors can replenish the fluid lost from the 1-pint donation

A

in 24 hours

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16
Q

The donor’s red cells are replaced

A

within 1 to 2 months after donation

17
Q

A volunteer donor can donate whole blood

A

every 8 weeks

18
Q

Blood Components

A

Packed Red Blood Cells (PRBCs) Platelets Plasma In recent years, less whole blood has been used to prepare platelets with the increased utilization of apheresis platelets Hence, many units are converted only into RBCs and plasma

19
Q

Plasma

A

Can be converted by cryoprecipitation to a clotting factor concentrate

20
Q

Clotting Factor Concentrate

A

Rich in antihemophilic factor A unit of whole blood prepared RBCs may be stored for 21 to 42 days, depending on the anticoagulant preservative solution used

21
Q

RBC BIOLOGY AND PRESERVATION

A

Three areas of RBC biology are crucial for normal erythrocyte survival and function: Normal chemical composition and structure of the RBC membrane Hemoglobin structure and function RBC metabolism Defects in any or all of these areas will result in RBCs surviving less than the normal 120 days in circulation

22
Q

ADDITIVE SOLUTIONS

A

Preserving solutions that are added to the RBCs after removal of the plasma with or without platelets Removal of the plasma component during the preparation of RBC concentrates Removed much of the nutrients needed to maintain RBCs during storage

23
Q

Currently, three additive solutions are licensed in the United States

A

Adsol (AS-1; Baxter Healthcare) Nutricel (AS-3: Pall Corporation) Optisol (AS-5; Terumo Corporation)

24
Q

GENETICS

A

INHERITANCE Refers to how organisms pass on information in their genes to create new generations of the same species, or variations of the original Mendelian Genetics Classical genetics Refers to the basic law of inheritance Direct result of Mendel’s experiment

25
LAW OF DOMINANCE AND RECESSIVENESS
Preserving solutions that are added to the RBCs after removal of the plasma
26
DOMINANT ALLELE
Affects the resulting phenotype A protein which directs how physical attributes or processes are to be carried on
27
RECESSIVE ALLELE
Do not code for a particular protein when in combination with its dominant counterpart
28
LAW OF DOMINANCE AND RECESSIVENESS
Capital letters - Dominant Alleles Lower case of the same letter - Recessive Alleles Some alleles, which are variants of a particular gene found at the same chromosomal locus or location, are dominant over the other alleles for a given gene Those traits that are not dominant are termed recessive
29
MENDEL’S EXPERIMENT
Plant height The allele that codes for tall is dominant over the short
30
LAW OF SEGREGATION
During the formation of gamete, each gene separates from each other so that each gamete carries only one allele for each gene
31
LAW OF INDEPENDENT ASSORTMENT
The allele a gamete receives for one gene does not influence the allele received for another gene
32
SEX-LINKED INHERITANCE
A biological process which involves the transmission of traits or characters from parents to offspring
33
HAEMOPHILIA
An inherited (bleeding disorder) in X-linked recessive pattern If you have haemophilia, your blood doesn’t clot properly, which makes it difficult to control bleeding