Basic Practices Flashcards
A bright to dark fluid of variable composition curculating throughout the transport vessels of the body
blood
color of deoxygenated blood
dark red
color of oxygenated blood
bright red
causes the red coloring of blood and responsible for carrying oxygen
hemoglobin
blood volume
5-6L / 7-8% of body weight
composition of blood
55% liquid portion water
95% H20 5% solutes
45% formed elements
composition of 5% solutes
proteins, carbs, hormones, vitamins, enzymes, electrolytes, etc
RBC is also called
erythrocytes
WBC is also called
leukocytes
Platelets are also called
thrombocytes
Layers of blood when centrifuge
plasma
buffy coat
red blood cell
Liquid portion of uncoagulated blood
plasma
Liquid portion of coagulated blood
serum
color of serum and plasma
clear and pale yellow to slightly hazy
protein responsible for clotting
factor 1 or fibrinogen
mesh like compund found in serum responsible for clotting
fibrin
Function of blood
transport, communication, immunity, coagulation, temperature regulation, hydraulic functions
Blood tests
CBC, Chemistry, Blood gas
General Methods for Blood collection
venipuncture, arterial puncture, capillary puncture
collection of blood from arteries
arterial puncture
arterial blood collection us used on what kind of test
blood gas analysis and blood ph determination
sites for arterial bkood collection
radialartery, brachialartery, femoralartery, scalpartery, umbilicaltery
hardest kind of bleeding to control
arterial bleeding
blood collected in venipuncture
venous blood
used to prived barrier against venous blood flow
tourniquet
dimensions of tourniquet
18-20 inches, 1 inch
parts of evacuated tube system
evacuated tube, needle, adapter
most common antiseptic
70% isopropyl alchohol
most common non alcoholic antiseptic
benzalkonium chloride solution, zephiran chloride
bethadine is used in cleaning the area for blood collection when collecting blood for what test
legal blood alcohol level or ethanol testing
antiseptics used in a two step procedure with 20-60 second scrub for collecting blood for blood culture
70% isopropyl alcohol
1% to 10% povidone-iodine pads, tincture of iodine, chlorhexdine compunds or another isopropyl alcohol prep
another antiseptic used in venipuncture
chlorhexidine gluconate / isopropyl alcohol or providone - 70% ethyl alcohol
most common site for venipuncture
superficial veins of the antecubital fossa
Two anatomical patterns of veins in the antecubital fossa
H and M pattern
H pattern is found in what vein
median cubital vein
median cubital vein connects what veins
basilic and cephalic veins
it is the best site for venipuncture because it is the largest and the best anchored vein
Median Cubital Vein with H pattern
cephalic vein is found where?
lateral aspect of the antecubital fossa
basilic vein is found where?
medial aspect of the antecubital fossa
what vein is found in the M pattern
median vein
which veins are least prioritized for venipuncture, which is the last choice?
cephalic and basilic veins, basilic should be the last choice
which artery is near the basicil vein that is why it should be the last choice for venipuncture
brachial artery
which nerve is in risk of injury when we choose to extract blood from the basilic and cephalic veins
median nerve
The destruction of red blood cells
hemolysis
what to avoid when blood collection
hemolysis and lipemia
general aspects that causes hemolysis
small needle, over and under filling of tubes, aggressive mixing
color of serum or plasma in hemolyzed blood
pink or red
average gauge size used for adults
19-22
which analytes are present in blood and is released which gives false decrease results when blood is hemolyzed
potassium, creatine, kinase, alanine aminotransferase
analytes affected by hemolysis based on color
hemoglobin, bilirubin, and protein
what reacts with analytes causing a false decrease, this may occur when testing which compunds
red cell constituents
carbon dioxide, thyroxin, and insulin
increase lipids in the blood
lipemia
color of serum or plasma in lipemia
opaque white
what happens to rbc when lipemia happens
becomes fragile
FBS
fasting blood sugar