Lec 1: Introduction Flashcards
(29 cards)
In 1957, he described “worms” in the blood.
Athanasius Kircher
In 1674, he gave an account of RBC
Anton van Leeuwenhoek
In 1800, he described the platelets as “petite plaques”
Giulio Bizzozero
In 1902, he developed the wright stain
James Homer Wright
- a crucial staining technique still used today for the detailed examination of blood smears under a microscope
- this milestone laid the grand work for the modern understanding and study of hematology
Wright stain
Functions of the hematology laboratory (5)
- Establish or rule out diagnosis
- confirm a physician’s clinical impression of a possible hematological disorder
- detect an unsuspected disorder - monitor the effects of therapy
- detects minimal residual disease following the therapy
Purpose of blood
- Transports oxygen
- clears tissue of carbon dioxide
- transport to glucose proteins and fats
- moves wastes
- a yellowish fluid that contains water electrolytes hormones and waste products
- contains fibrinogen and clotting factors 2, 5, and 8
Plasma
It has essentially the same composition as plasma except that the fibrinogen and clotting factors II, V, VII have been removed
Serum
- In anticoagulated blood, it separates into different layers based on the ____ of its components.
- What does the buffy coat contain?
- Density
- WBC & platelets
This cell fragment is critical for initiating repair processing for vessel injury and forming blood clots
Platelets
- commonly from radial/femoral artery
- rich in oxygen
- used for measuring blood gasses
Arterial blood
[ TRUE or FALSE ]
Capillary blood has higher platelet count compared to venous blood
FALSE
Venous blood has higher platelet count.
The most commonly used additive in hematology
- EDTA
- sodium citrate
- heparin
It is caused by inappropriate used or maintenance of electrical instruments or equipment
Electrical hazard
It mandates that all electrical equipment must be properly grounded using a three pronged plug to prevent electrical shock hazards
Occupational Safety And Health Administration (OSHA)
It’s strongly opposes the use of extension cords in the laboratory setting
National Committee For Clinical Laboratory Standards (NCCLS)
Why does the NCCLS oppose the use of extension cords in the laboratory setting?
Because they can be a tripping hazard and may cause overload that leads to electrical fire.
This results from improper use, storage, or disposal of glassware, sharp instruments, compressed gases or equipment
Mechanical hazard
It recommends that needles be left uncapped after venipuncture and simply discarded to minimize the risk of needle stick injuries
National Committee For Clinical Laboratory Standards (NCCLS)
This results from the improper use or storage of cytogenetic substances or substances capable of combustion
Fire hazard
The 2 types of white blood cells
- Granular WBC
- Agranular WBC
It measures the number of RBC in a volume of blood to assess the blood oxygen carrying capacity
Red blood cell count
It measures the number of red blood cells in a volume of blood
RBC count
