Protective clothing blocking performance once you determine the dangers of exposure and risk, can according to the current to the protective clothing material how to protect the scientific understanding of the blood and body fluids, microbes to select the protective clothing.
Microbes in protective clothing material depends on several factors: physical and chemical properties of fabrics, including factors such as thickness, aperture and water repellency shape, size and other characteristics of microorganisms, including morphology, motility and characteristics of extreme environmental factors such as carrier, including factors such as surface tension, volume and viscosity of external factors, including physical, chemical and thermal stress have been found in the medical environment factors such as different types of microbes, including bacteria, viruses and fungi.
Microbial the shape and size of each are not identical, this will affect their ability through the fabric structure.
Generally speaking, the fungus is larger than bacteria, the bacteria is bigger than the virus.
For example, HIV is spherical, a diameter of 100 -
The ebola virus is a single-stranded RNA virus, filiform, average particle size is 80 nm, average grain length is 974 nm
Microbial skin cells with bodily fluids, fall off, lint, dust and respiratory droplets such as carrier for transportation.
In very tiny amounts of blood or body fluids can carry a large number of microorganisms, the naked eye could see,
See figure 1)
For example, 0.
An edged (
Droplet number of hepatitis b infection unit is 10000, which is why it has a strong infectivity and metastatic.
In the acute stage of the disease, the level of the ebola virus RNA in the blood is also increasing rapidly.
A study reported each 0.
1 edged up 3.
4 x 105 RNA copy number average peak drops degree (
That is, more than 34 times the concentration of hepatitis b)
Several studies [
Shadduck et al.
Also reported that when liquid containing microorganisms to infiltrate materials, microbial so will carry, and in the liquid can penetrate invisible situation.
Standardized test methods must be accurate enough, therefore, to detect microbial penetration, because this is the only way to determine whether microbial permeability in any part of the garment, including joint.
Graph: according to the whole blood concentrations of infected patients.
Blood-borne pathogens delete line (
The transition diagram (
This figure will delete line number is converted to potential blood-borne pathogens pollution)
At the top of the four points by measurement of synthetic blood droplets in advance to edge up,
Tag, range is 100 (including L to 0.
The AAMI loathsome TIR 05 'medical facilities in the choice of protective clothing and surgical drapes and use' license.