Irritant contact dermatitis is a nonspecific response of the skin to direct chemical damage that releases mediators of inflammation predominantly from epidermal cells while allergic contact dermatitis is a delayed (type 4) hypersensitivity reaction to exogenous contact antigens.
What type of response is Irritant dermatitis Chapter 19?
Irritant dermatitis is a nonimmune-related response caused by the direct action of an agent on the skin. Allergic contact dermatitis represents a delayed (type IV) hypersensitivity reaction, whereby minute quantities of material elicit overt reactions.
What type of infection transmission occurs through mucosal tissues?
Direct contact transmission occurs through direct body contact with the tissues or fluids of an infected individual. Physical transfer and entry of microorganisms occurs through mucous membranes (e.g., eyes, mouth), open wounds, or abraded skin.
What type of gloves should be worn to open drawers during a dental procedure?
Guidelines for the Use of Gloves
Latex, vinyl, or other disposable medical-quality gloves may be used for patient examinations and dental procedures.
Which of the following is the most common type of latex allergy?
Irritant contact dermatitis is the most common type of latex allergy, resulting in dry, itchy, irritated areas of skin.
Is waste that is capable of transmitting an infectious disease?
The waste products from sharps (e.g. needles, vials, surgical equipment) and cultures concentrated with microorganisms have the highest potential for disease transmission; however, disease transmission has also resulted from exposure to blood, bodily fluids, tissue from infected patients or laboratory animals, and …
What is droplet transmission?
Droplet transmission occurs when bacteria or viruses travel on relatively large respiratory droplets that people sneeze, cough, or exhale. They travel only short distances (usually less than 2 meters) before settling.
What is an example of an illness that is transmitted by airborne transmission?
Many respiratory diseases and viruses spread by the airborne route such as: tuberculosis, measles and chickenpox.
Which of the following pathogens requires droplet precautions?
Infectious agents for which Droplet Precautions are indicated are found in Appendix A and include B. pertussis, influenza virus, adenovirus, rhinovirus, N. meningitides, and group A streptococcus (for the first 24 hours of antimicrobial therapy).
When Should utility gloves be in dentistry?
That being said, one way to protect yourself and prevent sharps injuries in the Dental Practice is to wear utility gloves whenever handling contaminated instruments or when you are performing housekeeping tasks that involve contact with blood or other potentially infectious materials!
Why are surfaces in dental treatment room disinfected or protected with barriers?
Why must surfaces in dental treatment rooms be disinfected or protected with barriers? surfaces can act as reservoirs for microorganisms. … reduces the number of microbes and removes blood, saliva and other body fluids. If a surface is not clean, it cannot be disinfected.
When should sterile gloves be worn?
Sterile gloves should be worn when workers are treating an open wound or during an invasive procedure.
What are the 4 main routes for infection to enter the body?
Pathogens can enter the body by coming into contact with broken skin, being breathed in or eaten, coming into contact with the eyes, nose and mouth or, for example when needles or catheters are inserted.
What are the 4 modes of transmission for infectious diseases?
The modes (means) of transmission are: Contact (direct and/or indirect), Droplet, Airborne, Vector and Common Vehicle. The portal of entry is the means by which the infectious microorganisms gains access into the new host.
What is vertical contact transmission?
Vertical transmission: Passage of a disease-causing agent (pathogen) from mother to baby during the period immediately before and after birth. Transmission might occur across the placenta, in the breast milk, or through direct contact during or after birth.