Antiseptic and Disinfectants
•
Disinfection
Ø This aims to reduce the number of microorganisms present to a level
that is unlikely to cause infection. For practical purposes, disinfection may
destroy or inactivate many or all pathogenic microorganisms, but not spores.
Ø It is important to realise that successful disinfection is very much
dependent on the number of microorganisms initially present. Therefore,
physical cleaning is an important prerequisite to effective disinfection.
•
Antisepsis
Ø This term is applied to a process of disinfection on tissue. Only
disinfecting agents that are not toxic to the tissue may be used as antiseptic
agents.
•
Antiseptic and Disinfectants
Ø Antiseptic: A
substance that counters sepsis by destroying or inhibiting the growth of
pathogenic microorganisms.
Ø Antiseptics are generally applied to living tissues in the form of wet
dressings, creams, ointments or other substances that involve prolonged contact
with the body.
Ø Disinfectant:
An agent that prevents infection by destroying or removing pathogenic microorganisms.
Ø The term is confined to substances used for the treatment of inanimate
objects.
Ø In practice, both antiseptics and disinfectants are used to destroy or
inhibit the growth of pathogenic microorganisms in the vegetative form.






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