Anatomically, the hand is the region of the body that extends from
the wrist and includes the palms and the fingers. While some persons have risen
to show that the hands are indeed dispensable yet the multi utility of the hand
may never be over emphasized.
Micro organisms which are living things that we can’t see with the
naked eye are ubiquitous that is to say they are everywhere, and that includes
our very own bodies! Don’t panic! Some of these micro organisms are beneficial
to us and some do not cause diseases. These microbes which do not cause
diseases are said to be non-pathogenic. Most of them form the normal micro
flora of the body. The micro flora is simply a term used to refer to those
micro organisms that you find normally living in the body. Some of the micro
flora are resident and are referred to as resident micro
flora. Some others are said to be transient. They are present
for a short period as they are only acquired from the environment. It is
important to also state that some of these normal floras have the potential of
actually becoming pathogenic when they are displaced from their original sites
to some other sites in the body.
The resident micro flora present on the skin helps to prevent
colonization by invading bacteria which could be pathogenic.
This article would be restricted to a group of micro organisms
called BACTERIA. Heard about them before? Well the term is
used to describe a wide range of organisms that vary not just in size, but also
in morphology.
Bacteria that are able to cause diseases are said to be
pathogenic. These pathogenic organisms have the capacity to form spores which
enables them to survive for longer durations outside the human body.
Every day we work and we touch surfaces and that exposes us to
millions of pathogenic bacteria which could really be harmful. The rails of the
stair case, the tables in our offices, and oh! Even handshakes too!
The risk we are exposed to is reduced when the skin of our hands
are intact, that is to say without cuts or other forms of injuries which
exposes a more delicate part of our bodies which is vascularised, meaning that
there is blood flowing through them. The danger of this is that such microbes
we come in contact with can be transported to areas of our body where they can
proliferate and eventually cause diseases. That’s why it is important that cuts
especially on the hands be sealed with plaster or a sterile bandage.
Some common organisms which are most likely to cause infections
following unwashed hands include the following:
Staphylococci: This is a broad family which includes S
aureus, which causes a variety of infections owing to its high
virulence. S epidermidis, S saprophyticus and S
lugdunensis.
Pseudomonas aeruginosa a major
cause of nosocominal infections or simply stated hospital acquired infections.
When it comes to aseptic techniques, which entails protocols, to
prevent the introduction of micro organisms, hand washing ranks as one of the
tops. Soaps especially Antiseptic soaps play vital roles.
The term antiseptic is used to refer to products which can kill or
limit the rate of growth of micro organisms on living tissue such as the skin.
Most antiseptics are bacteriostatic which means that they inhibit bacteria
growth however a few products claim to be bactericidal that is, they kill
bacteria. These antiseptics may act in one or more of the following ways:
coagulating the proteins of the bacteria, damage due oxidation, disruption of
the cell membrane and disruption of the enzymes of the organisms.
So stay safe. Always wash your hands using soaps preferably
antiseptic soaps. You’d be protecting yourself and people you care about too.
Author:
Mgbakogu, Robinson
Medical Lab. Scientist.
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