No. 10 To facilitate
maintenance of regulatory mechanism and protection by: Jake Pamintuan
Normally, our body has a homeostatic
process to maintain its balance. Disruption to this balance results to disease
process. In situations that our internal body mechanisms fail to maintain this
equilibrium, our function as nurses come into picture. In my experience as an
ICU nurse, in severe cases that resulted from disease complications, external
measures to facilitate maintenance or restoration of regulatory mechanism is
very vital.
Case in point, when a patient is in
shock, severely hypotensive, BP is palpatory, internal mechanism to maintain BP
in not effective anymore, we can now start external measures to re-establish
perfusion balance by starting inotropic agents or vasoconstrictive agent.
To maintain this stability that is
essential in our physiologic processes, negative feedback mechanism and
positive feedback mechanism work.
There are three interdependent
components in these homeostatic processes: Receptor is the sensing component
that monitors and responds to changes in the environment. When the receptor
senses a stimulus, it sends information to a control center (brain) that sets
the range at which a variable is maintained. The control center determines an
appropriate response to the stimulus. The control center then sends signals to
an effector, which can be muscles, organs or other structures. After receiving
the signal, a change occurs to correct the deviation by either enhancing it
with positive feedback or depressing it with negative feedback.
http://en.wikipedia.org/wiki/Homeostasis
In
conclusion, homeostasis is not merely physiologic in nature but applied and
used in all aspects of life e.g. (psychological, environmental, biological,
etc.)
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