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The need for anesthesia still evokes
a strong fear response from most pet owners despite considerable
advances in the safety of the anesthetic agents commonly used today.
A pre-anesthetic evaluation, including an examination of the patient
and blood tests of the kidneys and liver, is performed on every
pet to determine if it is safe to give anesthesia. Advanced monitoring
equipment is used to track the oxygen concentration in the blood
stream, the heart rate and rhythm, the body temperature and even
the blood pressure after your pet has been anesthetized. In many
cases, once the procedure has been completed, your pet can go home
within several hours. The doctors and staff form a team that is
both experienced and compassionate. Safety always comes first followed
by comfort. We all know you worry and thats why I will try
and explain the anesthetic procedure.
Assuming your pet needs anesthesia
and that the physical exam and blood values are all within the normal
limits, the next step is to determine what if any medication needs
to be given before the anesthetic is administered. In many cases
a sedative and/or possibly pain medication will be given to reduce
the total amount of anesthetic that is necessary for the procedure.
The philosophy is that by using smaller doses of many compatible
drugs the safety margin for anesthesia is significantly increased.
Another objective is to provide an enriched oxygen supply while
under anesthesia by using an endotracheal tube. Initially, an intravenous
anesthetic that minimally suppresses the cardiovascular system (e.g.
dissociative anesthetics) is used to induce a state of unconsciousness.
This immobilizes your pet so that he/she can then be maintained
on a gas anesthetic.
All anesthetics are given to effect.
The goal is to give just enough anesthetic to result in a light
plane of unconsciousness. There are always variables to consider
when calculating how much anesthesia to administer, such as the
physiological stress from a disease, individual sensitivities, blood
values that indicate a relative state of dehydration, etc. This
is where preparation, experience, and teamwork become valuable tools
to the art of anesthetic science. While I will never be able to
guarantee an uneventful anesthetic experience the balance of risk
for anesthesia is becoming considerably less than the consequences
of the disease. Age is not a disease. If your pet has healthy kidneys
and liver age is not an anesthetic issue.
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