Hello ladies and gentlemen.
This lecture in our ongoing
series of lectures on Anesthesiology, is going
to focus on Anesthesia Systems, the very
important topic of Airway Management,
and then briefly, on Monitoring and Anesthesia.
So, we're going to talk a little bit about the Anesthetic Machine.
We're going to talk about the Partial Rebreathing
System, which is the standard by which most of us
function nowadays. We're going to talk about the Difficult
Airway, which I've had many sleepless nights worrying
about this, and I know nearly all my colleagues
have as well. And we're going to talk about
Standards of Monitoring for the Anesthesia Patient.
So we've gone from a very simple
process of dropping ether
on to what was called a Schimmelbusch Mask
and allowing it to vaporize as the patient
breathed through the mask, to very sophisticated
systems that are microprocessor based
and are highly developed to primarily deliver
safe amounts of anesthetic in an effective
fashion. So this is the modern
anesthetic machine. As you can see, it's a very complicated
piece of equipment. Some people compare
anesthesia to piloting a plane.
This is our cockpit.
In the anesthesia machine there are many valves,
there's many pipes. There's a high pressure
gas system, there's a low pressure gas system.
There are vaporizers. There are monitors,
as you can see on the device, and on the right hand,
on the pole that comes off the right hand side
of the device, you can see infusion pumps.
Down on the lower part of the device, where you can see
pipes and the greenish colored bag,
that's the circle system,
and that's really what's responsible for our
way of delivering anesthetics. There's
many safety features built into an anesthetic
machine, not the least of which
is that, it must be serviced at least
annually. And the vapours are separately
calibrated annually. The monitors have become
part of the machine now. They used to be
on separate poles, separate from the machine,
and now they're really built into the machine.
And when we buy an anesthetic machine, we nearly
always buy new monitors at the same time.