In the middle of the nineteenth century, the first available vaporizers were merely devices that allow patients to breathe evaporated liquids.
Caps and Fittings: Fit and Orientation Issues
The speaker points to caps and notes they are upside down.
The caps are not designed to fit or be keyed/locked onto the system; they don’t fit at all.
There is confusion about whether the caps are compatible with the vaporizers being shown.
Placement of Vaporizers on the Anesthesia Machine
The vaporizers are described as being on top of the anesthesia machine, i.e., sitting on the machine.
There’s mention that vaporizers could be inside the anesthesia machine, but the main point in the dialogue is that they sit on top of the machine.
The speaker emphasizes the vaporizers belong on/with the machine rather than as a separate, standalone component.
Visuals and Identification of the Equipment
The speaker identifies the vaporizers by saying, “these are the vaporizers.”
There is a brief reference to a model or example: “that’s Mhmm. But it this is on a machine like that.”
A slide or figure reference appears: “58.” indicating a page or slide in the material being shown.
A note: the speaker mentions being in a different book, which explains some cross-reference confusion during the discussion.
Circuits and Gas Flow: Inspiratory vs Expiratory
The instructor says they will show how the circuits connect.
The system is not just a simple circle at first; the junctions are explained via a manifold example from a master’s machine.
One connection comes from the manifold to the expiratory limb; the other connection goes to the inspiratory limb.
The speaker emphasizes that the overall arrangement forms a circle, with the mask attached to the circle to deliver gas to the patient.
Clear distinction is made: the expiratory side is connected to the part after exhalation, while the inspiratory side delivers gas to the patient.
The Circle System and the Manifold
The setup includes a circle (circle system) with a dedicated inspiratory limb and a dedicated expiratory limb feeding into the mask.
The discussion highlights how the circle configuration enables rebreathing or controlled gas delivery via the mask.
Maintenance, Disposal, and Cleaning
A future part of the lesson covers how to dispose of these items and wipe down the machine.
The speaker notes that this is a practical process and hints that there was a time when such cleaning/disposal practices did not exist or were not performed.
Disassembly and Component Placement Cues
There is a moment where a component comes off and the question is raised: “And when do they use that again? Where does this go?”
The answer points to following an arrow in the diagram to place the component correctly, illustrating how orientation cues guide assembly.
Uses and Applications
The equipment can be used for eye surgery as part of a MAC (Monitored Anesthesia Care) case.
It can also be used to transport, indicating versatility in patient handling or equipment movement.
Practical Context and Observations
The dialogue shows a learning environment with real-time questions about fit, placement, and function.
There is an emphasis on the practical setup (top of machine vs inside the machine), circuit connections (inspiratory/expiratory), and maintenance (disposal and wipe-down), all critical for safe use.
The speaker references training materials (video and book) and signals the learning process through questions and corrections.