How anesthesia circle breathing systems work explained simply.
Patient circuits
Comparison of Two Isoflurane Delivery Systems for Maintaining Anesthesia in Horses: End-Tidal Closed-Loop Target-Controlled Versus Out-Of-Circuit Vaporizer - ScienceDirect
Figure 3 from A New Anesthetic Machine and Technic With Particular Application to Developing Areas | Semantic Scholar
Patient circuits
Principles of anaesthetic vaporizers - ScienceDirect