Sorry to be late tonight. I was occupied earlier this afternoon than I had planned and got a late start. However, I wanted to produce a quality piece even though it did not post exactly at 9:00.
This the last part in our three piece series on anesthetics. We have covered general anesthetics of the inhalation type and of the IV type, and now will discuss local anesthetics. The primary difference betwixt general and local anesthesia is that in general anesthesia the patient is generally unconscious or at least highly sedated, whilst in local anesthesia the awareness of the patient is generally not impaired, although sometime they are sedated by other agents.
The term “local” is not as descriptive as one might think. While it is true that very small areas can be anesthetized, often much larger areas are. By the way, it is likely that local anesthesia is much more ancient than general anesthesia, for reasons to be explained later.