How a failed demonstration once made surgeons doubt the possibility of painless surgery

The History of Local Anaesthesia - Dr William Harrop-Griffiths · 49:36 · Video: Gresham College · Watch at the source

In short: Before we could numb a single tooth, the medical world thought painless surgery was a fraud. A disastrous attempt with nitrous oxide in 1845 led prominent surgeons to dismiss the concept as 'humbug,' nearly stalling the revolution of anaesthesia before it truly began.

The journey toward modern anaesthesia was marked by both brilliant leaps and tragic failures. In 1845, dentist Horace Wells attempted to use nitrous oxide—commonly known as laughing gas—to facilitate surgery. This demonstration, performed before surgeon John Collins Warren, was an unmitigated disaster. The failure was so significant that it caused Wells's career to spiral downwards, ultimately ending in his suicide.

This early failure deeply influenced the medical community's skepticism. When William Morton successfully used ether to help surgeon John Collins Warren excise a neck tumour on 16th October 1846, Warren famously declared, "Gentlemen, this is no humbug!". This exclamation was a direct response to the previous skepticism sparked by Wells's failed attempt. While Morton is often credited with the first successful public demonstration, he had actually successfully removed a tooth from patient Eben Frost using ether on 30th September 1846, two weeks prior.

The terminology we use today also has a specific origin. The word "anaesthesia," derived from the Greek 'anaisthesia' (meaning without sensation), was suggested by Oliver Wendell Holmes, a Professor of Anatomy and Physiology at Dartmouth College. Writing to Morton on 21st November 1846, Holmes predicted that every civilised human race would eventually use the term.

While general anaesthesia, which renders a patient unconscious, became established around 1847, local anaesthesia—which targets specific numbness—did not follow until 1884. Both developments relied on substances like ether and cocaine, which had existed for centuries before scientists realized their potential for human benefit.

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