This paper traces the history and medical significance of anesthesia from ancient pain-management techniques to its modern clinical application. Beginning with the crude pre-anesthetic methods used by Greek, Roman, and Chinese practitioners, the paper documents key figures — including Crawford Long, Horace Wells, and William Morton — whose discoveries transformed surgery from a brutal ordeal into a safe, painless procedure. It also covers the pharmacological basis of anesthetic agents, the stages of anesthesia, pre-anesthetic medications, and the controversies surrounding its use. The paper concludes by reflecting on how anesthesia elevated the social standing of medical professionals and permanently changed humanity's relationship with surgical pain.
Anesthesia means the temporary loss of sensation, including pain. It is a Greek word that literally means "to negate sensation" (Silver, 1957). The primary significance of anesthesia lies in its ability to provide painless surgical procedures by producing analgesia, unconsciousness, and amnesia in patients; it also results in the suppression and relaxation of muscles. Combinations of drugs are required to achieve these effects quickly and effectively. Until the discovery of anesthesia, performing surgery and tooth extraction was an extremely painful ordeal.
The significance of anesthesia is therefore to relieve anxiety and stress in patients and to make them comfortable for surgery. Pain is an undesirable symptom that tells the body something is wrong. Over time, several efforts were made to eliminate this symptom. The Chinese were known to use acupuncture, while Greeks and Romans promoted the use of alcohol. Herbs were used in other parts of the world, and these efforts eventually led to the discovery of anesthesia.
Before the discovery of anesthesia, medical professionals were generally not held in high regard. Anesthesia played a significant role in giving medical practitioners their due place in society. Previously, techniques for pain management were crude and brutal. Oliver Wendell Holmes, an American physician and poet, was the first person to give the name "Anesthesia" to the phenomenon, in 1846. The respect and honor that physicians and surgeons receive today — the title of Healers — did not exist in ancient times. Anesthesia is preferred over other drugs partly due to its fat-soluble property, which allows drugs easy and quick passage through the cell membrane, producing effects rapidly and making surgery a quicker and safer procedure.
Attempting to administer pain-free surgery has been a dream as old as the ancient world itself. Pre-anesthetic pain management techniques were crude attempts to fulfill the dream of a painless surgical procedure. According to Celsus, a Roman physician in 100 AD, the pain of surgery was akin to torture: "Now a surgeon should be youthful or at any rate nearer youth than age; with a strong and steady hand which never trembles, and ready use the left hand as well as the right; with vision sharp and clear, spirit undaunted; filled with pity, so that he wishes to cure his patient, yet is not moved by his cries, to go too fast, or cut less than necessary; but he does everything just as if the cries of pain cause him no emotion."
The process of surgery and tooth extraction was considered brutal, and surgeons were regarded as heartless individuals who needed to be strong enough to handle patients in extreme pain. In older times, several strong men were required to hold the patient steady, and the surgeon had to appeal to the patient for cooperation before quickly conducting the procedure. Due to pain, the process became very difficult, and patients often aspirated vomit into their lungs, causing aspiration pneumonia. Even after inducing heavy doses of ether, the process remained very difficult and painful.
Ether is a small molecule first discovered in 1275 by a Spanish chemist who named it "sweet vitriol." Later, in 1730, the name was changed to "ether" by the German scientist W.G. Frobenius, and this name was retained until the early 1800s (Blatner, 2009). One elderly Boston physician could only compare the experience of surgery before anesthetics to the Spanish Inquisition. It was not until the 18th century that some major advances in medicine took place. Surgery was an extremely painful procedure and was often abandoned by patients, resulting in death from diseases that could otherwise have been cured surgically. Surgeons in older times used herbs and plant derivatives such as marijuana, belladonna, jimsonweed, and opium; some preferred alcohol, and others used a blow to the head to cause unconsciousness. These methods were not successful and did not produce the anesthetic effect required to carry out a surgical procedure.
Before anesthesia, surgery was performed only rarely. According to the annual report of Massachusetts General Hospital from 1821 to 1846, records show a total of 333 surgeries — roughly one surgery per month (Sullivan, 1996). Surgery was considered simply the last resort of treatment. The English scientist Joseph Priestley (1733–1804) discovered that nitric oxide might relieve pain. Some practitioners used carbon dioxide, while others injected cocaine into the mouth, eyes, and other parts of the body to block nerve impulses.
During the 19th century, most medical practices took place privately in homes, which increased the risk of infection and sepsis. Doctors at that time had limited knowledge of how disease spread, and hospitals — despite being large — were considered unhygienic, which harmed patients during their stays. Early forms of anesthesia, such as chloroform and ether, carried the danger of asphyxiation. There was also an increased risk of infection, as antiseptics were not widely adopted in the United States until the end of the century (19th Century Doctor within the U.S., 2009, Rose Melnick Medical Museum). As a result, patients and their families preferred to call doctors to their homes. In older times, a doctor was expected to treat everything from a toothache to a tumor, but with time, doctors began to focus on excelling in specific fields of medicine and surgery.
When anesthesia was discovered, it was referred to as the greatest gift ever made to suffering humanity. During the later part of the 18th century, evident change and advancement in medical technology took place. Two major advancements occurred during this era: the identification of germ cell theory and the promotion of anesthesia in surgery. Continuous research and the development of new tools led to major changes in how diseases were investigated and treated.
It was Horace Wells, a dentist, who introduced nitric oxide into the field of dentistry (James, 2009). The combination of nitric oxide and diethyl ether was being used by dentists to relieve pain, but it became unsuccessful during a dental surgery demonstration at Massachusetts General Hospital. Building on this idea, in 1846, Dr. William Thomas Morton — a dentist in Boston — used a combination of nitric oxide and sulfuric ether to painlessly remove a vascular tumor from his patient's jaw (Medicine's Greatest Gift, 2012, Massachusetts General Hospital), using a specially designed glass container containing a sponge soaked in ether (Hoffman and Martin, 2012). This was the first public demonstration of ether anesthesia, and students present realized for the first time that a surgical procedure could be painless. Morton soon gained widespread recognition. By the end of 1847, pamphlets and books on anesthesia had been published in the United States and Europe, and for the first time a safe and efficient anesthetic had been demonstrated.
Crawford Williamson Long (1815–1878) is regarded as the "Pioneer of Surgical Anesthesia" for his work and observations on using diethyl ether as an anesthetic. He brought a turning point to medical and surgical history — the moment when doctors no longer had to concern themselves with patients' screams in the operating theater. The day of this discovery of painless surgery is remembered as "Doctors Day." On 30 March 1842, Long used diethyl ether to painlessly remove a tumor from a patient's neck; he subsequently removed another tumor and used ether in childbirths and amputations. The observations and results of these trials were published in the Southern Medical and Surgical Journal. He died in Athens, and his last words were, "Care for mother and child first." For his work he is regarded as the "Father of Anesthesiology" (Hani, 2010).
The use of ether became a cultural foundation for anesthesiologists. Thomas Lee of Boston established a monument in a public garden in 1868 to convey to the public that inhalation of ether causes loss of pain (Conquering Surgical Pain: Four Men Stake Their Claims, 2012, Massachusetts General Hospital). It was publicly declared: "We have conquered pain."
Horace Wells (1815–1848) used nitric oxide — also known as laughing gas — as anesthesia for his patients. However, because of its short duration of action, it did not produce favorable outcomes. Nitric oxide was first discovered in 1722 by Joseph Priestley in England. In 1799, its anesthetic properties were discovered by Humphry Davy (1778–1829), who advised that nitric oxide could negate the pain and shock of surgical procedures. A third contributor who continued with Morton and Wells's philosophy was Charles T. Jackson, and the fourth was Thomas Morton (Blatner, 2009).
In 1848, James Simpson used chloroform in obstetric surgery, using diethyl ether to anesthetize a woman with a pelvic deformity for delivery (Kodali, 2009). In 1853, John Snow successfully administered chloroform to Queen Victoria at the birth of Prince Leopold, and also to Fanny Longfellow, who wrote to her poet brother that the use of ether was "certainly the greatest blessing of this era" (Longfellow, 1956). In 1885, William Halsted introduced the nerve block. In 1891, Heinrich Quincke demonstrated the process of lumbar puncture. Successful clinical use of spinal anesthesia was subsequently introduced by August Bier. The first school of anesthesia in the United States was established in 1909. In 1915, carbon dioxide was used as an absorber for general anesthesia by D.F. Jackson (Bergman, 1991).
Before administering anesthesia, pre-anesthetic medications are used to calm the patient, relieve pain, and prevent undesirable effects. These include: anti-cholinergics (to prevent bradycardia), antihistamines (to prevent allergic reactions), barbiturates (to cause sedation), antiemetics (to prevent aspiration of gastric contents and post-operative nausea and vomiting), benzodiazepines (to relieve stress and anxiety), opioids (serving as analgesics), and muscle relaxants (to aid muscle relaxation and intubation).
"General, local, induction stages, and drug classifications"
"Criticism, nurse anesthetists, monitoring advances, and societies"
With time, the need for anesthesia has gained importance, and further research and study in this field have minimized its risks. It has also changed humanity's perspective on the pain of surgery (Larkin, 2008). Anesthesia opened the door to modern surgical procedures and safe childbirth. Its use causes a reversible loss of consciousness and has, over the years, played a vital role in medicine, providing health practitioners with a respectable and honorable place in society.
The safe use of anesthesia by skilled and knowledgeable health practitioners has influenced culture; people are now more willing to undergo surgical procedures, which have become more advanced, less time-consuming, and, most importantly, painless. This has overcome the old perception of surgery as a brutal and extremely painful process in which crude methods were employed and the risks of sepsis and asphyxia were high. Anesthesia has made it possible to say that surgery without it is inconceivable. The advent of anesthesia allowed doctors to gain social importance and respect over time, permanently transforming the relationship between medicine, pain, and the patient.
You’re 58% through this paper. Sign up to read the remaining 2 sections.
Sign Up Now — Instant Access Already a member? Log inAlways verify citation format against your institution’s current style guide requirements.