In the mid-19th century, surgical procedures were a nightmare for patients and doctors alike. Without effective pain relief, surgeries were excruciating, often leading to shock or death. Enter Dr. William T.G. Morton, a dentist with a penchant for experimentation.
In 1846, Morton was determined to find a way to perform dental procedures without causing pain. He had heard of “laughing gas” (nitrous oxide) but found it unreliable. His curiosity led him to ether, a volatile liquid known for its intoxicating effects.
On October 16, 1846, at Massachusetts General Hospital, Morton administered ether to a patient requiring surgery to remove a neck tumor. As the patient inhaled the fumes, he drifted into unconsciousness. Surgeon Dr. John Collins Warren proceeded with the operation, and to everyone’s astonishment, the patient felt no pain and had no recollection of the procedure. This groundbreaking event marked the dawn of surgical anesthesia, revolutionizing medicine by making painless surgery possible and opening the door to more complex procedures.
Question: Pharmacology
A nurse is preparing a patient for surgery under general anesthesia. Which of the following statements about inhalation anesthetic agents are accurate? (Select all that apply.)
A) “Inhalation anesthetics are primarily eliminated from the body through hepatic metabolism.”
B) “These agents can cause respiratory depression as a side effect.”
C) “Inhalation anesthetics provide both analgesia and amnesia during surgery.”
D) “They are often used in combination with intravenous anesthetic agents for balanced anesthesia.”
E) “Patients may experience shivering during recovery from inhalation anesthesia.”
Correct Answers: B, C, D, E
Rationale:
- A) Incorrect. Inhalation anesthetics are primarily eliminated through the lungs via exhalation, not hepatic metabolism.
- B) Correct. Respiratory depression is a known side effect of inhalation anesthetics, requiring careful monitoring during administration.
- C) Correct. These agents induce both analgesia (pain relief) and amnesia (loss of memory) during surgical procedures.
- D) Correct. Inhalation anesthetics are often combined with intravenous agents to achieve balanced anesthesia, optimizing the benefits of each.
- E) Correct. Shivering, or postoperative hypothermia, is a common occurrence during recovery from inhalation anesthesia.
Robinson, D. H., & Toledo, A. H. (2012). Historical development of modern anesthesia. Journal of Investigative Surgery, 25(3), 141–149. https://doi.org/10.3109/08941939.2012.690328