In 1920, what technique was perfected that allowed greater control of patient ventilation and anesthetic administration during surgical procedures?

A) anesthetic reversal drugs
B) endotracheal intubation
C) inhalation route of administration
D) subcutaneous administration of local anesthesia


Answer: B

A) Anesthetic reversal drugs are not a technique.
C) The inhalation route of anesthesia was not perfected in 1920.
D) The subcutaneous administration of local anesthesia was not perfected in 1920.

Health & Biomechanics

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