Historically, anaesthesia was inhalation based. Nitrous oxide was first used in 1844, ether in 1846 and chloroform the following year.

IV induction was introduced in the early 20^th Century with the synthesis of barbiturates. Thiopental (Pentothal sodium) was introduced into clinical practice in the 1930s. It revolutionized induction of anaesthesia by reducing the time of induction, so that less time was spent in the traumatic second stage of anaesthesia.

Question: Can you name the object shown in this image?

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Historically, anaesthesia was inhalation based. Nitrous oxide was first used in 1844, ether in 1846 and chloroform the following year.

IV induction was introduced in the early 20^th Century with the synthesis of barbiturates. Thiopental (Pentothal sodium) was introduced into clinical practice in the 1930s. It revolutionized induction of anaesthesia by reducing the time of induction, so that less time was spent in the traumatic second stage of anaesthesia.

Question: Can you name the object shown in this image?

Answer: It is a Goldman nasal mask which was used for inhalational anaesthesia in the dental chair.