Arthur Ernest Guedel

Arthur Ernest Guedel (born June 13, 1883 in Cambridge City , Indiana , † 1956 in Los Angeles ) was an American anesthetist . His name became known through the development of the stages of anesthesia named after him. He conducted extensive studies on the uptake and distribution of volatile narcotics , as well as the differentiation of the various stages of anesthesia . He also developed an oropharyngeal tube , the Guedel tube .

Stages of anesthesia according to Guedel

Guedel described in an article in 1920 (and in a book in 1937) stages of the depth of anesthesia in ether anesthesia with diethyl ether. On the basis of reflexes , movements, pupil size , breathing , pulse strength and consciousness status of the patient , he differentiated four stages of ether anesthesia: sleep stage, excitation stage, tolerance stage (with four sub-stages) and asphyctic stage. This scheme lost its importance in the second half of the 20th century with the development of modern anesthesia. With today's use of drug combinations ( balanced anesthesia ), among other things, the administration of opioids , which make the assessment of the pupillary changes impossible, and muscle relaxants , which suppress the patient's defensive movements. However, during induction of anesthesia by means of inhaled anesthetics , which is still practiced in children today, an excitation stage occurs.

Individual evidence

^ AE Guedel: Inhalation anesthesia: a fundamental guide. Macmillan, New York 1937.
↑ Arthur E. Guedel: Third stage ether anesthesia: a sub-classification regarding the significance of the position and movements of the eyeball. In: Nat. Anesth. Res. Soc. Bull. 3, 1920, pp. 1-4.
↑ M. Burghardt, H. Theilen: How reliable is an anesthetic? Procedure for measuring the depth of anesthesia during operations. In: Scientific journal of the Technical University of Dresden. 57 (2008) issue 1-2.

literature

TE Keys: Historical vignettes: Dr. Arthur Ernest Guedel 1883-1956. In: Anesth Analg. 54 (4), 1975 Jul-Aug, pp. 442-443. PMID 1096680

Web links

Pioneers: Arthur E. Guedel, MD, 1883 - 1956. ( Memento of May 10, 2012 in the Internet Archive ) at: cpmc.org

personal data
SURNAME	Guedel, Arthur Ernest
BRIEF DESCRIPTION	American anesthetist
DATE OF BIRTH	June 13, 1883
PLACE OF BIRTH	Cambridge City , Indiana
DATE OF DEATH	1956
Place of death	los Angeles

[1] AE Guedel: Inhalation anesthesia: a fundamental guide. Macmillan, New York 1937.

[2] Arthur E. Guedel: Third stage ether anesthesia: a sub-classification regarding the significance of the position and movements of the eyeball. In: Nat. Anesth. Res. Soc. Bull. 3, 1920, pp. 1-4.

[3] M. Burghardt, H. Theilen: How reliable is an anesthetic? Procedure for measuring the depth of anesthesia during operations. In: Scientific journal of the Technical University of Dresden. 57 (2008) issue 1-2.