Arch Surg. 1937;34(5):853-867. doi:10.1001/archsurg.1937.01190110096005.
Text Size: A A A
Published online

The experimental background for encephalography with the use of anesthetic gases has been reported in previous articles.1 The characteristics of the severe and prolonged reaction following the injection of air and the attempts of various workers to find a suitable substitute were discussed. The use of oxygen by Jüngling2 in 1922, by Denk3 in 1923 and more recently in Penfield's clinic,4 as well as the trial of carbon dioxide, nitrogen and helium by Liberson,5 were mentioned. A review of the literature on the experimental trial of various opaque fluids was also presented. A theoretical consideration of the various factors involved in the problem of encephalography led to the establishment of certain criteria. In this connection it occurred to me that an anesthetic gas might approximate the ideal desired. In brief, it seemed possible that even potent anesthetic gases might prove safe, since only a limited


Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
First page PDF preview





Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment


Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.