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Application of Laparoscopic Ultrasonography in Primary Choledochal Suture during Combined Two-lens Surgery

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Surgeons' contribution to Japanese anesthesiology.

Shigemasa Ikeda^1,2

¹Department of Anesthesiology and Critical Care, St. Louis University School of Medicine, St. Louis, MO, USA. shigemasa.ikeda@slu.edu.

Journal of Anesthesia

|June 15, 2026

Summary

This summary is machine-generated.

Dr. Seiji Tsuda

Keywords:

Anesthesiology History Japan Surgeon

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Area of Science:

Medical History
Anesthesiology
History of Medicine in Japan

Background:

Anesthesiology emerged as an independent medical specialty in Japan during the 1950s.
Prior to this, anesthesia was administered by surgeons, with knowledge often limited to general surgery textbook chapters.
Early contributions to anesthesiology literature were crucial for establishing the field.

Purpose of the Study:

To review Professor Seiji Tsuda's 1940 anesthesiology textbook and its revisions.
To discuss the historical significance of Tsuda's work in the development of Japanese anesthesiology.
To highlight foundational contributions to the specialty before its formal recognition.

Main Methods:

Historical literature review of Professor Tsuda's 1940 anesthesiology book.
Analysis of the book's revisions in 1947 and 1957.
Examination of the context of anesthesiology in Japan during the mid-20th century.

Main Results:

Professor Tsuda, a surgeon, published the first comprehensive Japanese anesthesiology textbook in 1940.
The book was revised multiple times, indicating its importance and continued relevance.
Tsuda's work predated the formal establishment of anesthesiology as a distinct specialty in Japan.

Conclusions:

Professor Tsuda's textbooks were pivotal in advancing anesthesiology in Japan.
His work represented a significant step towards recognizing anesthesiology as a separate discipline.
These publications laid groundwork for future anesthesiologists, including Dr. Michinosuke Amano.