Medical Terminology Daily - Est. 2012

Medical Terminology Daily (MTD) is a blog sponsored by Clinical Anatomy Associates, Inc. as a service to the medical community. We post anatomical, medical or surgical terms, their meaning and usage, as well as biographical notes on anatomists, surgeons, and researchers through the ages. Be warned that some of the images used depict human anatomical specimens.

You are welcome to submit questions and suggestions using our "Contact Us" form. The information on this blog follows the terms on our "Privacy and Security Statement" and cannot be construed as medical guidance or instructions for treatment.


We have 817 guests online


A Moment in History

Jean George Bachman

Jean George Bachmann
(1877 – 1959)

French physician–physiologist whose experimental work in the early twentieth century provided the first clear functional description of a preferential interatrial conduction pathway. This structure, eponymically named “Bachmann’s bundle”, plays a central role in normal atrial activation and in the pathophysiology of interatrial block and atrial arrhythmias.

As a young man, Bachmann served as a merchant sailor, crossing the Atlantic multiple times. He emigrated to the United States in 1902 and earned his medical degree at the top of his class from Jefferson Medical College in Philadelphia in 1907. He stayed at this Medical College as a demonstrator and physiologist. In 1910, he joined Emory University in Atlanta. Between 1917 -1918 he served as a medical officer in the US Army. He retired from Emory in 1947 and continued his private medical practice until his death in 1959.

On the personal side, Bachmann was a man of many talents: a polyglot, he was fluent in German, French, Spanish and English. He was a chef in his own right and occasionally worked as a chef in international hotels. In fact, he paid his tuition at Jefferson Medical College, working both as a chef and as a language tutor.

The intrinsic cardiac conduction system was a major focus of cardiovascular research in the late nineteenth and early twentieth centuries. The atrioventricular (AV) node was discovered and described by Sunao Tawara and Karl Albert Aschoff in 1906, and the sinoatrial node by Arthur Keith and Martin Flack in 1907.

While the connections that distribute the electrical impulse from the AV node to the ventricles were known through the works of Wilhelm His Jr, in 1893 and Jan Evangelista Purkinje in 1839, the mechanism by which electrical impulses spread between the atria remained uncertain.

In 1916 Bachmann published a paper titled “The Inter-Auricular Time Interval” in the American Journal of Physiology. Bachmann measured activation times between the right and left atria and demonstrated that interruption of a distinct anterior interatrial muscular band resulted in delayed left atrial activation. He concluded that this band constituted the principal route for rapid interatrial conduction.

Subsequent anatomical and electrophysiological studies confirmed the importance of the structure described by Bachmann, which came to bear his name. Bachmann’s bundle is now recognized as a key determinant of atrial activation patterns, and its dysfunction is associated with interatrial block, atrial fibrillation, and abnormal P-wave morphology. His work remains foundational in both basic cardiac anatomy and clinical electrophysiology.

Sources and references
1. Bachmann G. “The inter-auricular time interval”. Am J Physiol. 1916;41:309–320.
2. Hurst JW. “Profiles in Cardiology: Jean George Bachmann (1877–1959)”. Clin Cardiol. 1987;10:185–187.
3. Lemery R, Guiraudon G, Veinot JP. “Anatomic description of Bachmann’s bundle and its relation to the atrial septum”. Am J Cardiol. 2003;91:148–152.
4. "Remembering the canonical discoverers of the core components of the mammalian cardiac conduction system: Keith and Flack, Aschoff and Tawara, His, and Purkinje" Icilio Cavero and Henry Holzgrefe Advances in Physiology Education 2022 46:4, 549-579.
5. Knol WG, de Vos CB, Crijns HJGM, et al. “The Bachmann bundle and interatrial conduction” Heart Rhythm. 2019;16:127–133.
6. “Iatrogenic biatrial flutter. The role of the Bachmann’s bundle” Constán E.; García F., Linde, A.. Complejo Hospitalario de Jaén, Jaén. Spain
7. Keith A, Flack M. The form and nature of the muscular connections between the primary divisions of the vertebrate heart. J Anat Physiol 41: 172–189, 1907.


 "Clinical Anatomy Associates, Inc., and the contributors of "Medical Terminology Daily" wish to thank all individuals who donate their bodies and tissues for the advancement of education and research”.

Click here for more information


abebooks banner

bookplateink.com

 

 

This article is part of the series "A Moment in History" where we honor those who have contributed to the growth of medical knowledge in the areas of anatomy, medicine, surgery, and medical research.

Image of the Annotated Fabrica 
Annotated Fabrica

Everybody has the hope of someday finding a treasure, and we look for it in garage sales, antique shops, anywhere and everywhere. As a book collector, I live for the day when I find a precious book that has been overlooked and that I can add to my collection. This is the story of such a find by a book collector who not only found the treasure, but sold it!!.

No one knows exactly how many copies were printed of Andrea Vesalius' magnificent book “De Humani Corporis Fabrica, Libri Septem”. It is estimated that each run of the first (1543) and second (1555) editions were between 600 -1000 copies, maybe less.  The censuses on the surviving copies of this book published by S. Joffe, MD and V. Buchanan in 2015 tell us that less than 60 copies of each of these books exist in the USA, and the total worldwide number is unknown.

Most of the books available today are in rare book repositories at university libraries, and only a few are available to private book collectors.

The price for a good copy today is close to half a million US dollars (or more). Although some copies can be found for less, they are probably not original, and could be one of the many plagiarized copies of this wonderful book.

In 2007, Vancouver pathologist and book collector Dr. Gerard Vogrincic bought a Fabrica at auction in Germany. This was not the best copy of the Fabrica. The index (an important part of the book, as it was the first anatomy book to ever have one) was missing, but most important, the book text was heavily underlined and annotated; some paragraphs were crossed out with ink, and over one thousand annotations were found on the sides of the pages, as well as in the images, a critical part of this book and the reason for its fame. As a result, the price at the auction was not too high, as it sold for US$14,256.

A careful revision of the handwritten notes led Dr. Vogrincic to believe that the notes may have been written by Vesalius himself, but he had no idea of how to confirm it and he could not read Latin, the language of the annotations. There are only a few examples of Vesalius’ handwriting, as Vesalius burned many of his notes and letters, and only some survived. Dr. Vogrincic obtained a facsimile of one of Vesalius’ letters and was surprised that indeed the writings matched!

Dr. Vogrincic contacted Dr. Vivian Nutton, Emeritus Professor at the UCL Center for the History of Medicine in London. Dr. Nutton, a Latin scholar and Vesalius expert confirmed that this was a book that not only belonged to Vesalius, but that the handwriting, and the style of the Latin annotations was Vesalius'!. The book includes corrections to the style, grammar, anatomy, images, and also instructions for a third edition that was never published.

For a time, the book was on a "permanent" loan at the Thomas Fisher Rare Book Library in University of Toronto, Canada, part of a 2015 exhibit, and was an important addition to the translation and annotations for the “New Fabrica” authored by Drs. M. Hast and D. Garrison. The New Fabrica is now out of print.

In 2022, toward the end of the COVID pandemic,  the University of Cincinnati and the Henry R. Winkler Center for the History of the Health Professions, held an online and in-person exhibit and series of lectures entitled  "The Illustrated Human: The Impact of Andreas Vesalius". One of the lectures was on the Annotated Fabrica. You can watch the whole lecture and interview with Dr. Gerard Vogrincic and Dr. Vivian Nutton here. Here is the link for "The Illustrated Human online exhibit".

Following is a YouTube video by Philip Oldfield, curator of the Thomas Fisher Rare Book Library in University of Toronto, Canada, talking about this book

This book was sold on February 2nd, 2024 on auction at Christie's New York, for the incredible sum of 2.23 million US dollars. his is one of the top 10 highest amounts of money ever paid for a book. The link posted here will take you to the auction page and 17 images and a video by Christie's curator Rhiannon Kohl.  

It is only fitting that the buyer of the Annotated Fabrica was non other than the University of Leuven, in Belgium, which is the first University that Vesalius attended. In fact, one of the most treasured documents of this University (until now) was the book where Vesalius signed when he matriculated at the University of Louvain (Louven) on February 25, 1530, at 15 years of age. He signed this registry as "Andreas Vesalius Bruxellensis". I had the opportunity of seeing this document personally in 2003.

My personal thanks to my good friend Ron Blumenfeld, MD, world traveler, collector, and author of the book "The King's Anatomist, The Journey of Andreas Vesalius" for bringing this auction to my attention.  He also posted an article about this auction titled "Five Centuries Later, Andreas Vesalius Flashes His Star Power". 

Another article on this topic was published by New Atlas titled ""Bookfind of the century" sells for $2.23 million"

Sources:
1. “The annotated Vesalius” Duffin, J; Duffin, J. CMAJ (2014) 186:11, 856-857
2. “A Clever Collector Makes an Astonishing Discovery” Vogrincic, Click here for the article
3. “Vesalius Revised. His Annotations to the 1555 Fabrica” Nutton, V. Med. Hist. (2012), 56(4), 415–443 Click here for the article
4. “Updated Census in USA of First Edition of Andreas Vesalius’ ‘De Humani Corporis Fabrica’ of 1543” Joffe, SN; Buchanan V. International Archives of Medicine; 2015: 8:1
5. “An Updated Census of the Edition of 1555 of Andreas Vesalius’ De Humani Corporis Fabrica in the United States of America” International Archives of Medicine; 2015: 8:1
6. “Vesalius’ notes for unpublished edition of De Fabrica” Click here for the website 
7. "A Spectacular New Arrival" Oldfield, P; The Halcyon, Issue 49, June 2012 Click here for the article
Note: This article was originally published in 2017, and has been updated several times, in 2019, 2022, and 2023. This is the last version (for now).