Remembering the Father of Clinical Auscultation
by Vasudeva Iyer, MD
The year 2026 will mark the bicentennial obituary of one of the most accomplished physicians who literally revolutionized the practice of clinical medicine: Rene Theophile Hyacinth Laennec( 1781-1826), the inventor of the stethoscope and the father of clinical auscultation.
I am sure many of us vividly remember the day we got our first stethoscope, hung it around our necks and proudly paraded in front of family and friends. Armed with the brand-new stethoscope and other paraphernalia, I was quite excited to start learning the art and science of clinical medicine many decades ago. The first day of rotation in internal medicine was awesome as an enthusiastic junior faculty member managed to bring in several patient volunteers, so that the students could listen and learn common heart murmurs. This was the pre-cassette era; we did not have recordings to listen to. It was obvious that the patient volunteers were quite proud of their unique“ assets” and glad that the novice could learn from them. I was reminded of the quote attributed to Sir William Osler:“ Listen to your patient, he is telling you the diagnosis.”
I can’ t forget the first time I heard the mid-diastolic rumble of mitral stenosis and the high-pitched decrescendo murmur of aortic
René Théophile Hyacinthe Laënnec. Reproduction of miniature on ivory. This file is licensed under the Creative Commons Attribution 4.0 International license. regurgitation. Day 2 was devoted to listening to breath sounds and the first encounter with rales and rhonchi and the“ amphoric” breathing( typical of a lung cavity) was phenomenal. It took about four weeks before I experienced the thrill of hearing the unique sound of the pleural rub and the captivating“ gallop rhythm.” Learning that many new materials in a short time was a bit overwhelming( obviously my superior temporal gyrus neurons were not up to the task), and I was forced to design a system to make permanent memory of these unique auditory experiences. I started a pocketbook( that was the pre-computer era) titled“ Music from the Chest” in which each page was devoted to a specific auscultatory phenomenon; the sound characteristics were described in simple terms or diagrams along with pictures of the underlying pathology( thanks to the anatomic pathology specimen collection in the medical school). During the next several months, many more diagnostic auscultatory phenomena were learned such as the loud pansystolic“ roar” of VSD and the soft systolic murmur of ASD with the incredible fixed splitting of the second heart sound.
Once I became a neurology resident, the number of times I used the stethoscope for“ clinching the diagnosis” dwindled. I started keeping
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