Astrocyte

CHRONICLES OF MEDICINE: PIONEERS IN CARDIOLOGY
Year
: 2015  |  Volume : 1  |  Issue : 4  |  Page : 305--308

The men who picked the truant notes in heart sounds


Praveen K Malik1, Mushtaque Ahmad1, Archana Rani1, Shridhar Dwivedi2,  
1 Department of Medicine, Hamadard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi, India
2 Department of Medicine and Preventive Cardiology, Hamadard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi, India

Correspondence Address:
Dr. Praveen K Malik
G15, Department of Medicine, HIMSR, Jamia Hamdard, New Delhi - 62
India

Abstract

Since the invention of stethoscope by Rene Laennec, auscultation has become sine qua non of clinical examination, especially for cardiovascular system. Many clinical signs are named after the first describer, as a tribute to their efforts. So is true for cardiac murmurs. Sir Graham Steell was a British cardiologist who described the high pitched diastolic murmur of pulmonary regurgitation. Diastolic murmur of severe aortic regurgitation is named after American physician, Austin Flint, who actually disapproved eponyms. American physician Richard Clarke Cabot and his colleague Locke described early diastolic murmur of severe anemia, which is thought to be due to high flow in left coronary artery. The name of Carey Coomb, a British cardiologist, is associated with mid-systolic murmur of mitral valvulitis in acute rheumatic fever. Left anterior descending arterial stenosis sometimes produces an early diastolic murmur and it was first described by American physician William Dock. The machinery murmur of patent ductus arteriosus was first described by George Alexander Gibson. Key-Hodgkin murmur is the diastolic murmur of aortic regurgitation, named after Thomas Hodgkin and Charles Ashton Key. French pediatrician Henri Louis Roger described the holosystolic murmur of ventricular septal defect and his name is also associated with Maladie de Roger. Sir George Frederic Still, an English paediatrician, whose name is associated with juvenile idiopathic arthritis described the innocent functional murmur mostly heard in children. It was Louis Gallavardin, a French physician, who described the phenomenon of dissociation of musical component and noisy component of aortic stenosis. Though the popularity of such eponyms are on wane due to advent of phonocardiography and ECHO Doppler, one hopes some newer descriptions of murmurs due to changing profile of cardio-vascular diseases will emerge in near future.



How to cite this article:
Malik PK, Ahmad M, Rani A, Dwivedi S. The men who picked the truant notes in heart sounds.Astrocyte 2015;1:305-308


How to cite this URL:
Malik PK, Ahmad M, Rani A, Dwivedi S. The men who picked the truant notes in heart sounds. Astrocyte [serial online] 2015 [cited 2019 May 21 ];1:305-308
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Full Text

 Introduction



Auscultation forms one of the most important steps in clinical examination of cardiovascular system. Through this, we gain an understanding of cardiac rate and rhythm, condition of the valves and possible anatomical abnormalities such as congenital defects. Murmurs are relatively prolonged sounds due to turbulence of blood flow through a constricted or irregular opening. They may range from very faint to very loud. Sometimes they sound like a whooshing or swishing noise. Stethoscope was invented by René Laennec in 1819, since then the art of auscultation has grown rapidly. Many astute clinicians described the different heart murmurs. A race to discover and define ensued. Pioneers of those times published their new findings, and a robust list of eponyms was made for the generations of physicians and medical trainees to come.

An attempt is being made here to describe in brief such murmurs which go by the name of their discoverer. Notable ones are given below:

 Graham Steell Murmur



This murmur is typically associated with pulmonary regurgitation. It is a high pitched early diastolic murmur heard best at the left sternal edge in second intercostal space with the patient in full inspiration. A high velocity regurgitant flow across the pulmonary valve produces the murmur, which is usually a consequence of pulmonary hypertension. It is often heard in patients with chronic cor pulmonale as a result of chronic obstructive pulmonary diseases.

The murmur was named after Graham Steell (1851-1942) [Figure 1]. He was a British physician and cardiologist [1] and described his eponymous murmur in a paper presented to the Manchester Medical Society, which was later published in 1883.{Figure 1}

 Austin Flint Murmur



It is a low-pitched rumbling murmur best heard at the cardiac apex associated with severe aortic regurgitation. It can be a mid-diastolic or presystolic murmur, produced by functional narrowing of mitral valve due to displacement of anterior leaflet by the regurgitant jet. Turbulent mixing of antegrade mitral flow and retrograde aortic flow is also proposed for the same.

The murmur is named after the 19 th century American physician Austin Flint (1812-1886) [Figure 2]. He was the founder of Buffalo Medical College, precursor to the State University of New York at Buffalo. [2] He served as president of the American Medical Association. Ironically, he disapproved associating any physical sign with the name of the original describer. As written by him "So long as signs are determined from fancied analogies, and named from these or after the person who describes them, there cannot but be obscurity and confusion." [3] {Figure 2}

 Cabot-Locke Murmur



It is an early diastolic murmur, occasionally heard in severe anemia, without any valvular abnormality. The murmur is best heard at the left sternal border and its characteristics are similar to that of aortic insufficiency but without decrescendo pattern. Its location, timing, association with severe anemia, and resolution upon correction of anemia, are consistent with the hypothesis that it arises from high volume flow through left main coronary artery, which has almost entirely diastolic flow.

It is named after Richard Clarke Cabot and his colleague, Locke. They reported on a series of three patients who had been clinically diagnosed with heart valve disease, but who had normal valvular anatomy at subsequent autopsy. Richard Clarke Cabot (1868-1939) was an American physician who advanced clinical hematology, an innovator in teaching methods, and was a pioneer in social work. He is also credited with discovering Cabot rings, found on rare occasions in red blood cells observed in few cases of pernicious anemia, lead poisoning, and certain other disorders of red blood cell production. [4]

 Carey Coombs Murmur or Coombs Murmur



It is a clinical sign found in patients with mitral valvulitis in acute rheumatic fever. It is a short, mid-diastolic rumbling murmur, best heard at the apex and disappears when the valvulitis subsides. It is often associated with an S3 gallop rhythm, and can be distinguished from the diastolic murmur of mitral stenosis by the absence of an opening snap before the murmur. The murmur is caused by increased blood flow across an edematous thickened mitral valve.

The sign is named after Carey Coombs (1879-1932) who was a British cardiologist. He was awarded his M.B. in 1901, M.D. in 1903, and awarded Fellowship of the Royal College of Physicians in 1917. In 1910, he made one of the earliest diagnoses of coronary thrombosis, and before his death in 1932, he had documented 144 cases of this condition. His best known written work is rheumatic heart disease, which was published in 1924. [5]

 Dock's Murmur



This is an early diastolic murmur similar to that of aortic regurgitation and is heard at the left second or third intercostal space. It is occasionally heard in cases of left anterior descending artery stenosis. A coronary artery bypass surgery can eliminate the murmur. [6]

It was named after American doctor William Dock (1898-1990) who was a devoted career academician. He was aware of the thromboembolic complications caused by prolonged bed rest, and he recommended early ambulation. At a symposium at Cornell, he presented the topic "The abuse of bed rest".

 Gibson's Murmur



Also known as machinery murmur, it is a continuous murmur that occurs in a patient with patent ductus arteriosus. It results from continuous flow from aorta to pulmonary artery since aortic pressure is higher than pulmonary pressure throughout cardiac cycle.

The murmur is named after George Alexander Gibson, who characterized it in 1898. [7] He was a committed teacher and academician who practiced in London at the turn of the 20th century. In his most significant work, diseases of the heart and aorta, he described this murmur among patients with persistent patent ductus arteriosus.

 Key-Hodgkin Murmur



This is the diastolic murmur of aortic regurgitation. It has a raspy quality, similar to the sound of a saw cutting through wood.

Hodgkin correlated the murmur with retroversion of the aortic valve leaflets seen in post mortem. Charles Ashton Key (1793-1849) was a famous surgeon in London, the undisputed pinnacle of surgical activity during his time, and was a contemporary of Thomas Hodgkin (1798-1866) [Figure 3], the physician for whom Hodgkin's lymphoma is named. [8] In 1845, key was one of the first elected fellows of the Royal College of Surgeons, and in the same year he became a member of its council. In 1847, he was appointed surgeon to Prince Albert. He died of cholera on August 23, 1849, leaving nine children. [9] {Figure 3}

 Roger's Murmur



Roger's murmur of ventricular septal defect is holosystolic and heard best at the left upper sternal border. The murmur is loud, and its sound has been compared with that of a rushing waterfall. It is accompanied by a harsh thrill. The smaller the ventricular septal defect, the louder is the murmur.

The French physician Henri-Louis Roger (1809-1891) was a pediatrician who developed a special interest in auscultation while working in Paris at the children's hospital, Hôpital des Enfants-Malades, during the mid-late 1800s. His name is also lent to another eponymous term: Maladie de Roger (Roger's disease), which is a small congenital asymptomatic ventricular septal defect. [10]

 Still's Murmur



Also known as vibratory murmur, it is a common type of benign or "innocent" functional heart murmur that is not associated with any sort of cardiac disorder or any other medical condition. It can occur at any age, but most common among children of two to seven years. It is rare in adults.

Sir George Frederic Still, (1868-1941) was an English pediatrician and author of numerous medical textbooks and articles who first described a form of juvenile idiopathic arthritis (Still's Disease) as well as the common functional Still's murmur. He was the first to describe attention deficit hyperactivity syndrome (ADHD). He is frequently referred to as "father of British pediatrics". [11]

 Duroziez's Murmur



It is one of the peripheral signs of aortic insufficiency. It denotes an audible diastolic murmur, which can be heard over the femoral artery when it is compressed with the bell of a stethoscope.

It was named after Paul Louis Duroziez (1826-1897), who was a French physician remembered for his description of Duroziez's sign and Duroziez's disease, which is a congenital variant of mitral stenosis. He studied medicine in Paris and graduated during 1853.

 Cole-Cecil Murmur



It is a diastolic murmur heard near the axilla or mid left thorax. It is produced by fusion of aortic incompetence murmur and 3 rd heart sound (S3) which is due to simultaneous filling of LV from the left atrium and AR.

 Rytand's Murmur



Occasionally in patients with complete atrioventricular heart block, a mid-diastolic murmur is heard at the apex often confusing with mitral stenosis. The mechanism of Rytand's murmur is not very clear but increased flow due to slow heart rate and increased antegrade flow with atrial contraction, which occurs randomly, may be contributory.

 Seagull Murmur



Now, a murmur that is named after a bird, rather than a human. It is a raucous murmur with musical qualities, which are heard occasionally in aortic insufficiency. A "seagull's cry murmur" is defined as a murmur imitating the cooing sound of a seagull, and may occur as a result of various valve diseases. It is usually described as a sign of tight calcific aortic stenosis. Gallavardin's phenomenon is dissociation between the noisy and musical components of systolic murmur of aortic stenosis. In this condition, the typical harsh timbre of the ejective murmur tends to assume a musical high pitched quality, resembling that of mitral regurgitation, which may be reminiscent of the cry of a seagull. A seagull's cry murmur may also be the sign of mitral regurgitation or prolapsed, which reflects the presence of high frequency components due to high velocities of reflow.

The phenomenon was named after French physician Louis Gallavardin (1875-1957), who described it during 1925 along with Ravault. He studied angina pectoris, described the syndrome in Les Angines de Poitrine in 1925; and maintained the belief that coronary artery disease was the cause. [12]

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