Austin flint murmur

A type of heart murmur associated with aortic regurgitation

Austin Flint murmur
Synonyms	N/A
Pronounce	N/A
Specialty	N/A
Symptoms	Low-pitched, rumbling heart murmur
Complications	N/A
Onset	N/A
Duration	N/A
Types	N/A
Causes	Aortic regurgitation
Risks	N/A
Diagnosis	Auscultation
Differential diagnosis	N/A
Prevention	N/A
Treatment	N/A
Medication	N/A
Prognosis	N/A
Frequency	N/A
Deaths	N/A

The Austin Flint murmur is a type of heart murmur that is typically associated with aortic regurgitation. It is named after the American physician Austin Flint who first described it in the 19th century. This murmur is characterized by a low-pitched, rumbling sound that is best heard at the cardiac apex during diastole.

Pathophysiology

The Austin Flint murmur occurs due to the regurgitant flow of blood from the aorta back into the left ventricle during diastole. This regurgitant flow can cause the anterior leaflet of the mitral valve to vibrate, leading to the characteristic murmur. The vibration is thought to be due to the turbulent mixing of the regurgitant aortic flow with the normal mitral inflow.

Clinical Presentation

Patients with an Austin Flint murmur often have underlying aortic regurgitation, which may be due to conditions such as aortic valve insufficiency, rheumatic heart disease, or aortic root dilation. Symptoms of aortic regurgitation can include dyspnea, fatigue, and palpitations.

Diagnosis

The Austin Flint murmur is typically diagnosed through auscultation with a stethoscope. It is best heard at the cardiac apex, and it is often described as a low-pitched, rumbling diastolic murmur. The murmur may be confused with a mitral stenosis murmur, but it lacks the opening snap that is characteristic of mitral stenosis.

Differential Diagnosis

The differential diagnosis for an Austin Flint murmur includes:

• Mitral stenosis
• Aortic stenosis
• Mitral regurgitation

Management

Management of an Austin Flint murmur involves addressing the underlying cause of aortic regurgitation. This may include medical management with vasodilators or surgical intervention such as aortic valve replacement.

Prognosis

The prognosis for patients with an Austin Flint murmur depends on the severity of the underlying aortic regurgitation and the presence of any associated cardiac conditions. Early diagnosis and appropriate management can improve outcomes.

History

The murmur was first described by Austin Flint in 1862. Flint was a prominent American physician known for his contributions to the field of cardiology.

Also see

• Aortic regurgitation
• Mitral valve
• Heart murmur
• Auscultation

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