Heart murmur pathophysiology
|
Heart murmur Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Heart murmur pathophysiology On the Web |
|
American Roentgen Ray Society Images of Heart murmur pathophysiology |
|
Risk calculators and risk factors for Heart murmur pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Turbulent flow is responsible for most murmurs. Turbulent flow occurs when the velocity of blood flow becomes critically high because of a high volume of flow, the flow goes through an irregular or narrow area, the flow empties into a dilated vessel or chamber, or if the flow goes backward through an incompetent valve, septal defect, or patent ductus arteriosus. Frequently, a combination of these factors is operative. The sounds most commonly originate from the abnormal movement of blood across valves and between cardiac chambers. When this occurs, turbulence results, which produces vibrations in the chambers of the heart or outflow vessels that are detected as Murmurs.