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Heart murmurs are unique heart sounds produced when blood flows across a heart valve or blood vessel. [1] ... Symptoms tend to present between 40 and 70 years of age.
Symptoms of a serious or worrisome heart murmur depend on the cause and require evaluation by a healthcare professional. These heart murmur symptoms may include: —Blue or gray lips or fingernails
Phonocardiograms of common murmurs. A phonocardiogram (or PCG) is a plot of high-fidelity recording of the sounds and murmurs made by the heart with the help of the machine called the phonocardiograph; thus, phonocardiography is the recording of all the sounds made by the heart during a cardiac cycle. [2] [3]
The Levine scaling system persists as the gold standard for grading heart murmur intensity. It provides accuracy, consistency, and interrater agreement which are essential for diagnostic purposes, particularly to distinguish innocent from pathological murmurs. Louder murmurs (grade ≥3) are more likely believed to represent cardiac defects ...
Heart murmurs are sounds generated by blood flowing through the structures of the heart. The location of the Still's murmur on examination suggests resonation of blood in the left ventricular outflow tract and aorta, and this is supported by studies that have shown that the murmur is more intense over the aortic valve than the pulmonary valve. [4]
The maneuver can sometimes be used to diagnose heart abnormalities, especially when used in conjunction with an echocardiogram. [15] For example, the Valsalva maneuver (phase II) increases the intensity of hypertrophic cardiomyopathy murmurs, namely those of dynamic subvalvular left ventricular outflow obstruction.
Though several different cardiac conditions can cause heart murmurs, the murmurs can change markedly with the severity of the cardiac disease. An astute physician can sometimes diagnose cardiac conditions with some accuracy based largely on the murmur, related physical examination , and experience with the relative frequency of different heart ...
A doctor usually discovers a heart murmur when listening to the heart via a stethoscope. Not all heart murmurs sound the same, and the severity of the sound doesn't necessarily correlate to the ...
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