systolic murmur

systolic murmur

n.

A murmur heard during ventricular systole.

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systolic murmur,

a cardiac murmur occurring during systole. Systolic murmurs include ejection murmurs, often heard in pregnant women or in people with anemia, thyrotoxicosis, or aortic or pulmonary stenosis; pansystolic murmurs, heard in people with incompetence of the mitral or tricuspid valve; and late systolic murmurs, also caused by mitral valve incompetence and, less commonly, by tricuspid regurgitation.

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murmur

an auscultatory sound, particularly a periodic sound of short duration of cardiac or vascular origin.

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anemic murmur

see blood murmur (below).

aortic murmur

a sound indicative of disease of the aortic valve.

apex murmur

one heard over the apex of the heart.

arterial murmur

one in an artery, sometimes aneurysmal and sometimes constricted.

blood murmur

one due to an abnormal, commonly anemic, condition of the blood. Called also anemic murmur.

cardiac murmur

see heart murmur (below).

cardiopulmonary murmur

one produced by the impact of the heart against the lung.

continuous murmur

a humming murmur heard throughout systole and diastole.

crescendo murmur

one marked by progressively increasing loudness.

crescendo-decrescendo murmur

one with increasing intensity until mid- to late systole, then a decreasing intensity, giving a diamond-shaped tracing on phonocardiography. Characteristic of pulmonary stenosis.

decrescendo murmur

one with an intensity that gradually decreases. Heard during diastole in aortic or pulmonary valvular insufficiency.

diamond-shaped murmur

refers to the phonocardiographic tracing of a crescendo-decrescendo murmur.

diastolic murmur

one at diastole, due to mitral obstruction or to aortic or pulmonary regurgitation.

ejection murmur

systolic murmur heard predominantly in mid-systole, when ejection volume and velocity of blood flow are at their maximum.

friction murmur

friction rub.

functional murmur

a cardiac murmur occurring in the absence of structural changes in the heart.

heart murmur

any adventitious sound heard over the region of the heart. It may indicate a leaking or stenotic valve, a congenital patency between the right and left sides of the heart, or be a functional murmur which does not indicate cardiac disease. These occur in young foals, some of them disappear before maturity.

hemic murmur

see blood murmur (above).

innocent murmur

one caused by increased velocity of blood rather than a cardiac lesion.

machinery murmur, machinery-like murmur

a long, rumbling sound occupying most of systole and diastole. Characteristic of patent ductus arteriosus and arteriovenous fistulas.

mitral murmur

one due to disease of the mitral valve.

musical murmur

a cardiac murmur having a periodic harmonic pattern.

organic murmur

one due to structural change in the heart.

pansystolic murmur

one heard throughout systole.

prediastolic murmur

one occurring just before and with diastole, due to mitral obstruction or to aortic or pulmonary regurgitation.

presystolic murmur

one occurring shortly before the onset of ventricular ejection, usually associated with a narrowed atrioventricular valve.

pulmonary murmur

one due to disease of the valves of the pulmonary artery.

radiating heart murmur

one which is heard over a wider area or over another area. The systolic murmur of subaortic stenosis radiates up the aortic arch and carotid arteries. It can be heard over the right, as well as left, heart base and occasionally over the head.

regurgitant murmur

one due to a dilated valvular orifice, with consequent regurgitation of blood through the valve.

seagull murmur

a raucous murmur resembling the call of a seagull, frequently heard in aortic insufficiency.

systolic murmur

one occurring at systole, usually due to mitral or tricuspid regurgitation, or to aortic or pulmonary obstruction.

tricuspid murmur

one caused by disease of the tricuspid valve.

vascular murmur

one heard over a blood vessel.

vesicular murmur

the normal breath sounds heard over the lungs.