murmers Flashcards
Aids: Usually decreasing or disappears on sitting
Innocent Murmurs
result from turbulent blood flow, probably generated by ventricular ejection of blood into the aorta from the left and occasionally the right ventricle.
Innocent Murmur
Very Common in children and young adults-may also be heard in older people. There is not lying cardiovascular disease
innocent murmurs
similar to innocent murmurs, possible signs of a likely cause, turbulence due to a temporary increase in blood flow in predisposing conditions such as anemia, pregnancy, fever, and hyperthyroidism
Physiologic Murmurs
the most common kind of heart murmur
midsystolic click
three types of midsystolic clicks
innocent - without detectable physiologic or structural abnormality
midsystolic murmurs tend to peak _____ and usually stop _______
near mid-systole, usually stop before S2
Aids: heard best with the patient sitting and leaning forward
Aortic Stenosis
A2 decreases as this worsens. A2 may be delayed and merge with P2 _ single S1 on expiration or paradocixcal S2 split. Carotid upstroke may be delayed with slow rise and small amplitued. Hypertrophied left ventricle may _ sustained apical impulse and an S4 from decreased compliance
…
Aids: Decreases with squatting, increases with straining down from Valsava and standing
Hypertrophic Cardiomyopathy
associated with unusually rapid ejection of blood from the left ventricle during systole. Outflow tract obstruction of flow may coexist. Accompanying distortion of the mitral valve may cause mitral reguritation
massive ventricular hypertrophy
Quality: often harsh
Pulmonic Stenosis
In severe pulmonic stenosis ____ is widely split, and ____ is diminished or inaudible. An early pulmonic ejection sound is common. May hear a right sided ____. Right ventricular impulse often increased in amplitude and sustained
S2, P2, S4
______ impairs flow across the valve, increasing right ventricular afterload. Congenital and normally found in children.
Pulmonic valve stenosis
In an ______, the systolic murmur from pathologically increased flow across the pulmonic valve may mimic pulmonic stenosis
atrial septal defect
Diastolic Murmurs, two types
Aortic regurgitation and mitral stenosis
Aids: The murmur is heard best with the patient sitting, leaning forward, with breath held after exhalation
Aortic Regurgitation
An ejection sound may be present. An S3 or S4, if present, suggusts sever regurgitation
Aortic reguritation
Progressive changes in the apical impulse for Aortic Regurgitation include:
increased amplitude, displacement laterally and downward, widened diameter, and increased duration
For Aortic Regurgitation, the pulse pressure ______ and the arterial pulses are ______. A midsystolic flow murmur or an Austin Flint murmur suggests large regurgitant flow
Increases,
(Diastolic / Systolic) murmurs almost always indicate heart disease.
Diastolic
_______ murmurs signify regurgitant flow through an incompetent semilunar valve, more commonly, the aortic
Early descresendo diastolic
____ mumurs in mid or late _____ suggest stenosis of an AV valve, usually the mitral
Rumbling diastolic, diastolic
Mechanism of aortic reguritation
The leaflets of the aortic valve fail to close completely during diastole, and blood reguritates from the aorta back into the left ventricle. Volume overload on the left ventricle resules.