Download MBBS (Bachelor of Medicine and Bachelor of Surgery) Diastolic Murmurs PowerPoint PPT presentation
? Murmurs which occur during any part of
diastole are known as diastolic murmurs.
? Due to accelerated or turbulent flow across
the mitral or tricuspid valves.
? Low pitched noises that are often difficult to
hear& should be evaluated with bell of
stethescope.
EARLY DIASTOLIC MURMUR
? Confined to early diastole which begins with
S2
? Causes- aortic & pulmonary regurgitation
features
AR
PR
site
Right 2nd intercostal Left 2nd intercostal
space
space
Accentuation with
On expiration
On inspiration
respiration
MID DIASTOLIC MURMURS
? Begins at a clear interval after S2 &ends
before S1.
? Causes ? mitral stenosis (located at apex &
axilla),Tricuspid stenosis(left sternal edge),
increased flow across the
mitral valve tricuspid valve
MR ,AR,VSD,PDA TR, ASD
CONTINOUS MURMURS
? One that begins in systole & extends through
S2 into part or whole of the diastole.
? Rare in adults.
Causes
High to low
Due to rapid blood Normal flow
pressure shunts
flow through
through consticted
normal vessels
arteries
PDA
Cervical venous hum
Coarctation of aorta
Tricuspid atresia
Mammary souffle
Carotid stenosis
Pulmonary atresia
Hemangioma
Pulmonary artery
Coronary
Hyperthyroidism
stenosis
arteriovenous fistula
Renal artery stenosis
Arteriovenous fistula
Coeliac artery stenosis
(systemic &
pulmonary)
This post was last modified on 12 August 2021