adult echocardiography lesson nine valvular heart disease harry h. holdorf phd, mpa, rdms, rvt, lrt,...
TRANSCRIPT
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ADULT ECHOCARDIOGRAPHYLesson Nine
Valvular Heart DiseaseHarry H. Holdorf PhD, MPA, RDMS, RVT, LRT, N.P.
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Aortic Regurgitation
• Etiology– Primary cusp disease
(stenosis, endocarditis, ankylosing spondylitis)
– Dilated aortic annulus and root (Marfan, aortitis, HTN, aneurysm)
– Los of commissural support (trauma, aortic dissection, membranous VSD)
– Prosthetic valve dysfunction
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Aortic dissection & Flap in descending AO
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• NOTES:– Which anomaly goes with
aortic dissection?• Marfan Syndrome
– If you have a uniformly dilated aortic root, which term best describes this?• Fusiform
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Sinus of Valsalva Aneurysm
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• Pathophysiology– Left ventricular volume
overload leads to LV dilatation– Decreased ejection fraction
with long standing regurgitation– Increased risk of endocarditis
• Physical Signs• Bounding (bifid (bisferious)
atrial pulse• High-pitched diastolic
“blowing” murmur left sternal border (LSB)
• Symptoms of CHF, DOE, angina, and or syncope.
• Wide pulse pressure (big difference between systolic and diastolic numbers during BP readings.
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• NOTES– Which is the most
common chamber for a sinus of Valsalva aneurysm to rupture into?• Right atrium
– What kind of murmur would you hear in a patient with a rupture of a sinus of Valsalva aneurysm?• Continuous
– Know diastolic “blow” (the classic aortic regurgitation murmur)
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Ao Regurg
Echo– M-mode may show
diastolic fluttering of the mitral valve leaflets (mostly anterior) or interventricular septum
– Mitral valve “pre-closure” with severe acute AR
– Diastolic fluttering or lack of closure of he aortic leaflets
– Decreased excursion of the anterior MV leaflet
– LV dilatation with increased LV mass
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• Aortic valve or root abnormalities may be present
• Pre-systolic opening of the aortic leaflets
• LV contractility may be hyper or hypo-dynamic (acute vs. chronic)
• TEE best for diagnosing aortic dissections
• Chronic AR patients should have serial echoes to follow changes in diastolic and systolic size.
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M-mode of Diastolic MV Fluttering
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M-mode of Premature MV closure
• NOTE: What causes MV pre-closure?– An elevated LVEDP
The line in the QRS: MV pre-closure should be in the middle.
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Normal MV closure is in the middle to the end of the QRS complex
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• Doppler– Diastolic turbulence in the
LVOT– Diastolic flow reversal in
the descending Ao (Mod to Sev AR)
– Obtain the end diastolic gradient from CW Doppler to estimate the LVEDP (diastolic BP – end diastolic gradient
– Map the regurgitant area with pulsed or color flow Doppler
– Try to determine the regurgitant area in LAX and SAX to estimate severity
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• NOTE: Know Color Doppler M-Mode of aortic insufficiency
• JH/LVOT (ratio)– Mild = <25%– Mod = 25-65%– Sev = >65%– JH (Jet height)
– Ao P ½ time• Mild = > 500 msec• Mod = 500-200 msec• Sev = <200 msec
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Ao P ½ time
• Homework: show images demonstrating aortic pressure half-time
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• B is more severe because Ao & LV pressures are equal at end diastole.
• LVEDP = diastolic BP – end diastolic gradient– Ex. Patient w/ BP of
120/50 and end diastolic velocity of 2 m/sec
– LVEDP = 50-16 (converting the 2 m/sec using 4V2
= 34 mmHg
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AI diastolic flow reversal –Descending Ao
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• NOTE:– Know descending aorta
diastolic flow reversal (also called retrograde)
– Antegrade = normal flow direction
– Retrograde = flow in opposite direction
NOTE: Mild aortic regurgitation has an incomplete spectral trace
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Moderate Ao regurgitation incomplete spectral trace
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Pulmonary Regurgitation
• NOTE: Flick your bick– Candle flame is normal
regurgitation
EtiologyPrimary valve disease (stenosis, endocarditis)Pulmonary hypertensionCarcinoid heart diseaseTrivial/mild regurgitation is common.
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• PATHOPHYSIOLOGY– RV volume overload may lead
to RV dilatation.– Severe regurgitation may cause
right heart failure– Evan moderate regurgitation
will be well tolerated for years– Increased risk for endocarditis
• Physical signs– Low-pitched diastolic murmur
(LSB) may increase with inspiration
– With pulmonary hypertension a high-pitched blowing diastolic murmur (Graham-Steele) may be heard (LSB)
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• ECHO– RV dilatation with
displacement of LV septum posteriorly.
– Tricuspid valve fluttering is rare
• Doppler– Diastolic turbulence in the
RVOT– Map the regurgitant area
with pulsed or color flow Doppler
– Severe PI spectral trace is NOT holodiastolic
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Severe PI
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Calculating PA End Diastolic Pressure
• NOTE:– How would you calculate
pulmonary artery end diastolic pressure?• Pulmonic insufficiency
velocity– Know how to calculate
PAEDP when given a Right Atrial Pressure (RAP) of 10 mmHg and from the PI spectral trace an End Diastolic velocity (EDV) of 1.5 m/sec.
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• PAEDP– RAP + EDP (end diastolic
pressure) converted from the DEV
10 +4 (1.5) sq.10 +4 (2.25)10 +9 = 19 mmHg
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Tricuspid Regurgitation
• Etiology– Primary valve
abnormalities (rheumatic, prolapse, endocarditis, carcinoid)
– Elevated pulmonary pressure
– Annular dilatation/calcification
– Congenital valve abnormalities (Ebstein’s)
– Prosthetic valve dysfunction
– Trivial/mild TR is common
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• Pathophysiology– Right atrial volume overload
lends to right atrial dilatation– Increased risk for endocarditis
• Physical signs– Holosystolic murmur which
increases with inspiration may be present
– Jugular venous distension– Symptoms of right heart failure
• Echo– Valvular abnormalities may be
seen– Right atrial dilatation– RV dilatation with displacement
of LV septum posteriorly– Dilatation of IVC– Contrast: systolic appearance
of bubbles in IVC
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Dilated RV & IVC
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Carcinoid Heart Disease-Fixed leaflets
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• NOTE:– What is the most common
valvular abnormality associated with carcinoid syndrome?• Tricuspid regurgitation
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NEXT: PROSTHETIC VALVES
End lesson Nine