1 Assessment of Mitral Aortic Regurgitation At Bed

1 Assessment of Mitral & Aortic Regurgitation At Bed Side , Echo Lab & Cath Lab Dr. Dayasagar Rao. V DM Cardiology FRCP (Canada) FRCP (Edinburgh) KIMS Hospital – Hyderabad Telangana

2 Valvular Regurgitation Quantification – severity Regurgitant -Volume(ml/beat) -Fraction (RV/SV%) Regurgitant volume - Regurgitant orifice area (EROA) - pressure gradient (between chambers) - SVR –HR - Compliance (Receiving chamber) - LV function

3 Valvular Regurgitation Regurgitant: - Severity - Re Volume - Re Fraction Consequences: - LV dilatation - LV function - LA dilatation

4 Valvular regurgitation Native valve: - Primary : Chronic Acute on chronic Secondary : Prosthetic valve

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13 PARAMETERS Symptoms/ History Physical signs: -JVP -Pulse -BP Chamber enlargement Cardiac murmurs Dynamic auscultation

14 PHYSICAL SIGNS Influenced by : - Heart rate - Blood pressure - Cardiac output - Heart failure Volume & volume of Blood flow – Cardiac murmurs Low output – Alters the murmurs (intensity & duration)

15 SYMPTOMS - Filling pressures: (LA/RA) - Cardiac output : Low output Extent of disability: Self care Activity : 3 Mets Household Activity Leisure Activity Sport Activity : 10 Mets More symptomatic - More severe lesion Discrepancy - Symptoms & Severity - Co- Morbidities : Anemia Infections Thyroid Etc.

16 COMPLICATIONS - Cardiomegaly - CHF / Ventricular Dysfunction - PAH - Atrial Fibrillation/Dysrhythmias Related – Severity & Duration of valvular Disease

17 MITRAL REGURGITATION Cardiomegaly / LV apex / PH Wide splitting II, Early closure of A 2 S 3 + Auscultatory findings – severity MR & valve morphology PSM – Grade IV Conducted Axilla & Interscapular region MDM

18 Murmur is harsh (instead of soft blowing) indicating low & medium frequency. usually indicates lot of flow & thus significant regurgitation Variable correlation between intensity of MR murmur & severity of regurgitation. Loud murmur associated with thrill (grade IV / greater) Specificity : 91% Severe MR Sensitivity : 24%

19 Aortic Regurgitation Pulse pressure >60 mm Hg Systolic HTN Diastolic BP low Hills Sign : (? ) Paradoxical split II sound in absence of LBBB indicates large LV stroke volume which indicates severe AR. Soft S 1 elevated LV edp which is consequence of severe AR & LV Dysfunction.

20 EDM : Length of murmur Location : LSE/RSE Intensity : poor correlation Harsh Quality Austin Flint II sound: Root disease : loud Valve disease: Soft / Absent Cardiomegaly – Apex Hyperdynamic S 3 is a sign of LV Dysfunction (not of severity of AR)

21 CLINICAL ASSESSMENT OF VALVULAR HEART DISEASE Symptom evaluation : severity Complications – AF, PH, CHF Cardiomegaly – chamber enlargement Sounds : S 1&S 2 S 4/S 3 Cardiac murmurs: - length of murmur - Intensity - Conduction

22 ECHO Doppler evaluation-Regurgitation- valvular M-mode – temporal resolution 2 DE: TTE Multiple views TOE Pulse Doppler/CW Doppler -Flows/VTI Colour Doppler - Qualitative jet parameters - Quantitative - Vena Contracta - PISA(for EROA) Tissue Doppler - for LV function Stress Echo : - Physical - Pharmacologic RT 3 DE

23 ECHO Doppler: valvular regurgitation Anatomy : Valve Size of LV Aorta Function: Complications:

24 ECHO-Doppler Grading Severity MR Primary Qualitative Length 1/2 Length LA Area <4 cm 2 - >10 cm 2 Area/LA area <20% - > 40% VC width (mm) <3 >7 mm VTI: Mitral/Aorta <1 >1. 4 A>E E>1. 5 cm/sec Systolic Dominance Systolic flow reversal EROA (mm 2) <20 >40 Reg Volume <30 >60 MR Jet Semi Quantitative Mitral Flow Pulm Vein Flow Quantitative LA/LV Size/PA pressure European Association Imaging - 2013

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27 Mitral Regurgitation Index Six parameters : Jet length PISA Jet Density Pulm venous flow pattern PA pressure (RVSP) LA Size Each Parameter Grade: 0 -3/6 MR index: <1. 6 >2. 1

28 2 DE – Doppler Quantification: AR Colour flow imaging : - jet area: presence , Qualitative assessment - Central jet : rheumatic - eccentric jet : prolapse perforation Jet width : Normalizing with LVOT Diameter >65% - severe AR

29 ECHO Doppler: AR - summary Colour doppler : Jet : -LVOT (presence) -vena contracta (quantification) -PISA : EROA regurg volume Adjunctive parameters: -Diastolic flow reversal – aorta -PHT < 200 msec

30 ECHO Doppler Grading Severity AR Qualitative Colour flow jet Diastolic Flow reversal (Desc Thor Aorta) Abd Aorta Width Length Pan diastolic Semi Quantitative VC (width) <3 mm >6 mm PHT (msec) >500 <200 EROA (mm 2) <10 >30 Reg Volume (ml) <30 Quantitative LV Size/Function >60

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32 Cath lab – Evaluation -Severity regurgitation Cardiac cath - Symptomatic patient Non invasive tests – inconclusive Discrepancy Non invasive test & physical exam (Severity of lesion) -Asymptomatic Exercise testing - confirm absence of symptoms - Assess Hemodynamic response to exercise - prognosis ACC/AHA Guidelines – 2014 Management of patients Valvular heart Disease

33 Angiographic Assessment of Severity by Left Ventriculography LA opacification Time required Clearance of LA opacification Comparison with opacification of LV 1+ (Mild) Partial (Never complete) ----- Single beat Less 2+ (Moderate) Faint complete Several beats Less 3+ (moderately severe) Complete Several beats Same 4+ (severe) Complete Single beat Several beats More dense with each beat Reflux of contrast in pulmonary veins

34 Valvular Regurgitation Severity Assessment Clinical : Physical exam ECG Cx. R-PA 2 DEcho + Doppler Qualitative Quantitative Cath lab : Data Obsolete for many

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