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Valvular Heart Disease

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physiology

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Spectrum of VHD Aortic Valve Mitral Valve Tricuspid Valve Pulmonic Valve

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Cardiac Anatomy

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Spectrum of VHD RegurgAcute Aortic ValveChronic StenosisAcute Chronic RegurgAcute Mitral ValveChronic StenosisAcute Chronic RegurgAcute Tricuspid ValveChronic StenosisAcute Chronic RegurgAcute Pulmonic ValveChronic StenosisAcute Chronic

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Cardiac Physiology 101 SystoleAV/PV opens S1-S2MV/TV closes S1-S2MV/TV closes DiastoleAV/PV closes S2-S1MV/TV opens S2-S1MV/TV opens

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Cardiac Physiology 101 Regurg/ Insuff leaking (backflow) of blood across a closed valve Stenosis Obstruction of (forward) flow across an opened valve

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Severity of Valvular Diseases According to Echocardiography Severity of stenotic valve diseases The evaluation should combine the estimation of valve area and flow-dependent indices AS is severe if valve area is < 1.0 cm or < 0.6 cm/m Severe AS is unlikely if mean gradient is < 50 mmHg with normal cardiac output MS is significant if valve area is < 1.5 cm, preferably using planimetry

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Valvular Heart Disease Aortic Valve Aortic StenosisAortic Stenosis Aortic RegurgitationAortic Regurgitation

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Aortic Valve Regurgitation

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Aortic Regurgitation Etiologies Abnormalities of the Leaflets Rheumatic, Bicuspid, Degenerative Endocarditis Dilation of the Aortic Annulus Aortic Aneurysm / Dissection Inflammatory (Syphyllis, Giant Cell Arteritis. Coll Vasc Dis-Ankylosis Spondylitis, Reiters) Inheritable (Marfans, Osteogensis Imperfecta)

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Aortic Regurg pathophysiology

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Aortic Regurgitation

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Physical Exam Diastolic Decrescendo Blowing Murmur Hyperdynamic LV apical impulse Bounding Pulses S4, S3 Gallop-advanced AI Apical Rumble Austin Flint Murmur

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Aortic Regurg Austin Flint Murmur Due to the vibration of the anterior leaflet of the mitral valve as it is buffetted simultaneously by the blood jets from the left atrium and the aorta.

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Aortic Regurgitation Diagnosis Ecg LAE, LVH Echo 2D/color doppler test of choice Cardiac Cath helpful, confirmatory, needed if the pt is older look at the coronaries

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Aortic Regurgitation Treatment of Asymptomatic Aortic Regurg Medical Therapy treats the symptoms not the cause Serial Check ups with Echos (EF, Severity AR)Serial Check ups with Echos (EF, Severity AR) SBE ProphylaxisSBE Prophylaxis Vasodialators (Nifedipine, ACE-I)Vasodialators (Nifedipine, ACE-I) DiureticsDiuretics Treatment of Symptomatic Aortic Regurg Aortic Valve Replacement Bioprosthetic vs Mechanical AVR

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Aortic Valve Repair

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Aortic Stenosis

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Aortic Valve Stenosis

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Aortic Stenosis Etiologies Congenital0-30 yrs Bicuspid30-50 yrs Rheumatic30-60 yrs Degenerative>60 yrs

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Aortic Stenosis

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Bicuspid Aortic Valve

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Aortic Stenosis pathophysiology

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Aortic Stenosis Physical Exam Harsh Systolic Ejection Murmur late peaking S4 gallop (from LVH) Sustained Bifid LV impulse (from LVH) Pulsus Parvus et Tardus (Carotid Impulse)

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Aortic Stenosis Symptoms Angina Syncope Congestive Heart Failure (CHF)

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Aortic Stenosis

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Diagnosis Ecg LAE, LVH Echo 2D/color doppler test of choice Cardiac Cath helpful, confirmatory, needed if the pt is older look at the coronaries

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Aortic Stenosis Treatment of Symptomatic Aortic Stenosis or Decreased LV Function Medical Therapy treats the symptoms not the cause Aortic Valve Replacement Bioprosthetic vs Mechanical AVR

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Spectrum of VHD Right Sided VHD Tricuspid Valve Tricuspid ValveEndocarditis IV drug abusers or inpt with IVs IV drug abusers or inpt with IVs Carcinoid HD - classically TS TR common, benign, may be secondary to Pulm HTN Pulm HTN Pulmonic Valve Pediatrics Pulm Stenosis Rheumatic HD PI (Graham Steel Murmur) Right sided valvular lesions change in intensity with inspiration

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Mitral Valve

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Valvular Heart Disease Mitral Valve Mitral RegurgitationMitral Regurgitation Mitral StenosisMitral Stenosis

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Mitral Regurgitation Etiologies Alterations of the Leaflets, Commissures, Annulus Rheumatic MVP Endocarditis Alterations of LV or LA size and Function Papillary Muscle (Ischemic, MI, Myocarditis, DCM) HOCM LV Enlargement Cardiomyopathies - LA Enlargement from MR MR begets MR

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Mitral Regurg pathophysiology

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Mitral Regurgitation Symptoms Fatigue and weakness Dyspnea and orthopnea Right sided HF MVP Syndrome (if present)

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Mitral Regurgitation Physical Exam Holosystolic Apical Blowing Murmur Laterally displaced apical impulse Split S2 (but is obscured by the murmur) S3 Gallop (increased volume during diastole) Radiation depends on the etiology

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Mitral Regurgitation Diagnosis Ecg LAE, LVH Echo 2D/color doppler test of choice Cardiac Cath helpful, confirmatory, needed if the pt is older look at the coronaries

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Mitral Regurgitation - SBE Prophylaxis

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Mitral Regurgitation

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Mitral Valve Prolapse

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Mitral Regurgitation MVP Pathophysiology

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Mitral Regurgitation -MVP

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Diagnosis and Treatment Echo 2D/Color B-Blockers (hyperadrenergic symptoms, Palpitations) Aspirin (TIAs without etiology) SBE Prophylaxis (only if associated with MR) Severe Symptomatic MR same as chronic MR

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Valvular Heart Disease Mitral Valve Mitral RegurgitationMitral Regurgitation Mitral StenosisMitral Stenosis

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Mitral Valve Stenosis

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Mitral Stenosis Etiologies Rheumatic almost all cases in adults Mitral Annular Ca+ - massive (rare) Congenital rare 60% of pts dont have a history of ARC 50% of pts who have ARC dont develop VHD

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Mitral Stenosis

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Physical Exam Loud S1 Opening Snap Diastolic Apical Rumble (murmur) May be associated with: MR or AS Right Sided Murmurs oPI Graham Steel Murmur oTR

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Mitral Stenosis Diagnosis Ecg A Fib, LAE, RAE, RVH Echo 2D/color doppler test of choice Cardiac Cath helpful, confirmatory, needed if the pt is older look at the coronaries

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Mitral Stenosis Treatment of Symptomatic Mitral Stenosis Medical Therapy treats the symptoms not the cause Diuretics for congestion Digoxin, Beta and Ca Channel Blockers for Afib rate control Anticoagulation for AFib and LA clots SBE Prophylaxix prevent endocarditis

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Mitral Stenosis Treatment of Symptomatic Mitral Stenosis Surgical Therapy treats the cause Percutaneous Ballon Valvulaoplasty Non-calcified, pliable valve

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Mitral Stenosis Treatment of Symptomatic Mitral Stenosis Surgical Therapy treats the cause Open Commisurotomy valve repair Mitral Valve Replacement

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