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Intro to Valvular Disease

Intro to Valvular Disease. Mitral Valve. Valvular Heart Disease. Heart contains Two atrioventricular valves Mitral Tricuspid Two semilunar valves Aortic Pulmonic . Valvular Heart Disease. Types of valvular heart disease depend on Valve or valves affected

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Intro to Valvular Disease

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  1. Intro to Valvular Disease Mitral Valve

  2. Valvular Heart Disease • Heart contains • Two atrioventricular valves • Mitral • Tricuspid • Two semilunar valves • Aortic • Pulmonic

  3. Valvular Heart Disease • Types of valvular heart disease depend on • Valve or valves affected • Two types of functional alterations • Stenosis • Regurgitation

  4. Valvular Heart Disease • Valvular disorders occur in children and adolescents primarily from congenital conditions and in adults from degenerative heart disease

  5. Valvular Heart Disease HeartPoint: Valvular Heart Disease http://www.heartcenteronline.com/myheartdr/common/articles.cfm?ARTID=187 Flashcards about Ch 19 NETI KQ- on your own

  6. Risk Factors • Rheumatic Heart Disease MI • Congenital Heart Defects • Aging • CHF

  7. Valvular surgery Heart Surgery Innovations - Google Video 11:22 valves 20 beating heart 20 aortic valve

  8. Pathophysiology • Stenosis- narrowed valve, increases afterload • Regurgitation or insufficiency- increases preload. The heart has to pump same blood • **Blood volume and pressures are reduced in front of the affected valve and increased behind the affected valve. • This results in heart failure • All valvular diseases have a characteristic murmur murmurs

  9. Mitral Valve Stenosis

  10. Fig. 37-9 Fish mouth

  11. Mitral Stenosis • Dec. flow into LV • LA hypertrophy • Pulmonary pressures increase • Pulmonary hypertension • Dec. CO • * early symptom is DOE • Later get symptoms of R heart failure • A fib is common- anticoagulants • Usually secondary to rheumatic fever

  12. Mitral Regurgitation • Regurg of blood into LA during systole • LA dilation and hypertrophy • Pulmonary congestion • RV failure • LV dilation and hypertrophy-to accommodate inc. preload and dec CO

  13. Mitral Regurgitation

  14. MitraClip Repair MitraClip 3D Animation

  15. Mitral Valve Prolapse • A type of mitral insufficiency • Usually asymptomatic- click murmur • May get atypical chest pain related to fatigue • Tachydysrhythmias may develop • Risk for endocarditis may be increased

  16. Mitral Valve Prolapse Fig. 37-10

  17. Mitral Valve Prolapse • Usually benign, but serious complications can occur • Mitral valve regurgitation • Infective endocarditis • Sudden death • Cerebral ischemia

  18. Mitral Valve Prolapse • Clinical manifestations • Most patients asymptomatic for life • Murmur from insufficiency that gets more intense through systole • Late or holosystolic murmur • Clicks mid to late systole that may be constant or vary beat to beat

  19. Mitral Valve Prolapse • Dysrhythmias • Paroxysmal supraventricular tachycardia • Ventricular tachycardia • Palpitations • Lightheadedness • Dizziness

  20. Mitral Valve Prolapse • May or may not be present with chest pain • If pain occurs, episodes tend to occur in clusters, especially during stress • Pain may be accompanied by dyspnea, palpitations, and syncope • Does not respond to antianginal treatment

  21. A&P 1 Heart part 1 Midsytolic click & late systolic murmur

  22. MVP video Infections & Injuries of the Heart- on own Live Search Videos: mitral valve prolapse

  23. Aortic Stenosis Aortic Stenosis Minimally Invasive Aortic Heart Valve Replacement

  24. Aortic Stenosis

  25. Aortic Stenosis • Increase in afterload • Reduced CO • LV hypertrophy • Incomplete emptying of LA • Pulmonary congestion • RV strain

  26. Symptoms • Syncope • Angina • Dyspnea • This triad reflects left ventricular failure

  27. Aortic Stenosis • May be asymptomatic for many years due to compensation • DOE, angina, and exertional syncope are classic symptoms • Later get signs of R heart failure • Untreated-poor prognosis- 10-20%sudden cardiac death

  28. Aortic Valve Stenosis • Poor prognosis when experiencing symptoms and valve obstruction is not relieved • Nitroglycerin is contraindicated because it reduces preload

  29. New Approach- Percutaneous AVR

  30. Aortic Regurgitation

  31. Aortic Regurgitation • Get increased preoad- 60% of SV can be regurgitated • Characteristic water hammer pulse • Regurgitation of blood into the LV • LV dilation and hypertrophy • Dec. CO Echocardiography

  32. Aortic Valve Regurgitation • Clinical manifestations • Sudden manifestations of cardiovascular collapse • Left ventricle exposed to aortic pressure during diastole • Weakness

  33. Aortic Valve Regurgitation • Severe dyspnea • Chest pain • Hypotension • Constitutes a medical emergency

  34. Water Hammer pulse Pulse, water hammer: A jerky pulse that is full and then collapses because of aortic insufficiency (when blood ejected into the aorta regurgitates back through the aortic valve into the left ventricle ). Also called a Corrigan pulse or a cannonball, collapsing, pistol-shot, or trip-hammer pulse. Austin Flint

  35. Tricuspid and Pulmonic Valve Disorders Result in R side heart failure

  36. Diagnostic Tests • Echo- assess valve motion and chamber size • CXR • EKG • Cardiac cath- get pressures

  37. Collaborative Care • Drug therapy • Digitalis • Diuretics • Antidysrhythmics • -Blockers • Anticoagulants

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