Valvular Disease, HF, Cardiomyopathies Flashcards
Cardiac Anatomy & Physiology
Heart: (4) room house
With (2)
- Right atrium
- Right ventricle
- Left atrium
- Left ventricle
- Electricity
- Plumbing
Concepts and Objectives
Important Concepts to Understand
- ___stole
- ___stole
- Myocardial o____ perfusion/consumption
- E_____ Fraction
Objectives
- Review normal cardiac an____ and phys____
- Understand normal valvular f_____
- Explore common valvular d_____
- Discuss diagnosis and m______ of valvular disease
- Differentiate heart failure with r_____ and pr______ ejection fraction
- Evaluate common management strategies for heart _____
- Define and differentiate 3 common cardio_______
Important Concepts to Understand
- Systole
- Diastole
- Myocardial oxygen perfusion/consumption
- Ejection Fraction
Objectives
- Review normal cardiac anatomy and physiology
- Understand normal valvular function
- Explore common valvular disease
- Discuss diagnosis and management of valvular disease
- Differentiate heart failure with reduced and preserved ejection fraction
- Evaluate common management strategies for heart failure
- Define and differentiate 3 common cardiomyopathies
Valvular Function
Valvular Basic Information
Purpose in Life =
- Essentials for proper function
- Properly formed and fl_____
- Opens all the way so blood can p____ through
- Closes tightly so no blood l______ backwards
- 4 valves
- Location: Located on each end of the 2 ventricles
- (3) valves with 3 cusps (tricuspid)
- (1) valve with 2 cusps (bicuspid)
Purpose in Life: Prevention of backward flow of blood
- Essentials for proper function
- Properly formed and flexible
- Opens all the way so blood can pass through
- Closes tightly so no blood leaks backwards
- 4 valves
- Location: Located on each end of the 2 ventricles
- 3 valves with 3 cusps (tricuspid)
- Tricuspid, Aortic, Pulmonic
- 1 valve with 2 cusps (bicuspid)
- Mitral
Tricuspid Valve
=
- Once right atrium f____, TV opens to allow __oxygenated blood to enter right ventricle.
- As pressure changes in the right atrium and right ventricle, TV _____.
- RV contracts>pumps deoxygenated blood through (1) valves into lungs
Forms the border between the right atrium and ventricle
- Once right atrium fills, TV opens to allow deoxygenated blood to enter right ventricle.
- As pressure changes in the right atrium and right ventricle, TV closes.
- RV contracts>pumps deoxygenated blood through PV into lungs
Mitral Valve
=
- Opens when LV relaxes (____) –which allows blood from LA to fill decom______ LV
- When LV contracts (_______), increase in pressure within ventricle causes the valve to ____
- Assures blood leaving the LV (s____ v_____) is ejected through (1) valve into aorta and to body
- Function is dependent on complex interplay between the ann____, leaf____, and ___valvular apparatus
2 cusps (bicuspid) between left atrium and left ventricle
- Opens when LV relaxes (diastole) –which allows blood from LA to fill decompressed LV
- When LV contracts (systole), increase in pressure within ventricle causes the valve to close
- Assures blood leaving the LV (stroke volume) is ejected through AV into aorta and to body
- Function is dependent on complex interplay between the annulus, leaflets, and subvalvular apparatus
Pulmonic Valve
=
- Opens to allow blood to be pumped from (1) to (1) (through pulmonary _____) > to get ______
- Prevents ____flow from pulmonary artery to RV
3 leaflet valve that separates the RV from the pulmonary artery
- Opens to allow blood to be pumped from RV to lungs (through pulmonary artery) >oxygenated
- Prevents backflow from pulmonary artery to RV
Compared to other valves really doesn’t like any pressure, just a conduit, likes to chill
Aortic Valve
=
- Separates (1) from (1)
- Opens to allow blood to leave LV into aorta and then ____
- Prevents ____flow of blood from aorta to LV
3 leaflet valve that separates the LV from the aorta
- Separates LV from aorta
- Opens to allow blood to leave LV into aorta and then body
- Prevents backflow of blood from aorta to LV
Tricuspid Valve Disease
(2)
Tricuspid Regurgitation
Tricuspid Stenosis
Tricuspid Regurgitation Primary Causes
What is the most common cause?
- Chest tr____
- ______ endocarditis
- Eb____ anomaly
- Car____ syndrome
- Myx______ degeneration
- C_________ tissue disorder
- Marantic endocarditis (l_____/rh_____ arthritis)
Rheumatic Disease*
- Chest trauma
- Infective endocarditis
- Ebstein anomaly
- Carcinoid syndrome
- Myxomatous degeneration
- Connective tissue disorder
- Marantic endocarditis (lupus/rheumatoid arthritis)
- IE and rheumatic are the biggest causes*
- IE from dental infection, big one right now is IVDU*
Tricuspid Regurgitation Secondary Causes
- ____ sided heart _____
- ______ stenosis/regurgitation
- P______ disease: PE, cor pulmonale, pulmonary HTN,
- Hyper_____
- S_____ of pulmonary artery or valve
- Left sided heart failure
- Mitral stenosis/regurgitation
- Pulmonary disease: PE, cor pulmonale, pulmonary HTN,
- Hyperthyroidism
- Stenosis of pulmonary artery or valve
uncontrolled hyperthyroidism is a serious cause, i have seen people need heart transplants from hyperthyroidism
Tricuspid Stenosis Causes
- ______ heart disease-almost always in conjunction with ____ stenosis
- Infective _____ (chronic)
- Car_____ syndrome
- Systemic ____ erythematosus
- Anti______ Antibody Syndrome
- Eb______anomaly
- F_____ Disease/Wh_____Disease
- Rheumatic heart disease-almost always in conjunction with mitral stenosis
- Infective endocarditis (chronic)
- Carcinoid syndrome
- Systemic lupus erythematosus
- Antiphospholipid Antibody Syndrome
- Ebstein’s anomaly
- Fabry Disease/Whipple Disease
Mitral Valve Disease
(2)
Mitral Regurgitation
Mitral Stenosis
Mitral Regurgitation Causes
Most common cause?
- Cardio_____
- MV pr_____
- Rh______ disease (Carey Coombs murmur)
- In______ end______
- Annular cal______
- Chordae tendineae r________
- Systemic _____ erythematosus- Libman-Sacks lesion
- T______ (Atrial myxoma)
Ischemic heart disease - CAD*
- Cardiomyopathy
- MV prolapse
- Rheumatic disease (Carey Coombs murmur)
- Infective endocarditis
- Annular calcification
- Chordae tendineae rupture
- Systemic lupus erythematosus- Libman-Sacks lesion
- Tumors (Atrial myxoma)
bc most commonly sees anterior wall MI’s which is the part that feeds the mitral valve/papillary muscles
Mitral Regurgitation Acute Causes
(1)
- Due to ischemia or MI may cause (1) dysfunction or rupture
- MI or severe prolonged ischemia can cause __reversible papillary muscle dysf____ and sc_____
- P_______ papillary muscle (supplied by PDA) is more vulnerable to ischemia than the anterolateral papillary muscle (supplied by both LAD and circumflex)
(1)
- Can involve abscess formation, vegetation, rupture of chordae tendineae, and leaflet perforation
(1)
- Due to trauma, mitral valve prolapse, endocarditis, or spontaneous rupture
CAD:
- Due to ischemia or MI may cause papillary muscle dysfunction or rupture
- MI or severe prolonged ischemia can cause irreversible papillary muscle dysfunction and scarring
- Posteromedial papillary muscle (supplied by PDA) is more vulnerable to ischemia than the anterolateral papillary muscle (supplied by both LAD and circumflex)
Infective endocarditis
- Can involve abscess formation, vegetation, rupture of chordae tendineae, and leaflet perforation
Chordae tendineae rupture
- Due to trauma, mitral valve prolapse, endocarditis, or spontaneous rupture
Mitral Stenosis
Most common cause?
- L_____
- F_____ Disease
- Wh_____ Disease
- Cong____
- Rheumatoid ar_____
- Mal_____ carcinoid disease
- Methy______ therapy
- H________ H_____ phenotype (mucopolysaccharidosis) - what is this?
Rheumatic Fever is the most common cause of mitral stenosis
- Lupus
- Fabry Disease
- Whipple Disease
- Congenital
- Rheumatoid arthritis
- Malignant carcinoid disease
- Methysergide therapy
- Hunter Hurler phenotype (mucopolysaccharidosis) -like people with diabetes develop stiffening of arteries and valves - think of like dropping sugary water on any surface it becomes stiff
Rheumatic Fever as the most common cause of Mitral Stenosis
- Stenosis of the MV usually occurs how long? following the episode of acute rheumatic myocarditis
- The acute insult leads to inflammatory f___ in the endocardium and myocardium; small v______ along the border of the valves can be seen
- Over time, the MV becomes th_____, cal_____, contracted commissural ad_____ occurs -> leads to stenosis
- Stenosis of the MV usually occurs decades following the episode of acute rheumatic myocarditis
- The acute insult leads to inflammatory foci in the endocardium and myocardium; small vegetations along the border of the valves can be seen
- Over time, the MV becomes thickened, calcified, contracted commissural adhesions occurs -> leads to stenosis
Mitral Stenosis Notes
- (1): the association of the atrial septal defect with rheumatic mitral stenosis
- As the valve orifice decreases, the pressure gradient across the MV __creases to maintain adequate flow
- Normal MV orifice area = _-_ cm2
- Once the valve area is __-__ cm2 or less, pts may start to have symptoms that include (1) or (1) with moderate exercise; this is due to the increased gr_____ across the valve and increased LA pr______
- Lutembacher Syndrome: the association of the atrial septal defect with rheumatic mitral stenosis (congenital defect - the hold in the heart is the cause of the rheumatic fever)
- As the valve orifice decreases, the pressure gradient across the MV increases to maintain adequate flow
- Normal MV orifice area = 4-6 cm2
- Once the valve area is 2-2.5 cm2 or less, pts may start to have symptoms that include exertional dyspnea or tachycardia with moderate exercise; this is due to the increased gradient across the valve and increased LA pressure
Mitral Stenosis Notes
- As the valve narrows progressively, the resting diastolic MV gradient and LA pressure increases -> leading to:
- Transudation of fluid into the ____ interstitium
- D_____ at rest or with minimal exertion
- Atrial _______ (LA dilatation increases this risk)
- Hemo____ (may occur if bronchial veins rupture)
- Pulmonary ____ develops due to:
- Retrograde transmission of left atrial pressure
- Pulmonary arteriolar constriction
- Interstitial edema
- Changes in the pulmonary vascular bed (intimal hyperplasia & medial hypertrophy)
- As the valve narrows progressively, the resting diastolic MV gradient and LA pressure increases -> leading to:
- Transudation of fluid into the lung interstitium
- Dyspnea at rest or with minimal exertion
- Atrial fibrillation (LA dilatation increases this risk)
- Hemoptysis (may occur if bronchial veins rupture)
- Pulmonary HTN develops due to:
- Retrograde transmission of left atrial pressure
- Pulmonary arteriolar constriction
- Interstitial edema
- Changes in the pulmonary vascular bed (intimal hyperplasia & medial hypertrophy)
Mitral Stenosis Notes
- As pulmonary arterial pressure increases, RV ______ and tricuspid ______ can occur → this leads to elevated J , l___ congestion, as____ and pe___ edema
- Left ventricular end-diastolic pressure and cardiac output are typically ______ in pts with isolated mitral stenosis
- As MS becomes more severe, cardiac output ____ below normal at rest and ____ to increase with exercise
- Severe mitral stenosis = mean pressure gradient >__; MV area < __cm2
- As pulmonary arterial pressure increases, RV dilation and tricuspid regurgitation can occur → this leads to elevated JVP, liver congestion, ascites and pedal edema
- Left ventricular end-diastolic pressure and cardiac output are typically normal in pts with isolated mitral stenosis
- As MS becomes more severe, cardiac output drops below normal at rest and fails to increase with exercise
- Severe mitral stenosis = mean pressure gradient >10; MV area < 1cm2
Pulmonic Valve Disease
(2)
Pulmonic Regurgitation
Pulmonic Stenosis
Pulmonic Regurgitation
Diagnosis is usually what?
Mild PR common in ______ - usually _____
- (2) are most common causes of iatrogenic PR and pathological PR overall
- Surgical treatment for RV outflow tract obstruction – (1) congenital heart defect
- (1) disease
- Infective (1)
- C_____ disease
- Pulmonary artery ____
Physiological PR and is often considered an incidental finding on echo (pretty common)
Mild PR common in adolescents-usually benign (usually bc of hormonal changes)
- Surgical valvulotomy and balloon valvuloplasty are most common causes of iatrogenic PR and pathological PR overall
- Surgical treatment for RV outflow tract obstruction – Tetralogy of Fallot
- Rheumatic heart disease
- Infective endocarditis
- Carcinoid disease
- Pulmonary artery HTN
Pulmonic Stenosis
Most associated with (1)-(2)
- Maternal r____ syndrome
- Rh_____ heart disease
- Previous CV s_____
- Cardiac t_____
Most associated with congenital structural cardiac syndromes
Tetralogy of Fallot & Noonan Syndrome
- Maternal rubella syndrome (not common anymore)
- Rheumatic heart disease
- Previous CV surgery
- Cardiac tumor
Aortic Valve Disease
(2)
Aortic Insufficiency (regurgitation)
Aortic Stenosis
Aortic Insufficiency (Regurgitation)
In acute AI, retrograde backflow of blood causes a quick rise in the LV end-______ volume.
Acute increase in preload and afterload do not allow time for the LV to acc_____ to the rapid volume increase during diastole
In acute AI, retrograde backflow of blood causes a quick rise in the LV end-diastolic volume.
Acute increase in preload and afterload do not allow time for the LV to acclimate to the rapid volume increase during diastole.
Aortic Insufficiency Causes
- Infective ______
- Traumatic/non-traumatic _______ of ascending aorta (aortic cusp prolapse)
- (1) processes:
- SLE, rheumatoid arthritis, ankylosing spondylitis, Reiter syndrome, Takayasu vasculitis, Marfan/Ehlers-Danlos syndromes, Behcet disease
- _______ AI causes:
- infective endocarditis, myxomatous valve degermation, bicuspid AV, AV calcification, aortic dissection, Whipple disease, Chrohn disease, systemic HTN
- T_____ Syndrome
- Infective endocarditis
- Traumatic/non-traumatic rupture of ascending aorta (aortic cusp prolapse)
- Rheumatologic processes:
- SLE, rheumatoid arthritis, ankylosing spondylitis, Reiter syndrome, Takayasu vasculitis, Marfan/Ehlers-Danlos syndromes, Behcet disease
- Chronic AI causes:
- infective endocarditis, myxomatous valve degermation, bicuspid AV, AV calcification, aortic dissection, Whipple disease, Chrohn disease, systemic HTN
- Turner Syndrome
Aortic Stenosis
Is it common?
Leads to left ventricular (1)
- LV obstruction caused by AS increases LV ____tolic pressure and LV ejection t____ , and LV end-_____tolic pressure.
- AS ___creases aortic pressure
- ___creased afterload/volume overload >LV dys_____/f______
- Myocardial oxygen consumption __creases with increased LV systolic pressure/LVET (ejection time)
Common
Leads to LVOT Obstruction
- LV obstruction caused by AS increases LV systolic pressure and LV ejection time , and LV end-diastolic pressure.
- AS decreases aortic pressure
- Increased afterload/volume overload >LV dysfunction/failure
- Myocardial oxygen consumption increases with increased LV systolic pressure/LVET
Aortic Stenosis Causes
- ______ (bicuspid/unicuspid) leaflet deformities
- ___cuspid disease most common cause for pts < 70
- Cal_____
- Rh______ disease (most common cause in developing countries)
- S _ _
- R_____ of chest
- Homozygous Type II L______emia
- F_____ Disease
- ________ cardiomyopathy (subvalvular stenosis)
- Congenital (bicuspid/unicuspid) leaflet deformities
- Bicuspid disease most common cause for pts < 70
- Calcification
- Rheumatic disease (most common cause in developing countries)
- SLE
- Radiation of chest
- Homozygous Type II Lipoproteinemia
- Fabry Disease
- Hypertrophic cardiomyopathy (subvalvular stenosis)
What murmur does this describe?
Holosystolic, the larger the defect, the quieter the murmur.
Ventral Septal Defect
What murmur does this describe?
Mid-systolic, crescendo-decrescendo in character radiating towards the neck. Quieter with Valsalva or standing.
Aortic Stenosis (AS)
What murmur does this describe?
Early systolic murmur with a mid-systolic click heard best at the cardiac apex
Mitral valve prolapse (MVP)
What murmur does this describe?
Mid-systolic, crescendo-decrescendo murmur that increases in intensity during inspiration. In severe PS, the S2 heart sound is widely-split.
Pulmonic Stenosis (PS)
What murmur does this describe?
Holosystolic, heard best at the lower left sternal border with radiation to the right lower sternal border. TR, compared to MR, increases on inspiration.
Tricuspid regurgitation (TR)
What murmur does this describe?
Mid-systolic, also radiates and is heard best at the left sternal border and is important to distinguish from MR. The murmur is louder with Valsalva and standing
Hypertrophic Cardiomyopathy (HCM)
What murmur does this describe?
Mid-systolic, S2 heart sound is fixed-split and does not change with inspiration
Atrial septal defect (ASD)
Tricuspid Regurgitation Diagnostics
Patient will present with clinical signs of what type of heart failure?
-
Echo
- right atrium = (1)
- right ventricle = (1)
- right ventricle function = (1), ____dynamic, or r_______
-
CXR
- (1) heart size with severe TR
- As____/Pleural ______
-
Labs
- MAY see abnormal (1) function, hyper______ 2/2 to hepatic congestion
Right sided heart failure
-
Echo
- right atrium = dilated
- right ventricle = dilated
- right ventricle function = normal, hyperdynamic, or reduced
-
CXR
- Cardiomegaly heart size with severe TR
- Ascites/Pleural effusion
-
Labs
- MAY see abnormal liver function, hyperbilirubinemia 2/2 to hepatic congestion
Tricuspid Regurgitation Physical Exam
- As_____
- J_____ v____ distension
- S__ gallop (extremely _____ RV)
- ___systolic murmur
- J_____
- Atrial _______
- Peripheral e_____
- Cach______
- Ascites
- Jugular vein distension
- S3 gallop (extremely dilated RV)
- Pansystolic murmur
- Jaundice
- Atrial fibrillation
- Peripheral edema
- Cachexia
Tricuspid Regurgitation Medical Tx
➢D______
➢Anti_______
➢A____
➢Anti________*
➢Diuretics
➢Antiarrhythmics
➢ARBs
➢Anticoagulants*
Tricuspid Regurgitation Surgical Tx
For Severe TR
➢ _______ tricuspid valve replacement rare
➢Usually, will do (1)
Severe TR
➢ Isolated tricuspid valve replacement rare
➢Usually, will do along with left sided valve repair/replacement
Tricuspid Stenosis Physical Exam
Murmur: ____ frequency, ___-systolic, mid-diastolic murmur: best heard at (1)
- Lungs are _____ in isolated TS
- Reduced ex______ capacity (exertional s_____ as TS worsens), fa___, leg e____, as____, hepatic c_____, anasarca, and other signs of RV failure
Murmur: low frequency pre-systolic, mid-diastolic murmur: best heard at lower left sternal border 4th intercostal space
- Lungs are clear in isolated TS
- Reduced exertional capacity (exertional syncope as TS worsens), fatigue, leg edema, ascites, hepatic congestion, anasarca, and other signs of RV failure
Tricuspid Stenosis Diagnostics
- ECG = Tall, peaked __ waves in (3) leads (if pt is in sinus rhythm)
- Echo = will show _______
- Cardiac MRI = vs echo?
- ECG = Tall, peaked p waves in II, III, and aVF (if pt is in sinus rhythm)
- Echo = will show stenosis
- Cardiac MRI = preferred over echo to evaluate RV
Tricuspid Stenosis Medical Tx
➢ (1)* (prevent/limit systemic and hepatic congestion in severe symptomatic TS). ***Caution***
➢Invasive intervention in every case?
➢ Appropriate treatment of ______ causes most helpful (i.e. SLE)
➢Loop diuretics (prevent/limit systemic and hepatic congestion in severe symptomatic TS). ***Caution***
➢Not every case needs invasive intervention
➢ Appropriate treatment of underlying causes most helpful (i.e. SLE)
Tricuspid Stenosis Surgical Tx
(1) 1, 2, or 3 balloons used
(1) preferred over (1)
- If repair cannot be done, o____ is preferred over trans______
- No difference between bioprosthetic vs mechanical except with car____ syndrome
- Best done in conjunction with ____ sided valve surgery
Valvotomy 1, 2, or 3 balloons used
Repair preferred over Replacement
- If repair cannot be done, open is preferred over transcatheter
- No difference between bioprosthetic vs mechanical except with carcinoid syndrome
- Best done in conjunction with left sided valve surgery
Mitral Regurgitation Diagnosis
Crucial to think broadly when creating differential diagnoses
Can determine if MR is acute or chronic if we initially have focused H/P> helps narrow possible etiologies
- Significant _______ at rest, exacerbated in _____ position
- C____, with clear or p___, fr____ sputum
- May have (1) r_____ to neck, jaw, shoulders, etc. (sxs associated with myocardial ischemia)
- Tachycardia OR bradycardia (if i______ involvement of con____ system)
- _____pnea, hy_____, cy_____, ____tension
- J_ , diffuse cr_____ in lungs,
- Apical holosystolic murmur with radiation to axilla
- Significant dyspnea at rest, exacerbated in supine position
- Cough, with clear or pink, frothy sputum
- May have chest pain radiating to neck, jaw, shoulders, etc. (sxs associated with myocardial ischemia)
- Tachycardia OR bradycardia (if ischemic involvement of conduction system)
- Tachypnea, hypoxemia, cyanosis, hypotension
- JVD, diffuse crackles in lungs,
- Apical holosystolic murmur with radiation to axilla
Acute Mitral Regurgitation
Typically related to (1) from ACS or fulminant destruction of valvular apparatus 2/2 to acute bacterial endocarditis
Typically related to papillary muscle rupture from ACS or fulminant destruction of valvular apparatus 2/2 to acute bacterial endocarditis
Chronic Mitral Regurgitation
- May remain asymptomatic until late in course
- F____, d____ on exertion, o____pnea, p_____ nocturnal dyspnea, weight ____, pulse pressure begins to ______, apical ____systolic murmur with radiation to _____, dependent e____, J _ _
- ______ cases: cyanosis, syncope/near syncope, digit clubbing, hepatomegaly, ascites with fluid wave, pleural and/or pericardial effusions
- May remain asymptomatic until late in course
- Fatigue, dyspnea on exertion, orthopnea, paroxysmal nocturnal dyspnea, weight gain, pulse pressure begins to widen, apical holosystolic murmur with radiation to axilla, dependent edema, JVD
- Advanced cases: cyanosis, syncope/near syncope, digit clubbing, hepatomegaly, ascites with fluid wave, pleural and/or pericardial effusions
Mitral Regurgitation Diagnostics
- (1): primary and essential diagnostic test
- CXR: With chronic MR, cardio______ 2/2 to left atrial and/or right sided heart enlargement
- ECG: (1) is most common ECG finding in pts with MR
- Cardiac MRI: Helps assess _____ of MR, also helps with RV and LV s___/fun____
- Echo: primary and essential diagnostic test
- CXR: With chronic MR, cardiomegaly 2/2 to left atrial and/or right sided heart enlargement
- ECG: Atrial fibrillation is most common ECG finding in pts with MR
- Cardiac MRI: Helps assess severity of MR, also helps with RV and LV size/function
Mitral Regurgitation Medical Tx
➢___/___
➢ (1): not useful in primary MR but have been shown to help in secondary MR
➢ (1)
➢ACE/ARB
➢ Beta blockers: not useful in primary MR but have been shown to help in secondary MR
➢Loop diuretics
Mitral Regurgitation Surgical Tx
➢(1) preferred over (1)when possible except when there is extensive tissue destruction or infective endocarditis
➢(1) valve preferred over (1)
Repair preferred over replacement when possible except when there is extensive tissue destruction or infective endocarditis
➢Mechanical preferred over bioprosthetic