valvular heart disease in restrictive and infiltrative cardiomyopathies · 2020. 6. 17. ·...
TRANSCRIPT
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VALVULAR HEART DISEASE IN
RESTRICTIVE AND
INFILTRATIVE
CARDIOMYOPATHIES
Bruno Pinamonti
Trieste
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CARDIOMYOPATHY AND VALVULAR HEART
DISEASE: POSSIBILE LINKS
• CMP with secondary VHD >> “functional”
or organic
• Advanced organic VHD with secondary LV
remodelling/hypertrophy/dysfunction
• CMP and VHD >> incidental association of
2 unrelated diseases
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Classification of the cardiomyopathies: a position statement from the European
Society of Cardiology working group on myocardial and pericardial diseases
P Elliott et al. Eur Heart J 2008;29:270–276
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RESTRICTIVE CARDIOMYOPATHY
DEFINITION
• CMP characterized by a “restrictive filling” and by a reduced diastolic volume of one or both ventricles, with preserved systolic function and in absence of significant hypertrophy.
• Myocardial interstitial fibrosis: typical pathological finding
• Idiopathic forms or associated with other diseases (infiltrative CMP, like amiloidosis, endomyocardial fibrosis, hypereosinophilic Loeffler disease)
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Classification of the cardiomyopathies: a position statement from the European
Society of Cardiology working group on myocardial and pericardial diseases
P Elliott et al. Eur Heart J 2008;29:270–276
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RESTRICTIVE CMP
HAEMODYNAMIC FEATURES
• Major typical haemodynamic feature: diastolic “stiffness” ( steep of diastolic pressure/volume curve) of one or both ventricles, consequence of structural abnormalities of ventricular myocardium (fibrosis)
• “Dip-plateau” morphology of diastolic ventricular pressure curve (“square root sign”)
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RESTRICTIVE CMP
ECHO-DOPPLER FEATURES
• No pathognomonic signs (exclusion of other pathologies)
• LV non dilated, non hypertrophic, with preserved systolic function
• Significant dilation of atria and of vena cava
• RESTRICTIVE FILLING PATTERN at transmitral/transtricuspid Doppler curve
• Doppler signs of filling pressure
• “Functional” MR, TR
• Secondary pulmonary hypertension
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RCM
LVEDD: 58 mm, FS: 28%;IVS: 7 mm, PW: 6 mm
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RCM
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RCM
LVEDV: 108 ml; EF: 49%
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RCM: LV RFP
E: 0.6 m/s; A: 0.1 m/s; E/A: 6.0; EDT: 90 ms
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LOEFFLER HYPEREOSYNOPHILIC CMP–
ENDOMYOCARDIAL FIBROSIS:
DIAGNOSTIC FEATURES
• Clinical: HF, embolic episodes, SV arrhythmias
• Persistent hypereosinophilia (>1500 eos/mm3 for >6 months) without cause (IHS)
• Early stage: Eosinophilic infiltration of endomyocardium + necrosis, thrombosis (Loeffler disease)
• Late stage (EMF): Fibrotic thickening/obliteration of ventricular apex and basal ventricular endomyocardium (one or both ventricles), possible involvement of papillary muscles and M/T leaflets, with valvular dysfunction
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Loeffler Endomyocarditis/EMF
Stages of disease
• Acute necrotic stage (weeks): eosynophilic endomyocarditis
• Thrombotic stage (months): ventricular thrombi in damaged endocardium (apex or basal portion of one or both VV)
• Fibrotic stage (EMF)(years): RCM with apical obliteration, progressive scarring of endomyocardium, M and/or T valve involvement with MR/TR, often severe
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LOEFFLER CMP/EMF
ECHO-DOPPLER FINDINGS
• Thickening and hyperechogenicity of LV/RV
apex (obliteration) and/or basal segments
• Apical thrombi of LV/RV
• Preserved EF
• Severe diastolic dysfunction (“restrictive filling
pattern”) of LV and/or RV
• MR and/or TR due to entrapment of chordae
tendineae in the fibrotic process and
retraction of valve leaflets
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Five patterns of cardiac lesions:
Type 1: only apical obliteration
Type 2: lesion extending form apex
to AV valve
Type 3: AV Valvular lesions only
Type 4: Separate lesions in apex
and AV valvular tissue
Type 5: patches in areas other than
Apex and AV valves
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Examples of EMF CMP: Echo & MRI
Significant MR in EMF
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INFILTRATIVE/STORAGE CMP
• Infiltrative CMP >> intercellular infiltration
of myocardium by abnormal substances
(ex. Amyloidosis)
• Storage CMP >> intracellular
accumulation within myocardial cells by
various substances
• Genetically inherited and acquired
sporadic forms
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Systemic Amyloidosis – Clinical and Lab features
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Cardiac amyloidosis
Trieste Heart Muscle Disease Registry
Total (48) Group 1 (AL)
(29)
Group 2 (secondary)
(7)
Group 3 (unknown:
?ATTR) (12)
p
Left atrium area (cm2) 28±8 27±9 28±7 28±9 NS
Right atrium area (cm2) 23±7 24±8 21±5,8 26±10 NS
LVEDD (mm) 45±9 46±10 43±7 45±10 NS
LVESD (mm) 30±9 30±10 25±5 31±9 NS
IVS thickness (mm) 17±4 18±4 15±2 16±3 NS
PW thickness (mm) 15±3 15±4 13±1 15±3 NS
IVS thick >15 mm (%;n) 54(26) 59(17) 43(3) 50(6) NS
LVEDV (ml) 74±37 73±36 75±30 76±43 NS
LVESV (ml) 35±23 36±25 34±15 34±23 NS
LVEF (%) 55±13 55±15 56±8 56±11 NS
LVEF < 50% (%;n) 19(9) 24(7) 14(1) 8(1) NS
MV EDT <150 msec (%;n) 37(17) 24(7) 43(3) 64(7) 0,05
E/A wave ratio>2 on 34 pts (%;n) 38(13) 36(8) 40(2) 43(3) NS
LV restrictive filling pattern (%;n) 25(12) 17(5) 33(2) 42(5) NS
Mod-Sev MR (%;n) 10(5) 14(4) 0(0) 8(1) NS
Pericardial effusion (%;n) 40(19) 38(11) 29(2) 50(6) NS
Right ventricular hypertrophy (%;n) 33(16) 38(11) 14(1) 33(4) NS
Echocardiographic and Doppler data
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ANDERSON FABRY DISEASE
• Systemic disease with multiorgan involvement
due to genetic (recessive x linked) lysosomal
enzyme deficiency (alpha galactosidase) >
intracellular storage of glicosphyngolipids.
• Heart involvement: LV “pseudohypertrophy”,
valvular involvement
• Systemic manifestations: skin angiocheratoma,
diffuse pain, renal failure, ocular abnormalities,
cerebral TIA/stroke
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VHD in RCMP and Infiltrative CMP
CONCLUSIONS (I)
• RCMP and infiltrative/storage CMP are a
rare heterogeneous group of heart muscle
diseases with distinctive clinical and
cardiac imaging features
• VHD, particularly of M and T valves, is
possible, with different mechanisms
(functional or sometimes organic),
according to the disease subtype
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VHD in RCMP and Infiltrative CMP
CONCLUSIONS (II)
• Systematic accurate imaging evaluation of
affected valves is needed in order to
correctly assess the mechanism and
severity of valvular dysfunction
• TT Echo-Doppler evaluation is usually the
standard imaging approach. TEE, and/or
CMR are useful in selected patients
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VHD in RCMP and Infiltrative CMP
CONCLUSIONS (III)
• Multidisciplinary diagnostic and
therapeutic approach is important for
patient management considering the
frequent systemic multiorgan pathology
• Considering the rarity and the peculiarity
of these cardiac diseases, an international
multicentric registry could be advisable to
improve their knowledge and management