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1
îçìåú äôøé÷øã
äéáèéí äîåãéðîééí åùéìåá MDCT
å-MRI áàáçðä
  • ôøåô, àìéå ãé ñâðé
  • îøëæ øôåàé ùéáà, úì äùåîø
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îçìåú äôøé÷øã
  • ôøé÷øãéèéñ ÷åðñèøé÷èéáéú
  • äöâú äëììéí äîåãéðîé÷ä CT MRI
  • î÷øéí áòéúééí


  • èîôåðãä ùì äìá


  • î÷øä áòéúé
  • äâãøú áòéåú..åôéúøåï?


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âá' úí ñåáìú î÷åöø ðùéîä
tam-ponade?
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âá' úí ñåáìú î÷åöø ðùéîä
tam-ponade?
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Tam…
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Tam…
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Tam…
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Tam…
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Right atrial and intrapericardial pressure
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Right atrial and intrapericardial pressure after pericardiocentesis
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Echocardiographic Tam-ponade
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Pericardial tamponade, a problem of definition
  • Accumulation of pericardial fluid causing:
    • Compression of the heart
    • Impaired ventricular diastolic filling
    • Reduction of stroke volume and cardiac output

  • Hemodynamic tamponade
  • Clinical tamponade
  • Echocardiographic tamponade


  • An all or none phenomenon or hemodynamic spectrum?


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Pericardial pressure-volume curve and cardiac tamponade
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Spectrum of hemodynamic changes in cardiac tamponade
Reddy PS et al. Am J Cardiol 1990;66:1487-91
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Clinical tamponade:
Acute tamponade
  • Iatrogenic
    • Catheterization diagnostic and therapeutic: 9.6% of all pericardiocentesis
    • Pacemaker
  • Trauma


  • Dissecting aneurysm
  • Beck`s triad:
    • Increased venous pressure
    • Hypotension
    • A quiet heart


  • Tachycardia
  • Tachypnea
  • Stupor-agitation
  • Orthopnea
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Clinical tamponade:
subacute and chronic cases
  • Compensated
    • High venous pressure
    • Pulsus paradoxus
    • Normal or high BP
  • De-compensated
    • High venous pressure
    • Pulsus paradoxus
    • Low BP

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Elevated arterial blood pressure in cardiac tamponade
Brown J et al N Engl J Med 1992;327:463-6
  • 18 consecutive patients with cardiac tamponade
  • All with equal right atrial and pericardial pressure
  • In 6 patients with an history of hypertension BP ranged from 150/100 to 210/130
  • After pericardial tap BP decreased from 176/113 to 139/83 and CO increased
  • In 12 patients with normal or low BP, pericardial tap increased BP and CO
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Pulsus paradoxus
 and related Doppler signs
  • False positive:
    • COPD
    • Pulmonary embolism
  • False negative: abolition of ventricular interdependance
    • R /L not competitive: ASD
    • Unequal diastolic pressure: AI, CHF



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 Riva-Rocci sphygmomanometer:
an endangered species
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Compressive pericardial syndromes
  • Pericardial tamponade
  • Constrictive pericarditis
  • Variant form of constrictive pericarditis
    • Elastic form of constrictive pericarditis
    • Effusive-constrictive
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Cardiac tamponade/constrictive pericarditis:
the common mechanism - LA pressure curve
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Cardiac tamponade/constrictive pericarditis:
the difference - RA pressure curve
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Right atrial diastolic collapse
Atrio-ventricular inerdependence
  • End-diastole and early systole
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îçìåú äôøé÷øã
  • ôøé÷øãéèéñ ÷åðñèøé÷èéáéú
  • äöâú äëììéí äîåãéðîé÷ä CT MRI
  • î÷øéí áòéúééí


  • èîôåðãä ùì äìá


  • î÷øä áòéúé
  • äâãøú áòéåú..åôéúøåï?


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Constrictive pericarditis
hemodynamics
  • Traditional criteria
  • Dynamic respiratory changes
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Constrictive pericarditis
traditional criteria
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Kussmaul’s sign
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Constrictive and restrictive heart disease
  • Constriction                   Restriction
  •                 Impaired diastolic filling
  •                 Increased filling pressure
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The changing profile of constrictive pericarditis
  • Tuberculosis is rare in developed countries
  • Up to 1/3 of the cases are post cardiac surgery or radiation
  • Many acute or subacute cases
  • Variant form of constrictive pericarditis:
    • Effusive-constrictive pericarditis
    • Transient constrictive pericarditis
    • Localised constrictive pericarditis
  • Pericardial calcification dropped from > 50% to 20-30%
    • Hancock WE Heart 2006
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 The changing profile of restrictive cardiomyopathy
  • Amyloid
  • Other infiltrative diseases
  • Endomyocardial fibrosis
  • Idiopathic restrictive cardiomyopathy


  • Diastolic dysfunction
    • Elderly patients
    • Hypertension
    • Increased arterial stiffness
    • Hancock WE Heart 2006

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Constrictive pericarditis vs restrictive CMP: traditional criteria
  • PREDICTIVE ACCURACY (% pts correctly classified by the test)


  • Criteria    PPV-CP     Restr. CMP                  Overall PV
  • Pr. Equalization 92        70 85
  • RVD/RVS > 1/3 95       32 76
  • RVSP > 50 90       24 70
  • All 3 criteria 91       94


  • CP: 82 pts Restrictive CMP: 37 pts
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Constrictive pericarditis vs restrictive CMP: traditional signs
  •     Criteria Sensitivity Specificity PPV NPV


  • Pr. Equalization 60        38             4 57
  • RVD/RVS >1/3 93        38             52 89
  • PAP <55 93        24              47 25
  • Lack of RAP change 93                48 58 92


  • CP: 15 pts Restrictive CMP: 21 pts
  • Hurrel et al. Circulation 1996
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Constrictive pericarditis vs restrictive CMP: dynamic respiratory changes
  • “Characteristic changes were seen with respiration that suggest that differentiation of these disease states may also be possible from hemodynamic data”
  •     Differentiation of constrictive pericarditis and restrictive cardiomyopathy by Doppler echocardiography. Hatle LK et al. Circulation1988


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            Constrictive pericarditis
Dissociation of intrathoracic and intracardiac pressures.
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 Constrictive pericarditis
Out of phase pressure changes: Ventricular interdependence
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Restrictive cardiomyopathy:
in phase right and left ventricular changes
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Constrictive pericarditis vs restrictive CMP:  Dynamic respiratory changes
  •         Criteria  Sensitivity Specificity PPV   NPV
  • PCWP/LV                  93                81              78      94
  • LV/RV interdep.       100              95               94     100


  • CP:   15 pts Restrictive CMP: 21 pts
  • Hurrel et al. Circulation 1996
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Constrictive pericarditis
imaging
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Constricive pericarditis
echo-Doppler
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Constrictive pericarditis vs. restrictive cardiomyopathy: pathophysiologic and morphologic features
  • Constrictive pericarditis
    • Compression of the whole heart
    • The heart is isolated from the influence of respiratory pressure changes


    • The pericardium is thickened and/or calcified
    • The myocardium is normal
  • Restrictive cardiomyopathy
    • Mainly LV involvement


  • Respiratory pressure changes are transmitted to the heart


    •  The pericardium is normal
    • The myocardium is abnormal
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From hemodynamics to pericardial imaging- MDCT and  MRI
CT and MR Imaging of Pericardial Disease. Zhen J. Wang et al. RadioGraphics 2003
  • CT and MRI are not limited by the acoustic window as echocardiography
  • Excellent soft tissue contrast
  • Accurate thickness measurement
  • Complete pericardial visualization
  • Heart chamber morphology
  • Specific myocardial patterns in restrictive cardiomyopathy
  • Mediastinal and lung imaging
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 Pericardial imaging with MDCT
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MRI
Normal pericardium      PE with normal pericardium
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MRI-Constrictive Pericarditis SSFP 4 chamber view
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MRI-Constrictive Pericarditis SSFP 4 chamber view
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MRI-Constrictive Pericarditis SSFP short axis oblique
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MRI-Constrictive Pericarditis SSFP short axis oblique
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Septal bounce at cine MRI
  •     Real-Time Cine MRI of Ventricular Septal Motion: A Novel Approach to Assess Ventricular Coupling. M. Francone et al, JOURNAL OF MAGNETIC RESONANCE IMAGING 2005
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Septal bounce at MRI: two mechanisms
A. Standard cine : breath hold, multiple beats SSFP
C. Real time cine imaging: respiration
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MRI in restrictive cardiomyopaty
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MDCT and MRI for constrictive pericarditis vs restrictive cardiomyopathy                    CT and MR Imaging of Pericardial Disease. Zhen J. Wang et al. RadioGraphics 2003
  • MDCT/MRI
    • Normal pericardium < 2 mm. A thickening>4 mm has 93% accuracy for differentiation between CP and restrictive CMP
    • RV: relative low volume, normal EF, tubular configuration.
    • IVC enlarged, hepatomegaly, ascites
  • MDCT better
    • Pericardial calcification
  • MRI better
    • Abnormal septal motion
    • Myocardial tissue characterization
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Constrictive versus restrictive disease: is cardiac catheterization still necessary?                          Pros
  • Atrial fibrillation 20 to 50% in constrictive pericarditis:
    • Temporary pacing for analysis of  phasic respiratory changes
  • Coronary disease in CP: median age
  • 1936-1982 1985-1995
  • 45 61
  • Mayo Clinic data, Ling et al. Circulation 1999
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Constrictive versus restrictive disease: is cardiac catheterization still necessary?
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73 old male with shortness of breath had open heart surgery (AVR) 2004
  • Catheterization 2004
  • RA 11
  • RV 35/11
  • PCW 12
  • Borderline ventricular interdependence
  • Echo 2004
  • Normal mitral flow
  • No septal bounce
  • Catheterization 2007
  • RA19
  • RV 47/24
  • PCW 23
  • Deep and plateau


  • Echo 2004
  • Normal mitral flow
  • No septal bounce


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73 old male with shortness of breath had open heart surgery (AVR) 2004
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73 old male with shortness of breath had open heart surgery (AVR) 2004
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73 old male with shortness of breath had open heart surgery (AVR) 2004
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Constrictive versus restrictive disease: is cardiac catheterization replaced by MRI?
Constrictive Pericarditis in 26 Patients With Histologically Normal Pericardial Thickness.
Deepak R. Talreja et al. Circulation. 2003
  • The pericardium was of normal (<2 mm) in 26 patients (18%; group 1) and was thickened (>2 mm) in 117(82%; group 2)
    •  Causes of constriction in group 1 included previous cardiac surgery, chest irradiation, infarction, and idiopathic disease.
  • “When clinical, echocardiographic, or invasive hemodynamic features indicate constriction pericardiectomy should not be denied on the basis of normal thickness by noninvasive imaging”
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Constrictive pericarditis versus restrictive cardiomyopathy


  •    “Any good pericardiologist has sent to pericardiectomy at least once in his life  a patient without constrictive pericarditis”