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- ôøåô, àìéå ãé ñâðé
- îøëæ øôåàé ùéáà, úì äùåîø
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2
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- 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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14
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15
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16
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- 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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17
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18
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19
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- 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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20
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- Compensated
- High venous pressure
- Pulsus paradoxus
- Normal or high BP
- De-compensated
- High venous pressure
- Pulsus paradoxus
- Low BP
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21
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- 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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22
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- False positive:
- False negative: abolition of ventricular interdependance
- R /L not competitive: ASD
- Unequal diastolic pressure: AI, CHF
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23
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24
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- Pericardial tamponade
- Constrictive pericarditis
- Variant form of constrictive pericarditis
- Elastic form of constrictive pericarditis
- Effusive-constrictive
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25
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26
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27
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- End-diastole and early systole
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28
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- 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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29
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- Traditional criteria
- Dynamic respiratory changes
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30
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31
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32
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- Constriction
Restriction
- Impaired diastolic
filling
- Increased filling
pressure
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33
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- 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%
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34
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- 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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35
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- 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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36
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-
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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37
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- “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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38
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39
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40
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- 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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42
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43
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44
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- 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
- Respiratory pressure changes are transmitted to the heart
- The pericardium is normal
- The myocardium is abnormal
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45
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- 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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46
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47
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48
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49
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50
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51
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52
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- 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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53
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54
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55
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- 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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56
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- 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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57
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58
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- 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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59
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60
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61
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62
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- 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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63
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- “Any good pericardiologist has
sent to pericardiectomy at least once in his life a patient without constrictive
pericarditis”
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