Sindromi costrittive pericardiche Pericardite costrittiva Cardiomiopatia restrittiva Tamponamento cardiaco TAMPONAMENTO CARDIACO TAMPONAMENTO CARDIACO situazione acuta e grave Acute Tamponade Occurs due to rupture of the heart or aorta, trauma, or as a complication of catheter or pacemaker procedures Acute cardiac tamponade is generally sudden in onset, may be associated with chest pain and dyspnea, and is life-threatening if not promptly treated. The central venous pressure is typically markedly elevated, while hypotension is common due to the decline in cardiac output. The heart sounds are often muted. Subacute Tamponade Occurs due to neoplasm, uremia, or idiopathic pericarditis Patients may be asymptomatic or may complain of dyspnea, chest discomfort or fullness, peripheral edema, fatiguability, or other symptoms referable to increased filling pressures and limited cardiac output. The physical examination may reveal hypotension with a narrow pulse pressure, reflecting the limited stroke volume. However, patients with preexisting hypertension may remain hypertensive. Eziologia Neoplasia Pericardite idiopatica Uremia IMA Batteri TBC Radiazioni Mixedema Dissezione di AA Sindrome post pericardiotomica LES Cardiomiopatia FISIOPATOLOGIA DEL TAMPONAMENTO CARDIACO Tamponamento cardiaco Cardiac Tamponade Early stage mild to moderate elevation of central venous pressure Advanced stage intrapericardial pressure ventricular filling, volume hypotension impaired organ perfusion Cardiac Tamponade pathophysiology fluid accumulation within the pericardial space resulting in left to right heart interdependence increased intracardiac pressure progressive limitation of ventricular diastolic filling reduction of stroke volume and cardiac output Competition for room in the abnormally fixed pericardial space (chamber interaction) is by far the principal mechanism blood pooling in the lungs during inspiration Sintomi Dispnea Dolore toracico Tosse Disfagia Dolore addominale Singhiozzo Sazietà preoce Nausea Sintomi Critical tamponade is a form of cardiogenic shock, and the differential diagnosis may initially be elusive. Since most symptoms are nonspecific, tamponade must be suspected in many contexts — for example, in patients who have wounds of the chest or upper abdomen and hypotension or in those who have hypotension preceded by symptoms of an inciting pericardial disease, such as chest discomfort and pleuritic pain. Triade di Beck Descritta nel 1935 da Claude S. Beck Caratteristiche del tamponamento Ipotensione arteriosa sistemica Aumento della pressione venosa sistemica Toni ovattati Segni clinici Generali Ansietà Sudorazione algida Tachipnea Tachicardia Distensione venosa giugulare Cianosi periferica Segni clinici Ovattamento dei toni cardiaci Sfregamenti Polso paradosso First described by Kussmaul in 1873 as a palpable decrease or absence of the radial pulse during inspiration. Central Venous Pressure Kussmaul’s Sign venous return increases with inspiration and a high right atrial pressure resists filling resulting in an increased JVP SEGNO DI KUSSMAUL TAMPONAMENTO:POLSO PARADOSSO Place the patient in a position of comfort and conduct manometric studies during baseline respiration. Raise sphygmomanometer pressure until Korotkoff sounds disappear. Lower pressure slowly until first Korotkoff sounds are heard during early expiration with their disappearance during inspiration. Record this pressure. Very slowly lower pressure until Korotkoff sounds are heard throughout the respiratory cycle with even intensity. Record this pressure. The difference between the two recorded pressures is the Pulsus Pardoxus. Significant pulsus paradox is greater than or equal to 10% of the pressure at which all Korotkoff sounds are heard with even intensity. PALPATING PULSUS PARADOXUS Severe pulsus paradoxus can easily be palpated in the radial, brachial, or femoral pulses as a weakening or disappearance of the pulse during inspiration (which is best observed by watching or palpating the rise and fall of the chest) MEASURING PULSUS PARADOXUS An important clinical skill for following patient is the ability to estimate the severity of pulsus paradoxus: Using a sphygmomanometer in the standard fashion but deflate the cuff more slowly than usual During deflation, the first Korotkoff sounds are audible only during expiration, but with further deflation, Korotkoff sounds are heard throughout the respiratory cycle. The difference between the systolic pressures quantifies pulsus paradoxus Do not instruct the patient to breathe deeply during this evaluation. This can influences the severity of the pulsus SIGNIFICANCE OF PULSUS PARADOXUS IN TAMPONADE Pulsus paradoxus precedes severe hemodynamic deterioration When pulsus paradoxus is detectable in cardiac tamponade, the tamponade is at least moderate in severity Almost all patients with pulsus paradoxus from tamponade need to have pericardial fluid removed Pulsus Paradoxus tamponamento senza polso Difetto del setto interatriale Severa stenosi aortica Insufficienza aortica Disfunzione ventricolare sinistra polso senza tamponamento COPD Embolia polmonare Infarto del ventricolo destro Pericardite effusivocostrittiva Cardiomiopatia restrittiva Obesità severa Ascite tesa Diagnosi elettrocardiografica di tamponamento cardiaco ECG Finding Sensitivity Specificity Electrical Alternans 76 - 93 % 8 - 33 % Low Voltage P-R depression 99% 25% 86% 187 patients with echocardiographically diagnosed pericardial effusion. Eisenberg, M.J. et. al. Chest. 1996: 110, 318-24. 42% ECOCARDIOGRAFIA Segni ecocardiografici Versamento pericardico Collasso dell’atrio destro Collasso diastolico del ventricolo destro Swinging heart Variazioni respiratorie delle velocità di flusso valvolari mitralico e tricuspidalica Swinging of the Heart Two dimensional echocardiographic features of cardiac tamponade Moderate or large effusion RA / RV expiratory compression collapse IVC distention with diminished respiratory response Left atrial compression Reduced chamber size (especially the right ventricle) Reciprocal size changes with respiration between right and left ventricles Exaggerated and reciprocal respiratory variation of the mitral and tricuspid valve flow velocities ** Many of the right ventricular findings may be absent in the patient with elevated RV pressure (RVH, PA hypertension, volume expansion) RA and RV diastolic collapse RA / RV walls are thin and easily compressible when pericardial pressure is elevated . RA collapse RV collapse IVC dilatation Sens 55% 48% 97% Spec 88% 95% 66% PPV 10% 38% 7% NPV 99% 99% 99% absence of right atrial or ventricular collapse virtually excludes tamponade while their presence serves to suggest its potential presence or eventual development. 12/02 medslides.com 38 Evaluation of the inferior vena cava The central blood volume and the filling pressure of the RV can be estimated by measuring the size of the IVC and its response to respiration Normally, the vena caval diameter will be < 17 mm, and will decrease by > 5 mm during inspiration. The negative pressure exerted by thoracic inspiratory expansion is of a magnitude similar to the mean RA and RV diastolic pressure With central blood volume and right heart filling pressure, the IVC becomes dilated > 20 mm, and the ability of an inspiratory effort to collapse the vessel is lost Evaluation of the inferior vena cava The IVC is the single most reliable structure in terms of avoiding major diagnostic errors Majority of the time, tamponade will have evidence of IVC plethora Sens Spec PPV NPV IVC dilatation 97% 66% 7% 99% False positives include mechanically ventilated with positive end-expiratory pressure right heart failure pericardial constriction When to treat pericardial effusion ? cardiac tamponade is not an all-or-nonphenomena spectrum of abnormal hemodynamics limited data exist with respect to the optimal timing of intervention for pericardial effusion decision to Intervene requires careful consideration of the balance of risks and benefits to the patient Treatment Options Nonsurgical pericardiocentesis blind ECG guided Echo guided CT guided balloon pericardiotomy Surgical subxiphoid video-assisted thoracoscopy pericardial-peritoneal pericardial window pericardiectomy Pericardiocentesis Diagnostic tap usually not indicated rarely have positive cytology or infection that can be diagnosed Therapeutic drainage indicated for significant elevation of the central venous pressure Echo-guided Pericardiocentesis SAFE and EFFECTIVE locating the optimal site of puncture determining the depth of the pericardial effusion and the distance form the puncture site to the effusion monitoring the results of the pericardiocentesis Pericardial Window (surgical) Balloon dilatation of a needle pericardiostomy subxyphoid surgical pericardiostomy video-assisted thoracoscopy with localized pericardial resection anterolateral thoracotomy with parietal pericardial resection Pericardiocentesi PERICARDIOCENTESI Pericardite costrittiva Pericardite costrittiva An uncommon post inflammatory disorder Incarceramento del cuore in un pericardio rigido Caratterizzata da pericardio ispessito, fibrotico e frequentemente ispessito Raramente si sviluppa dopo un episodio di pericardite acuta more likely to develop after subacute pericarditis with effusion that evolve over several weeks Eziologia idiopathic infectious tuberculosis virus bacteria histoplasmosis drugs hydralazine cromolyn sodium procainamide penicillins isoniazid minoxidil phenylbutazone methysergide radiation chest trauma or surgery epicardial defibrillator patches connective tissue disease SLE, RA, dermatomyositis renal failure (on dialysis) myocardial infarction neoplasm sarcoidosis porphyria cutanea tarda asbestosis Whipple disease Cardiopatia indotta da radiazioni Many patients sustain both pericardial and myocardial injury (incidence 6% to 96%) Early pericarditis (first 6 months to several years): acute pericarditis with or without effusion incidence of effusive pericarditis is approx 20% -30% Chronic pericardiopathy is a common sequel, not necessarily preceded by acute pericarditis, comes in the form of effusive constrictive constrictive occult constrictive Diagnosi differenziale restrictive cardiomyopathy cardiac tamponade right ventricular failure mitral and tricuspid valve disease Segni clinici Jugular venous elevation JVP with inspiration (Kussmaul’s sign) Heart diastolic pericardial knock absent or decreased apical impulse Abdomen: ascites pulsatile hepatomegaly Extremities: peripheral edema Pulsus paradoxus 96% 30-70% 57% 70% almost always < 10 mm Hg; otherwise, considered tamponade Diagnosi insidious onset , often not recognized in its early phases by exam, x-ray, ECG, echo average duration of symptoms before diagnosis was 23.4 months ( range 1 to 264 months) tendency to overlook elevated JVP subacute chronic diastolic knock Kussmaul’s pulsus paradoxus + + < 10 mm Hg + ++ ++ + Test diagnostici Electrocardiogram Chest radiograph sinus tachycardia, atrial fibrillation, ST flattening, Twave inversion, low QRS voltage, right axis deviation / RVH pericardial calcification (44% to 70% in the past), must be distinguished from left ventricular aneurysm calcification MRI and computed tomography pericardial thickening over the right ventricle (sensitivity 88%, specificity 100%, diagnostic accuracy 93%) Segni ecocardiografici Pericardial thickening and adhesion: lack of "sliding"; heart motion transmitted to other organs ("tugging") Septal bounce: abrupt transient rightward movement IVC plethoric and unresponsive to respiration; hepatic veins dilated Left and right ventricular size decreased; heart tubular in shape Mild biatrial enlargement Segni ecocardiografici "halo sign” - separation of the entire pericardium by a small fixed space If the myocardium appears to pull the pericardium without altering the small echo-free separation of these layers, adhesion is suspected in the area examined best places to look for abnormal motion of the myocardium relative to the pericardium is anterior to the right ventricular outflow tract or at the lateral apex in the four chamber view Pericardiectomia decorticazione In hospital mortality vary between 0% and 10% predictors of poor outcome: underlying malignancy radiation-induced previous paracardial surgery NYHA class IV symptoms myocardial atrophy myocardial inflammation and scarring Effusive Constrictive Pericarditis coexistence of constrictive pericarditis and tamponading fluid MANIFESTAZIONI CLINICHE DELLA PERICARDITE COSTRITTIVA Cardiomiopatia restrittiva Risulta dall’infiltrazione patologica del miocardio da vari processi Amiloidosi/sarcoidosi Malattie da accumulo di glicogeno, emocromatosi, sindrome ipereosinofila Risulta in un anomalo riempimento ventricolare diastolico e disfunzione sistolica di vario grado Cardiomiopatia restrittiva Differentiation from constrictive pericarditis may be difficult because of similar clinical and hemodynamic presentations Clues from history, physical exam, ECG, echo, CT and MR scan Cardiomiopatia restrittiva amyloidosis is most likely to simulate constrictive pericarditis Digoxin should be avoided in patients with cardiac amyloidosis because of enhanced susceptibility to digoxin toxicity No therapy is known to be effective in reversing the progression of cardiac amyloidosis Cardiomiopatia restrittiva Echocardiography may reveal thickening of the myocardium and varying degrees of systolic ventricular dysfunction. Doppler echocardiographic analysis may demonstrate evidence of abnormal diastolic filling patterns and elevated venous pressure The ECG may show conduction system disease or low voltage, in contrast to the increased voltage seen with ventricular hypertrophy Segni ecocardiografici Absence of pericardial adhesion and thickening Left ventricular mass that is normal or increased; myocardial reflectance increased Moderate to severe biatrial enlargement Frequent AV valve regurgitation Signs of pulmonary hypertension AV valve excursion on M-mode unaffected by respiration Ruolo della biopsia endomiocardica RV endomyocardial biopsy may be diagnostic and should be considered in patients in whom a diagnosis is not established However, need for biopsy has been reduced with progress in noninvasive modalities: echocardiography, Doppler, MRI