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Application of the ultrasonic technique for the pathophysiological analysis of the pericardial disease
Insights
Echocardiography reveals heart motion changes in pericardial effusion and constrictive pericarditis. Jugular vein flow patterns offer diagnostic insights into cardiac tamponade severity and constrictive pericarditis.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- Pericardial diseases like effusion and constrictive pericarditis present diagnostic challenges.
- Echocardiography is a key imaging modality for evaluating pericardial conditions.
- Understanding specific echocardiographic findings aids in diagnosis and management.
Purpose of the Study:
- To characterize echocardiographic findings in large pericardial effusion and constrictive pericarditis.
- To investigate the utility of real-time cross-sectional scanning in detecting pericardial adhesions.
- To correlate cardiac motion, electrical alternans, and jugular vein flow patterns with disease severity.
Main Methods:
- Echocardiography, including real-time cross-sectional scanning.
- Analysis of cardiac motion patterns (revolving motion, alternans).
- Assessment of jugular vein inflow velocity and flow patterns.
Main Results:
- Revolving heart motion observed in large pericardial effusion, with adhesions interfering.
- Real-time scanning effective for detecting localized pericardial adhesions.
- Cardiac position alternans and electrical alternans seen with excessive motion and tachycardia.
- Echograms suggesting pericardial thickening in half of constrictive pericarditis cases.
- Jugular vein inflow velocity decreased in cardiac tamponade; inspiratory increase noted in mild cases.
- Constrictive pericarditis characterized by jugular vein reverse flow and decelerating diastolic inflow.
Conclusions:
- Echocardiography provides valuable insights into the mechanics of pericardial effusion and constrictive pericarditis.
- Real-time imaging aids in identifying pericardial adhesions.
- Jugular vein Doppler patterns are useful in differentiating cardiac tamponade severity and diagnosing constrictive pericarditis.
Abstract:
(1) In large pericardial effusion, echography showed a revolving motion of the heart. This characteristic motion was interfered by the pericardial adhesion. Real time cross-sectional scanning was useful for detecting the adhesion, especially the localized one. When excessive cardiac motion coexisted with tachycardia, alternation of the heart position accompanied by electrical alternans was observed. Based on the results, the mechanisms for the alternation of the heart position was discussed. (2) Echogram suggesting the pericardial thickening was found in about a half of patients with constrictive pericarditis. Another findings, which may reflect the anatomical and functional changes in constrictive pericarditis, were also presented. Although each of them is not pathognomonic, concurrence of them may suggest the presence of constrictive pericarditis. (3) Inflow velocity in jugular vein was markedly decreased in cardiac tamponade. The inspiratory increase in the inflow velocity was observed in mild cardiac tamponade, but not in severe one. Flow velocity pattern of jugular vein in constrictive pericarditis was characterized by the appearance of the reverse flow being coexistent with rapidly decelerating inflow in diastole.