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[Valve prostheses and transesophageal echocardiography]
N Espinola Zavaleta1, G de la Rosa, E Tamayo Rebolledo
1Departamento de Ecocardiografia, Instituto Nacional de Cardiología Ignacio Chávez, México, D.F.
Archivos Del Instituto De Cardiologia De Mexico
|January 1, 1995
Summary
Transesophageal echocardiography effectively detects prosthetic valve dysfunction. Nearly half of studied valves showed issues, including mechanical valve obstruction and bioprosthetic leaflet problems.
Area of Science:
- Cardiology
- Medical Imaging
Background:
- Prosthetic heart valves are crucial for patients with valvular heart disease.
- Assessing prosthetic valve function is vital for patient management.
- Transesophageal echocardiography (TEE) is a key imaging modality.
Purpose of the Study:
- To report the experience of the Echocardiography Department at the National Institute of Cardiology Ignacio Chávez.
- To evaluate the effectiveness of TEE in diagnosing prosthetic valve dysfunction.
- To analyze the types and causes of dysfunction in mechanical and bioprosthetic valves.
Main Methods:
- A retrospective study of 60 patients with 75 prosthetic valves (19 bioprosthetic, 56 mechanical).
- Valves were located in mitral, aortic, and tricuspid positions.
- Transesophageal echocardiography was performed using 5 MHz monoplane or biplane transducers.
Main Results:
- 52% of prosthetic valves functioned normally.
- 48% of prosthetic valves exhibited signs of dysfunction.
- Common dysfunctions included obstruction, pannus, endocarditis, and periprosthetic leaks for mechanical valves; leaflet rupture, stenosis, calcification, dehiscence, endocarditis, and leaks for bioprostheses.
Conclusions:
- The findings align with existing literature on prosthetic valve dysfunction.
- TEE is highly valuable for detecting and characterizing valvular prosthetic dysfunction.
- This experience highlights the importance of TEE in cardiology practice.