Q: A low density of mechanical mitral valve mass on echocardiogram favors? (select one)
Echodensity can be described in two ways:
1. Qualitatively -
- low intensity: similar to myocardial echodensity
- high-intensity: similar to the prosthetic hardware echodensity
2. Quantitatively -
It is described as using the ratio of the intensity of mass/intensity of prosthesis. A low-intensity mass of ≤0.45 suggests a presumptive diagnosis of thrombus.
1. Barbetseas J, Nagueh SF, Pitsavos C, et al. Differentiating thrombus from pannus formation in obstructed mechanical prosthetic valves: an evaluation of clinical, transthoracic and transesophageal echocardiographic parameters. J Am Coll Cardiol 1998; 32:1410.
2. Lin SS, Tiong IY, Asher CR, et al. Prediction of thrombus-related mechanical prosthetic valve dysfunction using transesophageal echocardiography. Am J Cardiol 2000; 86:1097.