Study of normal and abnormal movements of mitral valve ring using reflected ultrasound.
نویسندگان
چکیده
منابع مشابه
Study with reflected ultrasound of patients with mitral valve repair.
As part of a follow-up investigation in mitral annuloplasty by reflected ultrasound, 39 studies have been carried out in I5 patients who underwent mitral valve reconstructive operations. The rate of diastolic toward closure movemeiit from point E (EF speed) and total amplitude did not correlate with the final valve orifice dimension obtained at operation. Mitral stenosis and incompetence were s...
متن کاملReflected ultrasound in the assessment of mitral valve disease.
SOUND WAVES with frequencies greater than 20,000 cycles per second are above the limits of sound audible to the human ear and, therefore, are designated as ultrasound. Over the past several years ultrasonic irradiation has been widely employed as a form of treatment in physical medicine.' Concurrently, other uses of ultrasound have been developed that utilize the particular transmission charact...
متن کاملAnalysis of dynamics of mitral Starr-Edwards valve prosthesis using reflected ultrasound.
The speed of closure of the mitral valve during diastole, as recorded by ultrasonocardiography, is reduced in patients with mitral stenosis. A pattern of movement similar to that of severe mitral stenosis is seen in recordingsfrom patients with normally functioning mitral Starr-Edwards prostheses. Simultaneous ultrasound recordings of ball and cage movements show that the prosthetic valve remai...
متن کاملA study of mitral valve action recorded by reflected ultrasound and its application in the diagnosis of mitral stenosis.
The movements of two ultrasound echo signals, believed to arise from the anterior mitral leaflet and from the mitral ring, were studied in 30 normal subjects and in 100 heart-catheterization patients. Fifty patients had proven mitral stenosis. The echo from the anterior mitral leaflet is shown to have a complex pattern of movement. This pattern is analyzed into the opening and closing movements...
متن کاملReflected ultrasound as a diagnostic instrument in study of mitral valve disease.
The refinement of phonocardiography, apex cardiography, electrocardiography, vectorcardiography, cardiac catheterization, and cine-angiography in the post-war years has contributed considerably toward enhancing the clinical acumen of physicians. These techniques have become standardized and widely used as diagnostic aids, particularly in the study of valvular heart disease. In the evaluation of...
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ژورنال
عنوان ژورنال: Heart
سال: 1972
ISSN: 1355-6037
DOI: 10.1136/hrt.34.5.480