Key result
Angiocardiographic mitral orifice projection aids stenosis diagnosis while long axial projection identifies regurgitation-dominant lesions.
Why the study?
An angiocardiographical analysis was needed to evaluate rheumatic mitral valvular changes and improve diagnostic validity using specific projections.
Does angiocardiographical analysis using specific projections improve the diagnosis of rheumatic mitral valvular changes in patients with rheumatic mitral valvular disease?
Observational (n=344)
Does angiocardiographical analysis using specific projections improve the diagnosis of rheumatic mitral valvular changes in patients with rheumatic mitral valvular disease?
Specific angiocardiographical projections (mitral orifice and long axial) are useful for differentiating stenosis-dominant from regurgitation-dominant rheumatic mitral valvular disease.
May support tailored projections during angiocardiography for rheumatic mitral disease; hypothesis-generating and leaves open validation against modern imaging.
An angiocardiographical analysis of the rheumatic mitral valvular changes was performed on 344 patients examined during the period from October, 1977 to July, 1980. The following results were obtained: 1) In the analysis of the mitral apparatus, the mitral orifice projection which enables us to observe the mitral annulus as en face and the long axial projection enabling us to observe the profile was particularly useful for the diagnostic validity. 2) Mitral orifice projection was useful for the diagnosis of stenosis dominant lesion, while long axial projection was beneficial for the diagnosis of regurgitation dominant lesion. 3) The measurements of mitral apparatus were carried out through these projection methods. It was found that the diameter of annular ring as well as the area of posterior leaflet were markedly increased in the mitral regurgitation group.
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Ohta et al. (1982) conducted an observational in Rheumatic mitral valvular disease (n=344). Angiocardiographical analysis (mitral orifice and long axial projections) was evaluated on Diagnostic validity of angiocardiographical projections for mitral valvular changes. Angiocardiographical analysis in 344 patients showed mitral orifice projection was useful for diagnosing stenosis, while long axial projection was beneficial for regurgitation-dominant lesions.
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