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Updated: Jun 7, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Computerized acoustic cardiography correlates with echocardiography and invasive haemodynamics after percutaneous
1Department of Medicine, Division of Cardiology, Oregon Health & Science University, UHN-62, 3181 SW Sam Jackson Park Road, Portland, Oregon, USA.
Background:
Rheumatic mitral stenosis severity has been assessed by the systolic time interval between the QRS onset and the first heart sound (QS1) by phonocardiography. We hypothesized that non-invasive computerized acoustic cardiography could evaluate mitral stenosis severity compared with echocardiography and invasive haemodynamics in patients undergoing percutaneous transvenous mitral commissurotomy (PTMC).
Methods:
27 patients underwent computerized acoustic cardiography, echocardiography, and invasive haemodynamic measurements prior to and after PTMC.
Results:
The mean age was 31 ± 10 years, and 21 (78%) were female. By echocardiography, mitral valve area increased from 0.82 ± 0.14 to 1.50 ± 0.24 cm(2) (p < 0.0001). The QS1 interval decreased from 101.7 ± 12.9 to 93.2 ± 9.2 ms (p < 0.0001). The change in the QS1 interval correlated with the change in mitral valve area by echocardiography (p = 0.037), right ventricular systolic pressure (p < 0.0001), and the invasive mitral valve gradient (p = 0.076).
Conclusions:
Acoustic cardiography may be used as an adjunctive non-invasive diagnostic tool to assess mitral stenosis severity.
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