An electronic stethoscope with diagnosis capability

A means of analyzing acoustic heart sounds is described. The system analyzes heart sound data, isolating key features of the heartbeat signatures to produce a list of possible diagnoses. The system has six major components: heart beat extraction, segmentation of the heart sound cycle, extraction of murmur data, time-frequency analysis of murmurs, statistical metrics and diagnosis algorithms. Implementation of each component is discussed in detail. Diagnosis algorithms for the following events/conditions are included: heart rate, sinus arrhythmia, tachycardia, bradycardia, aortic stenosis and mitral regurgitation.

[1]  A. Haghighi-Mood,et al.  Time-frequency analysis of systolic murmurs , 1997 .

[2]  I. Hartimo,et al.  A boundary modification method for heart sound segmentation algorithm , 1998, Computers in Cardiology 1998. Vol. 25 (Cat. No.98CH36292).

[3]  L. Nieman,et al.  Cardiac auscultatory skills of internal medicine and family practice trainees. A comparison of diagnostic proficiency. , 1997, JAMA.

[4]  M. Groch,et al.  A new heart-sounds gating device for medical imaging , 1992, IEEE Transactions on Biomedical Engineering.

[5]  J. N. Torry,et al.  Detecting the split within heart sounds using a switched-capacitor filter , 1998, Computers in Cardiology 1998. Vol. 25 (Cat. No.98CH36292).

[6]  J.N. Torry,et al.  Graphical representation of heart sounds and murmurs , 1997, Computers in Cardiology 1997.

[7]  I. Hartimo,et al.  Heart sound segmentation algorithm based on heart sound envelogram , 1997, Computers in Cardiology 1997.