The phonocardiograms (PCGs), recording of heart sounds, have many advantages over traditional auscultation in that they may be replayed and analyzed for spectral and frequency information. PCG is not a widely used diagnostic tool as it could be. One of the major problems with PCG is noise corruption. Many sources of noise may pollute a PCG signal including lung and breath sounds, environmental ...

to this article. Introduction Heart murmurs are heard commonly in infants, children, and adolescents. Approximately 50% to 70% of individuals seen for school or sports preparticipation examinations have a heart murmur. Indeed, a murmur is heard in most children at one or more of their examinations. Because most murmurs are innocent (ie, normal), it is important to differentiate those that are a...

The project describes a system for detecting cardiac murmurs so people are aware about their heart condition. The murmurs are the pathologic heart sounds that are produced because of turbulent blood flow that is enough to cause audible noise. Murmurs can be detected by a stethoscope but the accuracy level is not satisfactory. Different methods have been developed for detection and all are effic...

BACKGROUND Identification of the nature of cardiac murmurs during the periodic health evaluation (PHE) of athletes is challenging due to the difficulty in distinguishing between murmurs of physiological or structural origin. Previously, computer-assisted auscultation (CAA) has shown promise to support appropriate referrals in the nonathlete pediatric population. HYPOTHESIS CAA has the ability...

Acquired aortic stenosis, when severe, often gives rise to pulsus alternans.' Other relatively common causes for pulsus alternans include hypertensive heart disease, coronary artery disease, syphilitic heart disease and cardi~myopathy.~ When pulsus alternans is present, the clinician can usually appreciate it through the use of a sphygmomanometer, in which case when the cuff is infiated to near...

the apex even without vasoactive maneuvers. On follow-up clinic visits two weeks and three months after discharge, the patient felt quite well, and auscultation of the heart revealed prominent late systolic click but no murmur. However, a late systolic murmur could again be precipitated by isometric exercise. DIscussIoN Until the past few years, a late systolic murmur at the apex, preceded by a...

The phonocardiograph was born soon after the electrocardiograph, but their growth has been unequal in that the latter has been applied immediately to clinical medicine and has flourished while the former test, used to display such murmurs as the presystolic and the one identified with patent ductus arteriosus, has become largely exhibitional and for that reason has lost ground. More recently, h...

ONTRARY to the opinion of older clinicians diastolic murmurs are not always organic. This is demonstrated especially by the experiences we made with amplifier auscultation.2) Such non-organic murmurs may be produced by annular incompetence of a valve or by increased blood flow across a normal valve. The murmurs generated by such mechanisms in this report will be designated as " functional " to ...

ee front matter & 2005 upe.2005.08.002 ing author. Tel.: +44 151 2 5643. ess: [email protected] Summary Cardiac murmurs are a common finding in asymptomatic paediatric patients. The most common causes are innocent murmurs and minor structural heart disease. Beyond the age of 6 weeks patients are unlikely to have major underlying heart disease. Presentation of asymptomatic murmurs may be varia...

tant contribution in the evolution and refinement of diagnostic techniques that began when Barlow's angiographic observations provided the first rational basis for the origin of apical late systolic murmurs.3 Intracardiac phonocardiography subsequently recorded the clicks and late systolic murmur within the left atrium, a site appropriate for auscultatory events originating in the mitral appara...