Digital Subtraction Phonocardiography (DSP) applied to the detection and characterization of heart murmurs.

ABSTRACT:

Background

During the cardiac cycle, the heart normally produces repeatable physiological sounds. However, under pathologic conditions, such as with heart valve stenosis or a ventricular septal defect, blood flow turbulence leads to the production of additional sounds, called murmurs. Murmurs are random in nature, while the underlying heart sounds are not (being deterministic).

Innovation

We show that a new analytical technique, which we call Digital Subtraction Phonocardiography (DSP), can be used to separate the random murmur component of the phonocardiogram from the underlying deterministic heart sounds.

Methods

We digitally recorded the phonocardiogram from the anterior chest wall in 60 infants and adults using a high-speed USB interface and the program Gold Wave

SUBMITTER: Akbari MA 

PROVIDER: S-EPMC3258229 | biostudies-literature | 2011 Dec

REPOSITORIES: biostudies-literature