METHOD AND APPARATUS FOR DETECTING SUBAUDIBLE CARDIAC VIBRATIONS

摘要

A monitoring system senses a physiological signal indicative of mechanical vibrations including audible and/or subaudible frequency ranges and presents information related to the physiological signal to a user. The presented information includes subaudible components of the physiological signal. In various embodiments, the information can be presented as a visual signal representing the mechanical vibrations including the subaudible components, an audial signal representing the mechanical vibrations having a spectrum shifted to an audible frequency range, and/or an audial signal representing the mechanical vibrations having a spectrum compressed into an audible frequency range. An example of the physiological signal can include a heart sound signal indicative of heart sounds including cardiac mechanical vibrations in audible and subaudible frequency ranges.

主权项

1. A system for monitoring a patient and presenting diagnostic information to a user, the system comprising:
a vibration sensor configured to sense a physiological signal indicative of mechanical vibrations in a sensing frequency range including audible and subaudible frequency ranges; a processing circuit coupled to the vibration sensor, the processing circuit configured to produce one or more presentation signals representing the mechanical vibrations in a presentation frequency range including at least one subaudible frequency range of the sensing frequency range; and a user interface coupled to the processing circuit, the user interface configured to present the one or more presentation signals to the user.