Non-invasive Methods and Systems for Assessing Cardiac Filing Pressure

Featured are methods and systems for assessing cardiac filing pressure non- invasively. Such methods include, inter alia, arranging a photoplethysmography (PPG) transducer on a finger of a patient and fluidly coupling a pressure transducer to the patient's mouth so that the pressure transducer measures expiratory pressure. The PPG transducer provides an output of a pulse volume signal of cardiac circulatory flow. Such methods also including determining a pulse amplitude ratio, using the pulse volume near the end of the expiratory effort and a baseline pulse volume, and assessing the pulse amplitude ratio so as to determine a filing pressure condition for the heart of the patient.

WO 2,010,005,536

Inventor(s): SILBER HARRY A [US]

Type of Offer: Licensing

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