Abstract: A portable apparatus for conveying blood flow parameters to a user, the apparatus comprising: a transducer device for providing for Doppler monitoring of flows within a patient; a processing unit interconnected to the transducer unit and adapted to extract a blood flow signal from the operation of the transducer and process the blood flow signal so as to produce a video blood flow signal and an audio blood flow signal; a display unit interconnect to the processing unit for visualising the video blood flow signal; and at least one audio emission devices interconnected to the processing unit for emission of the audio blood flow signal to the ears of the user.

Abstract: An apparatus for measuring physiologic tissues perfusion information including: a first device producing a first output indicative of blood flow of a patient; a second device producing a second output indicative of oxygen content of the blood; and a processor combining said first and said second outputs to produce a third output indicative of tissue perefusion.

Abstract: An apparatus for measuring pressure volume loop parameters of a patient (10), the apparatus comprising: an intra cardiac blood flow measurement device (11) for producing at least a first output indicative of the blood flow of a patient (10); a pressure sensor means (14) producing at least a second output indicative of the blood flow pressure of a patient (10); and a processing element (12) for combining at least the first and second outputs to produce at least one third output indicative of the operation of the pressure volume loop of the patient (10).

Abstract: A portable apparatus for conveying blood flow parameters to a user, the apparatus comprising: a transducer device for providing for Doppler monitoring of flows within a patient; a processing unit interconnected to the transducer unit and adapted to extract a blood flow signal from the operation of the transducer and process the blood flow signal so as to produce a video blood flow signal and an audio blood flow signal; a display unit interconnect to the processing unit for visualising the video blood flow signal; and at least one audio emission devices interconnected to the processing unit for emission of the audio blood flow signal to the ears of the user.

Abstract: An apparatus for measuring physiologic tissues perfusion information including: a first device producing a first output indicative of blood flow of a patient; a second device producing a second output indicative of oxygen content of the blood; and a processor combining said first and said second outputs to produce a third output indicative of tissue perefusion.

Abstract: A method of cardiac physiologic monitoring is disclosed comprising the steps of: (a) utilizing an external ultrasonic transducer element attached to a patient to determine an information signal indicating of blood floe within a patient's heart; (b) processing the information signal to determine physiologic parameters associated with the heart. The physiologic parameters can include at least one of transaortic peak velocity, mean transvalvular pressure gradient, time velocity integral, stroke volume, cardiac output or any other product as an analogue of output. The method can preferably include monitoring the change in time of the physiologic parameters through continual monitoring of the information signal. The monitoring step preferably can include determining an alarm state if the parameters are preferably outside a predetermined range.