Method and apparatus for measurement of mean pulmonary artery pressure from a ventricle in an ambulatory monitor
First Claim
1. A system for determining mean pulmonary arterial pressure of a patient, comprising:
- a first sensor adapted to be located in a ventricle of a heart to measure ventricular pressure;
a first circuit to measure electrocardiogram (EGM) signals; and
a processing circuit coupled to receive signals indicative of the ventricular pressure and the EGM signals, and to determine there from, mean pulmonary arterial pressure (MPAP).
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Accused Products
Abstract
A system and method for determining mean pulmonary arterial pressure (MPAP) using a pressure sensor located within a ventricle of a heart, and a signal indicative of cardiac electrical activity such as an electrocardiogram (EGM) signal. The pressure may be sensed within the right and/or left ventricle using an implanted pressure sensor. The sensed pressure may be used to determine the Ventricular Systolic Pressure (VSP) and an estimated Pulmonary Arterial Diastolic pressure (ePAD). The VSP, ePAD, and time intervals associated with systole and diastole may then be used to obtain an MPAP that closely approximates mean pulmonary arterial pressure measured using a sensor located in the pulmonary artery.
121 Citations
23 Claims
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1. A system for determining mean pulmonary arterial pressure of a patient, comprising:
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a first sensor adapted to be located in a ventricle of a heart to measure ventricular pressure;
a first circuit to measure electrocardiogram (EGM) signals; and
a processing circuit coupled to receive signals indicative of the ventricular pressure and the EGM signals, and to determine there from, mean pulmonary arterial pressure (MPAP). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of determining mean pulmonary arterial pressure (MPAP), comprising:
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a.) sensing pressure within a ventricle of a heart;
b.) sensing an electrocardiogram (EGM) signal of the heart; and
c.) using the sensed pressure and the EGM signal to derive the MPAP. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for deriving mean pulmonary arterial pressure (MPAP) of a patient, comprising:
- pressure sensing means adapted to be located in a ventricle of a heart for measuring pressure in the ventricle;
EGM sensing means for sensing an electrocardiogram (EGM) signal; and
processing means for deriving the (MPAP) based on the measured ventricular pressure and the EGM signal.
- pressure sensing means adapted to be located in a ventricle of a heart for measuring pressure in the ventricle;
Specification