Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-03-22
2005-03-22
Manuel, George (Department: 3762)
Surgery
Diagnostic testing
Cardiovascular
Reexamination Certificate
active
06869404
ABSTRACT:
A minimally invasive, implantable heart sound and ECG monitor and associated method for deriving blood pressure from heart sound data. The device is equipped with an acoustical sensor for detecting first and second heart sounds which are sampled and stored during sensing windows following R-wave and T-wave detections, respectively. ECG and heart sound data are stored in a continuous, looping memory, and segments of data are stored in long-term memory upon an automatic or manual data storage triggering event. Estimated blood pressure is calculated based on custom spectral analysis and processing of the first and second heart sounds. A calibration method includes measuring a patient's blood pressure using a standard clinical method and performing regression analysis on multiple spectral variables to identify a set of best fit weighted equations for predicting blood pressure. Concurrent ECG and estimated blood pressure may be displayed for review by a physician.
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Haupt Nicole M.
Lee Brian B.
Rieder Eric M.
Schulhauser Randal C.
Son Mark
Manuel George
Medtronic Inc.
Soldner Michael C.
Wolde-Michael Girma
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