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METHOD AND APPARATUS FOR MAXIMIZING QUANTITY OF BLOOD PULSATED OUT FROM HEART BY KEEPING PACE OF ATRIUM BY USING CARDIAC DIFIBRILLATION DEVICE/ PACER
METHOD AND APPARATUS FOR MAXIMIZING QUANTITY OF BLOOD PULSATED OUT FROM HEART BY KEEPING PACE OF ATRIUM BY USING CARDIAC DIFIBRILLATION DEVICE/ PACER
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机译:通过使用心动扩张装置/心律保持心房搏动使心房搏动的血液量最大化的方法和装置
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摘要
A method and apparatus for maximizing stroke volume through atrioventricular pacing using an implanted cardioverter/pacer accomplishes AV pacing with an AV delay tailored to the particular patient, thereby maximizing accuracy and efficiency. The invention involves the measurement of successive impedance changes, or swings, from one heart cycle to the next, across a pair of electrodes connected in proximity to the heart, the processing of the successive impedance changes to detect variations and directions of variations thereof, the issuance of atrial and ventricular pacing pulses, separated by a time interval therebetween, to the atria and to the ventricles, respectively, and the selective increasing or decreasing of the time interval between the atrial and ventricular pacing pulses in dependence on the directions of variation of the successive impedance changes to maximize impedance swings.
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