Hemodynamically responsive system for and method of treating a m

Details Hemodynamically responsive system for and method of treating a m Hemodynamically responsive system for and method of treating a m

1990-06-01

1992-02-04

Jaworski, Francis

Surgery

Truss

Pad

128419PG, A61N 100

Patent

active

050852132

ABSTRACT:
A system for a method of treating a malfunctioning heart is based on hemodynamics, the pressure in the right side of a patient's circulatory system being sensed. A first signal is developed representative of mean right atrial pressure (MRAP) and a second signal is developed representing right ventricular systolic pressure (RVSP). When the MRAP increases by at least a predetermined amount and the RVSP decreases at least a given amount, the combination being an indication of hemodynamic compromise, cardioversion/defibrillation is effected. In these cases, a heart rate criterion, for example a rate over 150 bpm, may also have to be met before cardioverting/defibrillation is initiated. Fixed or variable baselines against which the changes in pressure are measured may be provided.

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