Device and method for automatically adjusting tachycardia recognition criteria based on detected parameter

摘要: An implantable medical interventional device delivers electrical therapies to the heart of implant patient treat pathological tachycardia. A first sensor generates a signal indicative patient's ECG, and second in form an activity such as accelerometer representative current status physical exercise by patient. evaluation system establishes rate criteria for recognizing tachycardias, be applied against ECG recognize tachycardia distinguish it from physiological experienced control modifies according nature signal, enhance recognition distinction. In embodiment, at boundary between particular is modified shifting different rate. The shifted higher when indicates change rest exercise, lower that rest. Bipolar floating electrodes sense atrial status, solely defibrillation ventricular found attributable primary fibrillation. Such situation may determined measuring R-R interval beats detect irregularity. modification disabled fibrillation detected.