Sensing for heart failure management
A technology for heart failure and processing circuits, applied in the direction of cardiac catheters, catheters, sensors, etc., can solve problems such as ineffective management of heart failure symptoms, achieve the effect of improving patients' clinical outcomes and increasing confidence
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[0032] In general, this disclosure describes example techniques related to determining a patient's heart failure status based on physiological parameters associated with cardiac function monitored by one or more medical devices. Subcutaneous IMDs may be used in some of the example techniques and may be configured for placement under the skin of a patient's torso, such as between the skin and the pectoral muscles. In some examples, the processing circuitry may determine the patient's current Z value, StO, based on signals detected by, for example, a plurality of electrodes of a subcutaneous IMD and one or more optical sensors. 2 value and PTT value. In some examples, the IMD may be leadless, and the optical sensor and electrodes may be integrated with and / or connected to the housing of the IMD.
[0033] The processing circuitry can convert the current Z value, StO 2 Values and PTT values are compared to corresponding baseline values, which may be stored in the memory of t...
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