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Changes in cardiac output or blood stress could also be of value in diagnosis and administration chronic and/or recurring disease states (e.g., congestive heart failure, hypertension, syncope). Current is transmitted by means of the chest and seeks the trail of least resistance, i.e., the blood filled aorta. With every heartbeat, the blood quantity and velocity of the aorta change. Impedance plethysmography measures the corresponding change in impedance and calculates the hemodynamic parameters. Embodiments of the present invention are directed to a physiological monitoring gadget which is configured to document signals that reflect blood movement and/or blood stress, and which may also report ECG alerts. An instance of clinical use is the evaluation of individuals experiencing syncope (faints) of unknown origin. AC current with an electrical subject to detect native electrical impedance of a portion of the affected person's body encompassed by the electrical subject, the native electrical impedance being a surrogate measure of local blood movement of the portion of the patient's body. At the very least a portion of the portable monitoring gadget is configured to be insertable subcutaneously into the patient's body.
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