Abstract: A heart monitoring device comprises a sensing unit for detecting R-waves of an ECG signal, an ECG signal parameters determining unit responsive to the output signal of the sensing unit and producing at three outputs six signals related to features of the R-to-R intervals, a logic circuit having its inputs connected to the outputs of the ECG signal parameters determining unit, a storage unit having its inputs connected to the outputs of the logic circuit, an indication unit counting and indicating the results obtained by monitoring heart activity and having inputs connected to the outputs of the logic circuit, a timing unit having an input connected to the output of the sensing unit and outputs connected to the control inputs of the ECG signal parameters determining unit, the storage unit, and the indication unit. The ECG signal parameters determining unit, the storage unit and the indication unit are provided with reset inputs connected to a reset unit.

Abstract: An electronic ergometer for cardiac arrhythmia patients is disclosed, and it is capable of determining and indicating the magnitude of power developed by an individual. In addition, it can indicate the power at which a cardiac arrhythmia occurs. In one embodiment of the invention, the electronic ergometer is capable of storing the magnitude of power developed by the patient at which the cardiac arrhythmia occurred. The device consists of various electronic components encased in a simple housing attached to the belt, or other clothing, of the patient. It is used by the patient during physical activity, in order to monitor the work and power of the patient. In addition, since an electrocardiogram sensor is provided, the unit sounds an alarm when a cardiac arrhythmia occurs. This advises the patient to cease his working and to rest.