Abstract: A physiological information processing instrument according to the presently disclosed subject matter can include a memory that stores instructions, a processor that executes the instructions stored in the memory to judge whether an electrocardiogram waveform of a subject person is of at least one of a ventricular pacing beat and a left bundle branch block beat, to perform an ST measurement by applying myocardial ischemia evaluation criteria to the electrocardiogram waveform that has been judged of at least one of a ventricular pacing beat and a left bundle branch block beat, and to analyze results of the ST measurement and outputs an analysis result and information relating to myocardial ischemia in the form of audible or visible information.

Abstract: A physiological information measurement device includes: a risk level determination unit configured to analyze an electrocardiographic waveform measured by a measurement unit and to determine an occurrence risk of arrhythmia in a plurality of levels; and an arrhythmia monitoring unit configured to monitor the arrhythmia, in accordance with a level of the occurrence risk of the arrhythmia determined by the risk level determination unit.

Abstract: An electrocardiogram analyzer includes: an electrocardiogram measuring unit configured to measure an electrocardiogram based on an electrocardiographic signal of an electrode attached to a subject; a motion measuring unit configured to measure motion based on motion information of a sensor attached to the subject; and an analyzer configured to analyze occurrence of serious arrhythmia based on the electrocardiogram measured by the electrocardiogram measuring unit and the motion measured by the motion measuring unit.

Abstract: A heartbeat analyzer analyzes heartbeats of a living body to which a pacing device for outputting pacing pulses to cause a heart to beat is placed. The heartbeat analyzer includes: a heartbeat detecting section that detects the heartbeats; a pulse detecting section that detects outputs of the pacing pulses; a heartbeat determining section that determines whether the heartbeats are paced beats due to the pacing pulses or not, based on detection timings of the pacing pulses; a tachycardia determining section that, in a case where the paced beats are in a number that is equal to or larger than a predetermined heart rate, and are contained in the heartbeats at a predetermined ratio or more, determines that pacing tachycardia caused by the pacing pulses occurs in the living body; and a notifying section that notifies of the occurrence of the pacing tachycardia.