Apparatus and a method for qt correction

An apparatus comprising means for performing:

• receiving an ECG signal;
• extracting a plurality of beat-to-beat (RR) intervals;
• extracting a plurality of QT intervals;
• computing a first probability distribution for a range of QT values based on the plurality of QT intervals;
• computing a second probability distribution for a range of QT values based on the plurality of QT intervals and the plurality of RR intervals;
• solving one or more points, wherein the first probability distribution and the second probability distribution intersect or wherein a difference between the first probability distribution and the second probability distribution is below a pre-defined difference threshold;
• designating one of one or more QT values corresponding to the one or more solved points as a corrected QT interval for a given QT interval of the plurality of QT intervals.

A non-transitory computer readable medium comprising computer program code configured to, when executed on at least one processor of an apparatus, cause the apparatus to perform:

• receiving an ECG signal;
• extracting a plurality of beat-to-beat (RR) intervals;
• extracting a plurality of QT intervals;
• computing a first probability distribution for a range of QT values based on the plurality of QT intervals;
• computing a second probability distribution for a range of QT values based on the plurality of QT intervals and the plurality of RR intervals;
• solving one or more points, wherein the first probability distribution and the second probability distribution intersect or wherein a difference between the first probability distribution and the second probability distribution is below a pre-defined difference threshold;
• designating one of one or more QT values corresponding to the one or more solved points as a corrected QT interval for a given QT interval of the plurality of QT intervals.