  Method: In this study, a new method is introduced for distinguishing
noise-free segments of ECG from noisy segments that use sample amplitude
dispersion with an adoptive threshold for variance of samples amplitude and a
method which uses compatibility of detected beats in ECG and some of the other
signals which are related to the heart activity such as BP, arterial pressure
(ART) and pulmonary artery pressure (PAP). A prioritization is applied in other
pulsatile signals based on the amplitude and clarity of the peaks on them, and
a fusion strategy is employed for segments on which ECG is noisy and other
available signals in the data, which contain peaks corresponding to R peak of
the ECG, are scored in three steps scoring function.
