5 , the mean RR interval was positively associated with the slope in the relationship between RR-1 and E' in patients with a mean RR interval <0.8 second (r=0.21, p=0.082) and negatively in patients with a mean RR interval >0.75 second (r=-0.21, p=0.097), although it did not reach statistical significance.
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Relation Between RR Intervals and Early Diastolic Mitral Annular Velocities in Atrial Fibrillation.
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