highly significantp < 0.001
HR showed a highly significant positive correlation with total IVPG ( p < 0.001), basal IVPG ( p < 0.001), mid-to-apical IVPG ( p = 0.003), E ( p < 0.001), and E’ ( p < 0.001) average; meanwhile, HR revealed a highly significant negative correlation with E/E’ ( p < 0.001).