Skip to main content

Table 2 Comparison of mechanical contraction synchrony parameters

From: Relationship between left ventricular mechanical synchrony and left ventricular systolic function: a CZT-SPECT analysis

Variables Group 1 Group 2 Group 3 Group 4 F P
PP (°) 138.2 ± 37.2 129.1 ± 20.5 123.4 ± 19.8 125.8 ± 20.3 5.20 0.002
PSD (°) 57.9 ± 18.9 41.3 ± 16.3 31.8 ± 19.4 15.3 ± 7.4 188.72 0.000
PHB (°) 184.3 ± 65.3 122.4 ± 60.1 86.1 ± 30.0 43.4 ± 15.1 202.88 0.000
HS 2.0 ± 0.5 2.8 ± 0.7 2.9 ± 0.6 4.0 ± 0.9 171.05 0.000
HK 4.6 ± 3.5 9.4 ± 5.2 9.3 ± 4.6 18.2 ± 8.8 101.36 0.000
  1. Continuous variables are mean ± SD. Group 1, EF < 35%. Group 2, 35% ≤ EF < 45%. Group 3, 45% ≤ EF < 50%. Group 4, EF ≥ 50%
  2. PP Peak phase, PSD Phase standard deviation, PHB Phase histogram bandwidth, HS Histogram skewness, HK Histogram kurtosis, Sig. Significance
  3. *Statistically significant finding (P < 0.001)