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. 2020 Aug;10(4):725–737. doi: 10.21037/cdt-20-221

Table 2. Comparison of CMR parameters and strain indices between the preserved EF group, reduced EF group and the control group.

Parameters Control Preserved EF Reduced EF P value1 P value2
CMR parameters
   PFR, mL/s 372.78±63.94 402.83±158.90 296.14±116.40 0.141 0.002
   PER, mL/s 407.39±69.33 461.29±133.09 240.35±155.92 0.005 <0.001
   EDV, mL 95.50±13.13 114.09±33.61 162.80±63.89 <0.001 <0.001
   ESV, mL 32.78±7.04 41.61±22.04 112.41±59.24 0.001 <0.001
   SV, mL 62.72±10.40 72.48±18.55 50.38±13.24 <0.001 <0.001
   EDVi, mL/m2 57.79±9.40 67.28±17.97 93.88±30.00 <0.001 <0.001
   ESVi, mL/m2 19.84±5.23 24.51±12.08 64.63±30.18 0.005 <0.001
   SVi, mL/m2 37.95±5.91 42.77±10.00 29.25±5.45 0.001 <0.001
   EF, % 65.70±5.48 64.57±8.78 34.10±11.36 0.241 <0.001
   LGE, g – 19.80±21.43 55.16±28.62 – <0.001
   LGE% – 18.20±14.87 46.22±21.04 – <0.001
Strain parameters
   PSR, % 39.49±7.55 30.46±16.86 13.69±11.18 <0.001 <0.001
   PSC, % −21.85±2.11 −17.40±4.81 −8.67±4.71 <0.001 <0.001
   PSL, % −14.29±2.11 −11.51±3.64 −6.19±4.16 <0.001 <0.001
   PSSRR, 1/s 2.46±0.55 1.83±2.49 0.93±0.94 <0.001 <0.001
   PSSRC, 1/s −1.18±0.16 −0.97±0.45 −0.51±0.31 <0.001 <0.001
   PSSRL, 1/s −0.84±0.17 −0.74±0.33 −0.39±0.30 0.040 <0.001
   PDSRR, 1/s −2.78±0.86 −2.28±2.06 −0.92±0.78 <0.001 <0.001
   PDSRC, 1/s 1.30±0.26 1.12±0.34 0.58±0.39 0.003 <0.001
   PDSRL, 1/s 0.92±0.25 0.72±0.43 0.31±0.36 0.002 <0.001

P value1: preserved EF group vs. control group; P value2: preserved EF vs. reduced EF group. CMR, cardiac magnetic resonance; EF, ejection fraction; PFR, peak filling rate; PER, peak ejecting rate; EDV, end diastolic volume; ESV, end systolic volume; SV, stroke volume; EDVi, EDV index; ESVi, ESV index; SVi, SV index; LGE, late gadolinium enhancement; PSR, peak strain radial; PSC, peak strain circumferential; PSL, peak strain longitudinal; PSSRC; peak systolic strain rate circumferential; PSSRR, peak systolic strain rate radial; PSSRL, peak systolic strain rate longitudinal; PDSRR, peak diastolic strain rate radial; PDSRC, peak diastolic strain rate circumferential; PDSRL, peak diastolic strain rate longitudinal.