Table 3.

Left Ventricular Systolic and Diastolic Function

Preterm-Born Young Adults (n=102)Term-Born Young Adults (n=102)P*Term-Born Adults (n=30)PP
Systolic function
 Ejection fraction, %64.5±6.164.1±4.9>0.9964.3±4.8>0.99>0.99
 Longitudinal
  Strain, %−14.8±3.2−17.9±4.1<0.001−17.7±5.30.003>0.99
  Strain rate, %/s−0.90±0.21−1.06±0.31<0.001−1.08±0.310.009>0.99
  Displacement, cm3.80±1.474.71±2.540.014.23±1.560.68>0.99
  Velocity, cm/s2.25±0.783.09±0.97<0.0013.17±1.18<0.001>0.99
 Circumferential
  Basal strain, %−21.2±2.9−21.8±3.20.45−22.2±3.40.38>0.99
  Basal strain rate, %/s−1.26±0.21−1.28±0.24>0.99−1.32±0.280.63>0.99
  Basal rotation, °−7.21±4.59−8.81±5.220.08−7.65±4.12>0.990.88
  Basal rotation rate, °/s−46.2±26.4−60.2±35.40.006−52.1±29.2>0.990.83
  Mid strain, %−17.9±2.2−17.7±2.2>0.99−18.3±2.2>0.990.61
  Mid strain rate, %/s−1.06±0.14−1.04±0.19>0.99−1.09±0.18>0.990.97
  Apical strain, %−21.6±3.8−22.1±3.8>0.99−22.8±4.00.45>0.99
  Apical strain rate, %/s−1.30±0.24−1.25±0.240.39−1.33±0.24>0.990.40
  Apical rotation, °7.04±4.357.95±5.540.636.13±4.66>0.990.42
  Apical rotation rate, °/s46.3±26.256.1±30.10.0542.0±22.8>0.990.04
  Net twist angle, °14.0±6.416.9±7.80.0213.5±6.3>0.990.18
Diastolic function
 Longitudinal
  Strain rate, %/s0.95±0.351.31±0.52<0.0011.07±0.310.410.01
  Velocity, cm/s−2.38±0.81−3.22±1.36<0.001−2.60±1.140.840.09
 Circumferential
  Basal strain rate, %/s1.42±0.241.62±0.39<0.0011.55±0.420.11>0.99
  Basal rotation rate, °/s56.7±37.571.4±40.50.0373.3±45.70.16>0.99
  Mid strain rate, %/s1.13±0.181.13±0.19>0.991.18±0.210.590.67
  Apical strain rate, %/s1.45±0.361.44±0.39>0.991.42±0.34>0.99>0.99
  Apical rotation rate, °/s−45.5±27.7-52.3±41.80.57−48.0±35.3>0.99>0.99
  • Values as mean±SD unless stated otherwise. P values were adjusted with the Bonferroni method.

  • * Preterm-born young adults versus term-born young adults. Comparisons adjusted for age and sex.

  • †Preterm-born young adults versus term-born adults. Comparisons adjusted for sex.

  • Term-born young adults versus term-born adults. Comparisons adjusted for sex.