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Table 3 Comparison of global left atrial function between the NOHCM and control groups

From: Quantification of left atrial function in patients with non-obstructive hypertrophic cardiomyopathy by cardiovascular magnetic resonance feature tracking imaging: a feasibility and reproducibility study

 NOHCMHealthy controlP-value
n = 33n = 28
LADI-AP (mm/m2)14.4 ± 2.314.1 ± 2.50.85
LAVI (ml/m2)
 LAVImax32.6 ± 7.931.1 ± 5.50.41
 LAVIpre-a23.3 ± 6.219.7 ± 4.90.02
 LAVImin13.6 ± 3.511.3 ± 2.9< 0.01
Reservoir function
 LA total EF (%)57.6 ± 8.263.9 ± 6.4< 0.01
 εs (%)35.0 ± 12.041.5 ± 11.20.03
 SRs (s− 1)1.3 ± 0.41.5 ± 0.40.02
Conduit function
 LA passive EF (%)28.7 ± 9.137.1 ± 10.0< 0.01
 εe (%)18.7 ± 7.925.9 ± 10.0< 0.01
 SRe (s−1)−0.8 ± 0.3− 1.1 ± 0.4< 0.01
Booster pump function
 LA active EF (%)40.3 ± 10.142.1 ± 9.20.49
 εa (%)16.3 ± 6.515.6 ± 6.30.67
 SRa (s−1)− 1.1 ± 0.5−1.0 ± 0.40.49
  1. Data are expressed as mean ± SD
  2. LADI-AP left atrial anteroposterior diameter index, LAEF left atrial emptying fraction, LAVImax left atrial maximum volume index, LAVIpre-a left atrial pre-atrial contraction volume index, LAVImin left atrial minimum volume index, εs total strain, εe passive strain, εa active strain, SRs peak positive strain rate, SRe peak early negative strain rate, SRa peak late negative strain rate