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Table 2 LA phasic mechanical functional indexes in the four study groups

From: Clinical implication of disturbed left atrial phasic functions in the heterogeneous population associated with hypertension or atrial fibrillation

VariableControls (n = 28)Isolated HTN group
(n = 25)
Lone AF group
(n = 24)
HTN with PAF group
(n = 28)
P
LA strain indexes (%)
 PALSpump−17.13 ± 2.94−16.65 ± 2.90−13.73 ± 5.06*#−11.62 ± 4.19*#0.000
 PALSres36.10 ± 4.9029.95 ± 5.56*29.45 ± 7.53*26.49 ± 6.64*0.000
 PALScond−18.96 ± 4.56−13.30 ± 4.81*− 15.73 ± 5.26*−14.87 ± 5.30*0.001
LA strain rate indexes (s−1)
 PALSRpump−2.49 ± 0.45−2.30 ± 0.57−1.88 ± 0.78*−1.54 ± 0.62*#&0.000
 PALSRres1.71 ± 0.301.57 ± 0.711.43 ± 0.34*1.23 ± 0.31*#0.001
 PALSRcond−1.80 ± 0.95−1.07 ± 0.41*− 1.18 ± 0.35*−1.10 ± 0.33*0.000
LA strain ratio and strain rate ratio indexes
 PALSpump/PALSres0.48 ± 0.080.57 ± 0.11*0.46 ± 0.13#0.44 ± 0.13#0.001
 PALScond/PALSres0.52 ± 0.080.43 ± 0.11*0.54 ± 0.13#0.56 ± 0.13#0.001
 PALSpump/PALScond0.96 ± 0.311.48 ± 0.77*0.97 ± 0.47#0.90 ± 0.53#0.001
 PALSRpump/PALSRcond1.55 ± 0.502.39 ± 0.93*1.79 ± 0.81#1.52 ± 0.90#0.000
LA synchrony indexes (%)
 TpSpump-SD%2.80 ± 0.893.48 ± 1.213.75 ± 1.33*4.19 ± 1.47*0.001
 TpSres-SD%5.84 ± 0.956.68 ± 1.767.22 ± 2.39*6.70 ± 2.030.071
 TpSRpump-SD%2.69 ± 0.722.72 ± 0.722.96 ± 1.193.06 ± 1.120.386
 TpSRres-SD%5.67 ± 2.125.61 ± 1.545.67 ± 1.826.29 ± 1.930.463
 TpSRcond-SD%4.13 ± 1.404.67 ± 1.244.47 ± 1.094.49 ± 1.330.480
  1. AF Atrial fibrillation, cond Atrial conduit phase, HTN Hypertension, LA Left atrial, PAF Paroxysmal atrial fibrillation, PALS Peak atrial longitudinal strain, PALSR Peak atrial longitudinal strain rate, pump Atrial pump phase, res Atrial reservoir phase, TpS-SD% The standard deviation of time to peak atrial longitudinal strain corrected by RR interval, TpSR-SD% The standard deviation of time to peak atrial longitudinal strain rate corrected by RR interval
  2. *P < 0.05 vs. controls, #P < 0.05 vs. isolated HTN group, &P < 0.05 vs. lone AF group
  3. Data are expressed as mean ± SD