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Table 1 Comparing ECG and echocardiographic findings between group A and group B

From: Global longitudinal strain detects subtle left ventricular systolic dysfunction in Duchenne muscular dystrophy patients and carriers

  Group A (DMD patients) Group B (Control) P value
(n = 28) (n = 28)
Age (years) 9.14 ± 2.85 10.64 ± 3.29 0.08
Echocardiography
IVSd (mm) 6.21 ± 0.91 6.1 ± 0.99 0.66
PWd (mm) 6.46 ± 0.88 6 ± 0.98 0.07
LVEDD (mm) 37.5 ± 3.66 44.17 ± 4.38 < 0.001
LVESD (mm) 25.21 ± 2.69 27.71 ± 3.7 0.005
LVEDV (ml) 62.75 ± 13.71 66.71 ± 4.59 0.15
LVESV (ml) 23.14 ± 6.82 21.5 ± 3.38 0.132
LA dimension (mm) 27.35 ± 2.62 29.93 ± 3.62 0.003
EF% Modified Simpson's (%) 62.57 ± 5.38 67.64 ± 3.66 < 0.001
Diastolic function E/e' 4.5 ± 1.23 5.42 ± 0.96 0.003
GLS (%) − 18.7 ± 2.91 − 21.25 ± 1.53 < 0.001
ECG
HR (bpm) 95.75 ± 9.37 87.82 ± 7.01 < 0.001
PR interval (msec) 152.85 ± 16.91 153.46 ± 17.95 0.89
QRS duration (msec) 90 ± 5.93 87.5 ± 5.88 0.12
  1. bpm bear per minute, ECG electrocardiography, EF ejection fraction, GLS global longitudinal strain, HR heart rate, IVSd interventricular septum diameter, mm millimeter, LA left atrium, LVEDD left ventricular end-diastolic diameter, LVEDV left ventricular end-diastolic volume, LVESD left ventricular end-systolic diameter, LVESV left ventricular end-systolic volume, msec millisecond, PWd posterior wall diameter