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. 2018 Mar 13;9:213. doi: 10.3389/fphys.2018.00213

Table 1.

Characteristics of healthy volunteers and HCM patients.

Healthy volunteers (n = 38) HCM patients (n = 85) p-value
Age, years 47 ± 15 45 ± 14 0.54
Male 25 (66) 58 (68) 0.84
Body mass index, kg/m2 24 ± 4 26 ± 4 0.06
Systolic BP, mmHg 117 ± 14 118 ± 14 0.76
Diastolic BP, mmHg 70 ± 10 72 ± 12 0.33
CMR DIMENSIONS AND FUNCTION
LV end-diastolic volume, ml 155 ± 35 154 ± 33 0.88
LV end-systolic volume, ml 50 ± 17 41 ± 16 0.007
LV ejection fraction, % 68 ± 5 74 ± 7 0.00003
LV mass index, g/m2 54 ± 11 72 ± 25 0.00002
Maximal LV wall thickness, mm 11 ± 1 20 ± 6 2 × 10−14
Left atrial diameter, mm 33 ± 7 39 ± 7 0.00004
ECG FEATURES
Heart rate, bpm 58 ± 11 58 ± 10 0.81
QRS axis, ° 40 ± 34 13 ± 43 0.0007
QRS duration, ms 91 ± 9 98 ± 15 0.02
R wave amplitude 683 ± 200 764 ± 341 0.46
QRS amplitude, mV 1441 ± 414 1825 ± 652 0.002
QRS ascending slope 74 ± 22 89 ± 32 0.025
QRS descending slope −118 ± 51 −150 ± 57 0.001
Pathological Q wave 0 20 (23) 0.0004
T wave axis, ° 34 ± 17 69 ± 54 0.0001
Abnormal T wave axis 0 28 (35) 9 × 10−6
T wave amplitude, mV 356 ± 141 170 ± 257 0.0001
T wave inversion 0 26 (30) 0.00002
Giant T wave inversion 0 6 (7) 0.18
T peak to T end interval, ms 81 ± 14 85 ± 18 0.16
ST segment displacement, mV 42 ± 45 26 ± 49 0.14
QTc interval, ms 411 ± 17 440 ± 27 8 × 10−8
JTc interval, ms 300 ± 43 354 ± 99 0.00003

Mean ± standard deviation, or number of participants (%). BP, blood pressure; CMR, cardiovascular magnetic resonance; LV, left ventricular. Bold values mean p-value significant (p < 0.05).