Comparison of ECG parameters in terms of apical contraction
| Normal | Hypokinetic | Dyskinetic | p Value | |
|---|---|---|---|---|
| Number | 27 | 12 | 11 | |
| HR (bpm) | 65.5±11.4 | 65.4±16.0 | 67.4±11.9 | 0.92 |
| PR (ms) | 163.7±26.9 | 173.1±38.4 | 189.6±25.4 | 0.07 |
| QRS (ms) | 100.0±15.7 | 96.7±19.9 | 102.2±7.07 | 0.69 |
| QT (ms) | 429±30.7 | 438±44.2 | 421±43.1 | 0.55 |
| QTc (ms) | 440±26.0 | 452±15.2 | 437±31.5 | 0.33 |
| Sokolow-Lyon voltage (mV) | 4.89±1.48 | 4.42±1.83 | 3.50±1.75 | 0.07 |
| Max ST (mV) | −0.14±0.18 | −0.18±0.14 | 0.02±0.18*** | 0.02 |
| Max T waves (mV) | −1.02±0.63 | −1.02±0.40 | −0.43±0.59* | 0.02 |
| fQRS | 6 (22.2%) | 7 (58.3%) | 8 (72.7%) | 0.01 |
Each value is mean±SD or number (%). *p<0.05 vs Normal, **p<0.05 vs hypokinetic by Scheffe's post hoc analyses after one-way analysis of variance.
fQRS, fragmented QRS complexes; HR, heart rate; Max ST, maximum level of ST change; Max T waves, maximum amplitude of positive or negative T waves at lateral precordial leads; QTc, corrected QT interval.