Research Article
Effects of Ivabradine on Residual Myocardial Ischemia after PCI Evaluated by Stress Echocardiography
Table 4
Stress echocardiography after 30 days of therapy (T2).
| | IG pts | CG pts | | T2 | T2 | value | Rest | Peak exercise | Rest | Peak exercise | Rest | Peak exercise |
| Mean heart rate (bpm) | 63.6 ± 4.2 | 132.3 ± 13.2 | 63.7 ± 10.5 | 120.4 ± 15 | 0.97 | 0.03 | Max HR (bpm) | 79.3 ± 7.1 | 71.1 ± 10.9 | 0.02 | Chronotropic reserve (bpm) | 68.7 ± 14 | 0.0007 | 48.7 ± 14 | Systolic blood pressure (mmHg) | 122.8 ± 8 | 182.9 ± 8 | 120.7 ± 13 | 179.3 ± 20 | 0.6 | 0, 5 | Exercise time | 9′:49″±48″ | 8′:09″±59″ | 0.0001 | METs | 10.4 ± 0.7 | 9.3 ± 0.6 | 0.0001 | Maximal test (%) | 30% | 14% | 0.06 | DP | 24194 ± 2697 | 20358 ± 4671.8 | 0.01 | ΔDP | 16.4 ± 2.8 | 12.6 ± 3.5 | 0.003 | Peak power (Watt) | 139.3 ± 13.4 | 118.7 ± 19.6 | 0.003 | Symptoms (%) | 7 | 42.8 | 0.07 | ECG alterations (%) | 14.2 | 57.1 | 0.046 | Mean rest LVEF (%) | 53.6 ± 2.2 | 50.4 ± 6.1 | 0.07 | LVEDD (mm) | 47.1 ± 2.3 | 46 ± 2.5 | 50.3 ± 4.0 | 49.4 ± 3.6 | 0.01 | 0.07 | LVEDV (ml) | 129.7 ± 21.0 | 122.7 ± 18.5 | 128.4 ± 42.3 | 116 ± 34.9 | 0.15 | 0.53 | LVESV (ml) | 60.3 ± 10.2 | 55.9 ± 8.8 | 65.7 ± 30.3 | 57.6 ± 23.6 | 0.53 | 0.8 | E wave (cm/sec) | 65.0 ± 7.4 | 84 ± 7.9 | 70.9 ± 20.3 | 97.1 ± 29.6 | 0.31 | 0.12 | A wave (cm/sec) | 61.7 ± 14.2 | 80.4 ± 20.6 | 74.6 ± 11.9 | 91.1 ± 9.2 | 0.01 | 0.08 | E/A | 1.10 ± 0.3 | 1.14 ± 0.5 | 0.96 ± 0.3 | 1.06 ± 0.3 | 0.22 | 0.61 | E′ wave (cm/sec) | 7.4 ± 1.7 | 10.6 ± 1.9 | 7.1 ± 1.6 | 9.6 ± 2.4 | 0.6 | 0.2 | E/E′ | 9.2 ± 2.7 | 7.9 ± 1.6 | 10.0 ± 2.4 | 10.2 ± 2.0 | 0.4 | 0.002 | ΔE′ | 3.14 ± 0.7 | 2.4 ± 1.13 | 0.047 | ET corrected for HR (sec) | 0.43 ± 0.04 | 0.76 ± 0.10 | 0.43 ± 0.90 | 0.58 ± 0.10 | 1 | 0.0001 | DT corrected for HR (sec) | 0.51 ± 0.05 | 0.78 ± 0.09 | 0.59 ± 0.09 | 0.76 ± 0.16 | 0.007 | 0.7 | TP | 17239 ± 4710 | 12206 ± 4413 | 0.007 | ΔTP | 4785 ± 671 | 3359 ± 941 | 0.0001 |
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DP = double product; TP = triple product; LVEF = left ventricular ejection fraction; LVEDD = left ventricular end-diastolic diameter; ET = ejection time; DT = diastolic time.
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