Table 1.
Demographic and clinical characteristics of study sample.
| Parameter | All patients (n = 127) | Endpoint | ||
|---|---|---|---|---|
| SCA (n = 22,17%) | NSCD (n = 18,14%) | Survivors (n = 87, 69%) | ||
| Clinical parameters | ||||
| Age (years) | 66.6 ± 12.0 | 65 ± 8 | 73 ± 10* | 66 ± 13 |
| Sex (male) | 117 (92%) | 22 (100%) | 17(94%) | 78 (90%) |
| LV ejection fraction (%) | 28±9 | 26 ± 8 | 25 ± 11 | 29 ± 9 |
| LVEDV index (ml/m2) | 90 ± 31 | 114±20*** | 96 ± 34 | 82 ± 29 |
| Total D-M (% of LV) | 27 ± 12 | 32 ± 10* | 27 ± 13 | 0.26 ± 0.11 |
| Viable D-M (%of LV) | 7±5 | 9±5 | 8±6 | 0.07 ± 0.05 |
| Infarcted myocardium (% of LV) | 20 ± 9 | 21 ± 7 | 19±8 | 0.21 ± 0.10 |
| ECG parameters | ||||
| Average heart rate (bpm) | 71 ± 10 | 74 ± 11 | 68 ± 7 | 71 ± 10 |
| SDNN (ms) | 45.6 ± 22.1 | 48 ± 22 | 47 ± 32 | 45 ± 20 |
| RMSSD (ms) | 64.4 ± 47.2 | 83 ± 42** | 79 ± 64 | 57 ± 43 |
| LF power (nu) | 25.8 ± 5.8 | 23 ± 5** | 23 ± 6* | 27 ± 5 |
| HF power (nu) | 38.8 ± 7.2 | 40 ± 7 | 40 ± 8 | 38 ± 7 |
| HRT onset (%) | 0.00 ± 0.02 | 0.00 ± 0.01 | 0.00 ± 0.01 | 0.00 ± 0.02 |
| HRT slope (ms) | 3.1 ± 3.6 | 2.2 ± 2.0 | 2.8 ± 4.6 | 3.5 ± 3.5 |
| AC (ms) | −6.9 ± 4.0 | −6.2 ± 2.7 | −6.6 ± 2.6 | −6.3 ± 2.5 |
| DC (ms) | 3.0 ± 3.3 | 1.7 ± 2.5** | 1.7 ± 3.5* | 3.7 ± 2.6 |
Values are mean ± standard deviation (SD), or n (%).
SCA: Sudden Cardiac Arrest, D-M: Denervated Myocardium, LV: left ventricle, LVEDV: left ventricle end-diastolic volume SDNN: standard deviation of normal-to-normal RR intervals, RMSSD: root mean square of the standard deviation of RR intervals, LF: low frequency, HF: high frequency, HRT: heart rate turbulence, AC: acceleration capacity, DC: deceleration capacity.
*
p < 0.05 against survivors using post-hoc Tukey test.
**
p < 0.01 against survivors using post-hoc Tukey test.
***
p < 0.001 against survivors using post-hoc Tukey test.