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Valsalva analysis in patients with tVVS and controls
| Parameter | Syncope (n = 21) |
No syncope (n = 30) | p-value |
|---|---|---|---|
| RR minimum phase 2 (ms) | 710.7 ± 98.4 | 719.7 ± 125.0 | 0.78 |
| RR maximum phase 4 (ms) | 936 ± 166.2 | 959.5 ± 151.2 | 0.60 |
| Valsalva ratio | 1.3 ± 0.1 | 1.4 ± 0.2 | 0.53 |
| Tachycardia ratio | 0.8 ± 0.2 | 0.8 ± 0.1 | 0.45 |
| Bradycardia ratio | 1.0 ± 0.3 | 1.1 ± 0.2 | 0.26 |
RR time between two successive R-waves
