Table 2.
ECG characteristics of five patients with Brugada syndrome.
| Features | R-R interval (s) | P wave (mV, s) | P-R interval (s) | QRS complex (mV, s) | ST segment (s) | T wave (mV) | U wave | QT interval (s) | RV5/SV1 (mV) | RV5 + SV1 (mV) |
|---|---|---|---|---|---|---|---|---|---|---|
| Normal amplitude | — | 0.25 | — | 1.60 for R peak | — | 0.1–0.8 | May not be observed because of its small size | — | ＜2.50/1.00 | ＜3.50 |
| Normal duration | 0.6–1.2 | 0.08–0.11 | 0.12–0.20 | 0.06–0.10 | 0.05–0.155 | 0.05–0.25 | Unknown | 0.35–0.44 | — | — |
| I1 | 0.72 | 0.102 | 0.198 | 0.120 | 0.082 s | 0.139 s | No | 0.338 | 2.12/0.93 | 3.05 |
| II2 | 0.72 | 0.094 | 0.174 | 0.104 | 0.082 s | 0.149 s | No | 0.354 | 1.28/0.05 | 1.33 |
| II3 | 0.85 | 0.098 | 0.152 | 0.116 | 0.036 s | 0.106 s | No | 0.334 | 1.37/0.00 | 1.37 |
| III2 | 0.88 | 0.114 | 0.186 | 0.138 | 0.152 s | 0.157 s | No | 0.396 | 1.25/0.00 | 1.25 |
| III4 | 1.1 | 0.098 | 0.154 | 0.100 | 0.154 s | 0.164 s | No | 0.394 | 1.49/0.76 | 2.25 |