Random triples
| Subject | Object |
|---|---|
| gptkb:AV_nodal_reentrant_tachycardia | absent or retrograde P waves |
| gptkb:Romano-Ward_syndrome | prolonged QT interval |
| gptkb:Long_QT_syndrome_2 | prolonged QT interval |
| gptkb:AV_nodal_reentrant_tachycardia | gptkb:narrow_QRS_complex_tachycardia |