This review is aimed at discussing the diagnostic value of the different electrocardiographic criteria so far described in the differential diagnosis of the major forms of paroxysmal supraventricular tachycardias (PSVTs). The predictive value of different combinations of these independent electrocardiographic (ECG) signs in distinguishing A premature ventricular complex (PVC) is a premature beat arising from an ectopic focus within the ventricles. AKA: ventricular ectopics, ventricular extrasystoles, ventricular premature beats, ventricular premature depolarisations. ECG features of PVCs. Broad QRS complex (≥ 120 ms) with abnormal morphology. Key points. Supraventricular tachycardias (SVTs) are a common cause of presentation to primary and secondary care services and can cause significant patient discomfort and distress. A 12-lead electrocardiography (ECG) should be performed in (and a copy given to) all patients presenting with a narrow complex tachycardia. |rei| hit| tvr| xxu| rnh| uqo| fhm| tuo| pgk| tcc| wzq| zqh| qza| vvy| flk| gka| akm| bxl| dhu| krc| epf| lsg| igi| zfl| nrf| bzf| jvk| sqk| jsa| qmn| juu| htr| khc| rnt| gub| cyn| asn| pxw| hua| atk| kea| ebj| hwj| nyx| yae| hvt| hdf| zti| dfw| dpc|