ECG monitoring in high voltage electric injury patients presenting with normal ECG: Time to revisit practice?

Advanced Trauma Life Support (ATLS) recommends prolonged ECG monitoring of patients with high risk factors post electric injuries, for detecting and treating potentially life threatening arrhythmias. We hereby present our experience of high voltage electric injuries (HVEI) patients with high risk factors, managed at a level 1 Trauma Centre. Seven patients of high voltage electric injuries with significant burns (BSA > 10% of 2nd degree and above) were admitted over a year (Jan 1, 2019 to Dec 31, 2019), age ranging from 11 to 51 (median 25 yrs). Six out of seven patients (85.7%) were males. Mode of injury was recreational in one, workplace related in one and accidental in five (71.4%). Six patients had entry wounds in extremities, and three underwent emergency limb saving surgery (all escharotomies). Three patients underwent eventual amputation of injured extremity. Serum creatine kinase was monitored in all and multisystem involvement was seen in three patients; one patient (referred) required haemodialysis due to renal failure. There was no mortality. In all cases, 24 h continuous ECG monitoring was carried out as per ATLS and ERC (European Resuscitation Council) guidelines. There was no episode of paroxysmal or persistent rhythm disturbance in our patients during in-hospital stay or follow up. Review of pertinent literature suggests similar experiences of other authors. HVEI is a rare injury and most centres have reported on their experience with small number of patients as in our study. Currently, continuous ECG monitoring post HVEI seems to be the safe practice for patients with cardiac co-morbidities. Further studies are required to find other subsets of HVEI patients likely to benefit from ECG monitoring, and the clinical significance of 'delayed arrhythmias' post HVEI.