Table 1. A collection of cases of the ¡®Spiked Helmet¡¯ sign reported in the literature thus far. Full spreadsheet and references can be found below

From

Helmet Sign on EKG: A Rare Indicator of Poor Prognosis in Critically Ill Patients

Fatai Oluyadi, Pramod Theetha Kariyanna, Apoorva Jayarangaiah, Jessica Celenza-Salvatore, Isabel M. McFarlane

American Journal of Medical Case Reports. 2019, 7(10), 260-263 doi:10.12691/ajmcr-7-10-9