Af de 89 patienter, der døde, var 63 blevet fundet med hjertestop, hvilket kan tyde på, at mange af disse patienter næsten med sikkerhed havde lidt uoprettelig skade på hjernen forud for administration af hydroxocobalamin.
Of the 89 patients who died, 63 were initially found in cardiac arrest, suggesting that many of these patients had almost certainly suffered irreparable brain injury prior to administration of hydroxocobalamin.