I don't think you need "vast amounts" of cocaine to die from sudden cardiac death. Cocaine is a stimulant that increases risk of sudden cardiac death (which is a well known fact).
"Intake of the drug increased the odds of dying suddenly from cardiac arrest by more than 300 percent."
http://www.elementsbehavioralhealth...e-major-risk-factor-for-sudden-cardiac-death/
"Intake of the drug increased the odds of dying suddenly from cardiac arrest by more than 300 percent."
http://www.elementsbehavioralhealth...e-major-risk-factor-for-sudden-cardiac-death/