Firefighter Cardiovascular Mortality and Exertion
topic
Cardiovascular disease accounts for approximately 45 percent of on-duty firefighter fatalities in the United States, with the combination of high metabolic rate from firefighting activity, heat stress from clothing and environment, sympathetic nervous system activation from psychological stress, and pre-existing coronary artery disease creating an acute cardiovascular crisis risk during and immediately after firefighting operations that clothing-induced heat stress amplifies through increased cardiac output demands for skin blood flow.
Role
Establishes the medical evidence base for the critical importance of physiological performance optimisation in firefighting clothing design, with cardiovascular mortality data demonstrating that physiological heat stress from clothing is not merely a comfort issue but a lethal risk factor for the cardiovascular events that kill more firefighters than burn injuries, justifying the investment in improved clothing breathability and lighter weight systems that reduce heat stress burden at equivalent thermal protection.