Originally posted by DonnieDarko:
pretty sure heat stroke and heart attack are two different things bro
Did I ever say they were the same in my original post? I merely postulated the likely trigger for death was the heat (the AP article which broke this story specified this in turn led to a heart attack). if u go back, it was you and THEB who brought up the red-flag terms of heart attack & heat stroke
I subsequently merely stated the likelihood a compromised CV system increases the chance for heat stress, but I'll concede in my rush for rebuttal I incorrectly used the umbrella term of heat exhaustion/stroke (I'm sure we can all admit, introducing the term "heat stroke", with its finite requirements yet easy to misconstrue connotations, was unwise to bring into the debate) a predisposed person would likely die from a heart attack first before even hitting the body temperature needed to cause a heat stroke
Even though the medical conditions are distinct from each other, among risk groups (especially the elderly) heat stress and cardiovascular disturbance are acutely interrelated.
prior history/high risk of cardiovascular disease + heat & humidity (even relatively bearable temps for younger/healthier people) = increased susceptibility to heat exhaustion/stroke due to body's inability to handle increased strain to CV system (pumping enough blood to alleviate heat as well as the heart pumping faster/harder trying to compensate for lower blood pressure due to dilated vessels caused by the body trying to regulate its heat) thus eventually leading to rapid breakdown of the cooling mechanism not to mention disturbance of the sodium/potassium pump
Likewise, experiencing heat stress leads in itself to extra exertion of the heart, so that the risk for a heart attack greatly increases (especially as stated, if there are already preexisting risk factors/history) why do you think there are spikes in elderly deaths during heat waves? They are simply more vulnerable. also those taking anticoagulants and beta-blockers (i.e. the same demographic with the risk for heart ailments) succumb more readily to heat-related injuries due to impaired ability to thermoregulate high core heat to the skin/extremities.
Also, to THEB: it's HYPERthermia
[ Edited by Dr_Bill_Walsh on Aug 18, 2014 at 6:31 AM ]