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A Query About Heart Attacks and Car Accidents?

Question by Danny: A query about heart attacks and car accidents?
a year ago , I suffered a massive MI , which the ER doctors said was caused by blood loss & traumatic stress on my heart.

My question is this: Can someone – after being struck by high-impact speeding auto, get such a heart attack solely from the stress, strain on his heart , thru nervous systems, etc. Or is blood loss of hematocrit the key factor? some claimed that my delay in accepting total transfusion was contributory. But I did accept.with misgivings. They said blood loss was internal from broken bones and hematoma of spleen & liver, not from exterior bleeding. All medical replies gratefully received.
DOUGIE: with my gratitude for a clear reply. The MDs in the ICU “blamed” me for causing my own MI while I pondered the risks of AIDS & Hep C infection. After 45 min. I said “do it” reluctantly. But what about the neurogenic shock component, the autonomic nervous system, and like you said adrenaline surge (I was pedestrian, the car ripped into me like a rocket, throwing my body down to the middle of the block though I crossed at corner. What does that tell us?? And in ICU, I was put on respirator for several days. I ended up with massive infarcts in EVERY WALL of the heart, it doesn’t get much more severe than that. I had an average heart of a 55 yr old, not perfect, but not atrocious, some htn, controlled & no other illness. MDs denied any direct injury to heart area from exterior impact.
anyhow, I now have a 1/3 functional heart in both ventricles, & severe CHF & Edema for the rest of my life. No way to restore normal pumping. Stem cells could do it, but not yet available.

Best answer:

Answer by dougie
Best guess from the info provided:
In hypovolemic shock ( loss of blood volume) the normal/typical responce is for optimal blood pressure to be maintained to the vital organs (heart, brain, kidneys) so I would be inclined to doubt this premise.
Myocardial (heart muscle)and aortic injury from blunt trauma to the chest is plausible and, in fact, common. Although not directly do to a coronary artery occlusion, there is muscle tissue damage from the trauma as in any tissue.
Post mortem exams of WWII pilots that were not able to eject, found that, in great likely hood, they incurred myocardial rupture from the adrenaline surge do to their impending impact/death.
It is well known that myocardial ischemia( lack of effective circulation) can occur from a number of causes that effect a spasm of the coronary artery/arteries: Wether this could be involved in your trauma/treatment is unknown here.
Hope this helps: A very interesting question you pose, but entirely hypothetical.
Hello “Danny”
Understand…I still think that their pemise is the least likely: I don’t understand how they can arive at these presumptions.
Soooooo much occurs during a resucitaive efforts withre spects to medications and treatment, especialyvasopressors. Due to massive soft tissue injury, it would be very difficult to determine the extent of early myocardial injury. BUT the damage already done…….Keep looking for an intervention to increase your “ejection fraction”. You may already be aware of a med, Coreg. This is , ironicaly, a beta-blocker, very difficult to titrate(adjust) but can bring about significant improvement in chronic heart failure .
Are you physicaly active ? There is alwys benefit from a “rehab” effort to encourage “collateral” circulation to injured
myocardium.
No harm in seeking a second opinion Re; management of your failure. Much can be accomplished with medications.
Good luck.

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