Sudden Death
<p class="default">Principal Evidence is from CIRCULATION Sept 12 2006... get this!  study of SUDDEN DEATH.</p>
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this was a meticulous study  (reviewed in Harvard Heart Letter in Dec 2006 which I now summarize)
by German researchers.  Key was to interview family members on scene.
406 cases of arrest.</p>
<p>
Warning signs were surprisingly common.  CP, sob, N/V, diz  sometimes HOURS before.
In 90% of cases  symptoms lasted more than 5 mnutes.
Only 25% had true out of the blue arrests with no prior sxs.</p>
<p>
Most had had prior attaacks.  <b>Two-thirds of those who collapsed had been prev dx'd with heart disease</b> and
had survived prior arrest or had angina or other signs of ht dis.</p>
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