Abstract
Percutaneous coronary intervention (PCI) is one of the principal treatments of acute coronary syndrome (ACS), including acute myocardial infarction (AMI). This treatment largely expanded our knowledge on the pathophysiology of AMI and related coronary pathologies. Recent studies found a significant relationship of the timing of ACS with environmental physical activity: solar (SA), geomagnetic (GMA) and cosmic ray (CRA) activity. The aim of this study was to examine if the interrelationship of two principal culprit arteries, left anterior descending (LAD) and right coronary artery (RCA), are involved in the pathogenesis of AMI in different daily levels of GMA and CRA. Patients undergoing PCI for AMI on the day of symptoms of the disease (n=2011, 79.9% males) in the Rabin Medical Center in the years 2000-2010 were studied. The culprit arteries, LAD and RCA, correlated to AMI in zero and I0-IV0 of daily GMA and inversely to GMA related CRA (measured by neutron activity on the earth surface) and their ratio was compared. LAD (45.0%) and RCA (35.7%) were the main culprit arteries in AMI. LAD/RCA ratio increased inversely to GMA (zero=IV0, r=-0.94, p=0.017) and in correlation with daily neutron activity for LAD (r=0.97, p=0.03) and RCA (r=0.95, p=0.04). LAD/RCA ratio was 1 in IV0 of GMA (28% increase) and steadily increased to 1.62 (62% difference) at zero GMA (r=-0.94, p=0.0117), and increasing neutron activity was accompanied by increasing LAD involvement as a culprit artery in AMI. High daily neutron activity and low GMA are accompanied by increasing LAD as a culprit artery in AMI. The possible mechanisms of this finding are discussed.
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