Abstract

In recent years, many studies were published describing a wide scope of changes related to extreme (stormy) geomagnetic activity. In some countries, prediction of such days is a part of weather prediction information. A number of risk factors like blood coagulation parameters, arterial blood pressure, inflammation markers, and some blood proteins were changing at days of GMA storms. Concomitant studies were published on an inverse phenomenon-increased cardiovascular event at days of Zero GMA, accompanied by high Space Neutron activity on the Earth’s surface—a marker of high Cosmic Ray activity. The aim of this study was to compare two groups of Acute Cardiovascular Events (ACE)—Acute Myocardial Infarction (AMI) and deaths from Ischemic Heart Disease (IHD) at days of extreme Cosmic Ray (CRA)-Neutron activity. Patients & methods: 4749 days at years 2000-2012 were studied considering ACE in a 3000 bed hospital in Kaunas, Lithuania. Cosmophysical data of this period was obtained from USA, Russia, and Finland. ACE was calculated at day of extreme High levels of CRA and following 48 hours. 13629 AMI and 3128 deaths from IHD were included. Results: It was a significant rise in AMI morbidity at day of high CRA (Neutron) activity (≥9300 imp/min). By analysis for each of gender, and patients age groups that were significant difference of AMI for all patients and male >65 y. old at Neutron activity ≥9400 imp/min (p = 0.048; p = 0.03), both gender > 65 y. old at Neutron activity >9500 (p = 0.078) and female >65 y. at Lag 2 (p = 0.07). For deaths from IHD, it was a significant rise at Neutron activity below 9300 imp/min (662 days (13.8%) were above the average of the full observation time-8935 ± 538.083)). Conclusion: At days of high CRA-Neutron activity, it was significantly more AMI. For IHD mortality was higher, but at lower Neutron activity—closer to average Neutron activity and higher GMA.

Highlights

  • From the first decades of the XX century, Geomagnetic Activity (GMA) was an object for intense research, including both physical parts of the problem and, possible biologic and medical effects [1]-[11]

  • It was shown that GMA storms were linked to a number of cardiovascular risk factors: arterial blood pressure, blood coagulation parameters, inflammation markers, some immunoglobulin fractions changes etc. and Cardiovascular Events (CVE) [6]-[26]; on the other hand, some important human pathology component’s, like Sudden Cardiac Death (SCD)—one of the most frequent sorts of cardiac death for many years showed some “affinity” to low GMA [27]-[32]

  • The aim of this study was to compare the morbidity of Acute Myocardial Infarction (AMI) and mortality from Ischemic Heart Disease (IHD) on days of high Cosmic Ray (CRA) (Neutron) and following 48 hours, taking in account that Neutron activity concomitant with Zero GMA could achieve maximum hours and days after the extreme drop of GMA, and biological effects of extreme high/low GMA could be more prominent at days after the extreme event (28)

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Summary

Introduction

From the first decades of the XX century, Geomagnetic Activity (GMA) was an object for intense research, including both physical parts of the problem and, possible biologic and medical effects [1]-[11]. It was shown that GMA storms were linked to a number of cardiovascular risk factors: arterial blood pressure, blood coagulation parameters, inflammation markers, some immunoglobulin fractions changes etc. It was suggested that Neutrons, raising at low GMA, might be involved in some human pathologies, like Cardiac Arrhythmias—a close predictor and mechanism of SCD [12]-[15] [27]-[33], or be involved in atheroma (atheromatous plaque in the arterial wall) splitting and/or fissuring, the most frequent cause of AMI [34] [35], resulting a blockade of blood supply in the Culprit Artery to the heart muscle and its necrosis (death) with a wide scope of clinical pictures from SCD to routine AMI with many variants of natural history

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