Kleĭmenova N G, Kozyreva O V, Breus T K, Rapoport S I
Biofizika. 2007 Nov-Dec;52(6):1112-9.
The analysis of the ambulance calls in Moscow, related to myocardial infarction (85.000 events), sudden death (71.700 events), and hypertension crises (165.500 events) over the period of 1979-1981 demonstrated their clear seasonal variations with a profound summer minimum and a winter maximum. The same results were obtained in the analysis of statistical monthly data on sudden death from infarction in Bulgaria over the period of 15 years (1970-1985). However, there are a great number of clinical and statistical studies confirming the rises in the incidence of myocardial infarction, hypertension crise, and sudden death during geomagnetic disturbances, which have maximum occurrence near equinox, not in winter. In order to explain this contradiction, we suggested that one of critical factors that affect the human cardiovascular system is geomagnetic micropulsations Pc1 having the frequency comparable with the frequency of heart rate beatings and winter maximum in their occurrence. The results of a comparative analysis of data of ambulance calls in Moscow related to myocardial infarction and sudden death and the catalog of Pc1 observations at the geophysical observatory "Borok" (Yaroslavl region) are presented. It is shown that in approximately 70% of days with an anomalously large number of ambulance calls related to myocardial infarction, Pc1 micropulsations have been registered. The probability of simultaneous occurrence of myocardial infarction and Pc1 in the winter season was 1.5 times greater than their accidental coincidence. Moreover, it was found that in winter the effects of magnetic storms and Pc1 IM(A) were much higher than in summer. We suggested that one of possible reasons for the seasonal variations in the occurrence of myocardial infarction is an increase in the production of the pineal hormone melatonin in winter which leads to an unstable state of the human organism and an increase in its sensitivity to the effect of geomagnetic pulsations.
对1979 - 1981年期间莫斯科与心肌梗死（85000起事件）、猝死（71700起事件）和高血压危象（165500起事件）相关的救护车呼叫记录进行分析，结果显示这些疾病具有明显的季节性变化，夏季发病率极低，冬季发病率极高。对保加利亚15年（1970 - 1985年）期间梗死性猝死的月度统计数据进行分析，也得到了相同结果。然而，大量临床和统计研究证实，心肌梗死、高血压危象和猝死的发病率在地磁扰动期间会上升，地磁扰动在春分附近出现的频率最高，而非冬季。为了解释这一矛盾，我们提出影响人体心血管系统的关键因素之一是地磁微脉动Pc1，其频率与心率跳动频率相当，且在冬季出现频率最高。本文展示了对莫斯科与心肌梗死和猝死相关的救护车呼叫数据，以及地球物理观测站“博罗克”（雅罗斯拉夫尔地区）的Pc1观测目录进行对比分析的结果。结果表明，在与心肌梗死相关的救护车呼叫数量异常多的日子里，约70%的时间记录到了Pc1微脉动。冬季心肌梗死与Pc1同时出现的概率比偶然巧合的概率高1.5倍。此外，还发现冬季磁暴和Pc1 IM(A)的影响比夏季高得多。我们认为，心肌梗死发病率季节性变化的一个可能原因是冬季松果体激素褪黑素分泌增加，这会导致人体机体状态不稳定，并增加其对地磁脉动影响的敏感性。
