Sudden cardiac death (SCD) is the abrupt cessation of cardiac activity leading to unresponsiveness and no signs of respiration or circulation that cannot or is not corrected. In addition to well-established risk factors which include advancing age, male sex and structural heart disease, observational data indicate that there is a wider range of psychosocial aetiological factors which have been under researched, and for which causative mechanisms remain unclear. These may include environmental stress imposed by famine, war, earthquakes and social upheaval which have been observed to coincide with transient increases in SCD.1 Community-based observational studies also indicate a potential relationship between anxiety and SCD, and there may even be a circadian and seasonal component to SCD risk.2 Social factors, including low educational attainment, life stressors, such as bereavement, unemployment and divorce, and social isolation, have also been linked to cardiovascular mortality and SCD. The role of environmental air pollution on respiratory and cardiovascular health is under increasing scrutiny, and was recorded as a cause of death in a landmark UK case in 2020 following a fatal case of acute asthma in childhood. Cigarette smoking confers a substantial risk of SCD, which …

中文翻译：

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呼吸功能受损会导致心源性猝死吗？

心源性猝死 (SCD) 是心脏活动的突然停止，导致反应迟钝，并且没有呼吸或循环的迹象，无法或未得到纠正。除了成熟的风险因素（包括年龄增长、男性和结构性心脏病）外，观察数据表明，还有更广泛的社会心理病因因素正在研究中，其致病机制仍不清楚。这些可能包括饥荒、战争、地震和社会动荡造成的环境压力，据观察这些压力与 SCD 的短暂增加相吻合。1 基于社区的观察研究也表明焦虑与 SCD 之间存在潜在关系，甚至可能存在昼夜节律SCD 风险的季节性因素。2 社会因素，包括受教育程度低、生活压力源，例如丧亲之痛、失业和离婚以及社会孤立，也与心血管死亡率和 SCD 相关。环境空气污染对呼吸系统和心血管健康的作用正受到越来越多的审查，并被记录为 2020 年英国发生的一起具有里程碑意义的儿童急性哮喘病例后的死亡原因。吸烟会增加患 SCD 的风险，这...