Katz A, Biron A, Ovsyshcher E, Porath A
Department of Cardiology, Soroka University Hospital, Beer Sheva, Israel.
Isr Med Assoc J. 2000 Jan;2(1):17-21.
Previous studies have documented an increased incidence of cardiac mortality and sudden death during winter months.
To evaluate seasonal variation in sudden death in a hot climate such as the desert region of southern Israel.
We analyzed the files of 243 consecutive patients treated for out-of-hospital sudden death by the Beer Sheva Mobile Intensive Care Unit during 1989-90. Daily, monthly and seasonal incidence of sudden death was correlated with meteorological data, including temperature, heat stress, relative humidity and barometric pressure.
The seasonal distribution of sudden death was 23% in spring, 21% in summer, 25% in autumn and 31% in winter (not significant). In patients with known heart disease there were more episodes of sudden death in cold weather (< 15.4 degrees C) than hot (> 34.2 degrees C) (16 vs. 3, P < 0.05). Resuscitation was less successful in cold compared with hot weather (28 vs. 11, P < 0.05). Of patients older than 65 years, 11 sustained sudden death when heat stress was below 12.4 degrees C compared to 2 patients when heat stress was above 27.5 degrees C (P = 0.05).
Despite the warm desert climate, there were more cases of sudden death in older patients and in those with known heart disease during the winter season and on particularly cold days.
既往研究记录了冬季心脏死亡率和猝死发生率的增加。
评估以色列南部沙漠地区等炎热气候下猝死的季节性变化。
我们分析了1989 - 1990年期间贝尔谢巴移动重症监护病房连续治疗的243例院外猝死患者的病历。猝死的每日、每月和季节性发生率与气象数据相关，包括温度、热应激、相对湿度和气压。
猝死的季节分布为春季23%，夏季21%，秋季25%，冬季31%（无显著性差异）。已知患有心脏病的患者在寒冷天气（<15.4摄氏度）比炎热天气（>34.2摄氏度）发生猝死的情况更多（16例对3例，P<0.05）。与炎热天气相比，寒冷天气下复苏成功率较低（28例对11例，P<0.05）。65岁以上的患者中，热应激低于12.4摄氏度时有11例发生猝死，而热应激高于27.5摄氏度时为2例（P = 0.05）。
尽管沙漠气候温暖，但老年患者和已知患有心脏病的患者在冬季以及特别寒冷的日子里猝死病例更多。
