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首页> 外文期刊>Therapeutic advances in cardiovascular disease. >A heat and moisture mask attenuates cardiovascular stress during cold air exposure
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A heat and moisture mask attenuates cardiovascular stress during cold air exposure

机译：防潮防潮面罩可减轻暴露于冷空气期间的心血管压力

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Exposure to cold has been shown to cause cardiovascular stress and increased morbidity and mortality. Inhalation of cold, dry air can increase blood pressure and induce myocardial ischemia, particularly in people with preexisting hypertensive cardiovascular disease. Face masks that can warm and humidify inhaled cold air may reduce these cold air pressor effects. We compared blood pressure measurements using a heat and moisture exchange mask (HME), a placebo mask (PL), and no mask (NM) in 53 patients with hypertension exposed to a cold chamber environment at ?5°C for 1 h. Blood pressure and heart rate were recorded at baseline, and at 15 min intervals from 0 to 60 min of chamber exposure. All patients were taking antihypertensive medications with drug and dosage determined by their own physicians. Data were analyzed by a one-way analysis of variance test with repeated measures, and significant interactions were analyzed by Fisher’s least significant differences tests. A post hoc subgroup analysis for the effect of age was performed using Wilcoxon matched-pair rank tests. Wearing the HME resulted in significantly lower systolic and mean arterial blood pressures than the PL and NM conditions. Diastolic blood pressures were significantly lower for the HME than the NM, but not the PL condition. Subgroup analyses suggested that the effect of the HME in mitigating systolic blood pressure increase from inhalation of cold air was significantly greater for patients aged 60 years or over than for those under 60 years.
机译：暴露于寒冷会导致心血管压力并增加发病率和死亡率。吸入冷，干燥的空气会导致血压升高并诱发心肌缺血，特别是在患有高血压心血管疾病的人群中。可以对吸入的冷空气进行加湿和加湿的面罩可能会降低这些冷空气升压效果。我们比较了53例在5°C的冷室环境中暴露1h的高血压患者，使用热湿交换面罩（HME），安慰剂面罩（PL）和无面罩（NM）进行的血压测量。在基线以及室暴露时间0至60分钟的15分钟间隔内记录血压和心率。所有患者都在服用降压药，药物和剂量由自己的医生决定。通过单因素方差分析和重复测量来分析数据，并通过Fisher的最小显着性差异测试来分析显着的相互作用。使用Wilcoxon配对对秩检验对年龄的影响进行事后亚组分析。佩戴HME可使收缩压和平均动脉血压明显低于PL和NM状况。 HME的舒张压明显低于NM，但PL则不然。亚组分析表明，对于60岁或60岁以上的患者，HME在缓解因吸入冷空气引起的收缩压升高方面的作用明显大于60岁以下的患者。

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