方法：用多导睡眠图监测68例患者，同时行动态血压、动态心电图及冠状动脉造影、磁共振检查。
Methods: The study investigated 68 elderly cases by polysomography randomly, they were examined by blood pressure, dynamic electrocardiogram, coronary arterial radiograph, nuclear magnetic resonance.
方法：用多导睡眠图监测68例患者，同时行动态血压、动态心电图及冠状动脉造影、磁共振检查。
Methods: The study investigated 68 elderly cases by polysomography randomly, they were examined by blood pressure, dynamic electrocardiogram, coronary arterial radiograph, nuclear magnetic resonance.
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