We conducted base tilt table test (BTTT) in all patients and additional isoproterenol tilt table test (ITTT) in 18 patients.

所有老年患者全部完成基础倾斜试验，异丙肾上腺素药物倾斜试验18例。

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Method 80 patients with unexplained syncope and 47 healthy controls were tested, including basic tilt table test and isoproterenol tilt table test.

方法80例不明原因晕厥患者为病人组，47例无晕厥病史的健康人作为对照组均采用此试验，包括基础倾斜试验和异丙肾倾斜试验。

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Method 80 patients with unexplained syncope and 47 healthy controls were tested, including basic tilt table test and isoproterenol tilt table test.

方法80例不明原因晕厥患者为病人组，47例无晕厥病史的健康人作为对照组均采用此试验，包括基础倾斜试验和异丙肾倾斜试验。

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