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Long-term orthostatic and bicycle ergometry exercise tests in differential diagnosis of syncopal conditions of unclear origin

机译:长期体位和自行车测功运动测试对起源不明的晕厥病的鉴别诊断

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AIM: To study efficiency of bicycle exercise test and long-term orthostatic test in differential diagnosis of syncopes. MATERIAL AND METHODS: The study included 113 patients suffering from recurrent syncopes of unclear origin. Twelve healthy volunteers were selected for assessment of the tests specificity. All the patients and controls were examined by means of long-term orthostatic test (LTOT) and bicycle exercise test (BET). RESULTS: Specificity of both tests was 100%. In LTOT syncopes were observed in 52 (46%) cases, including vasovagal syncopes (51 patients), epileptic seizure (1 patient). BET induced vasovagal syncopes in 54 (48%) patients. The results of both tests by inducing syncopes coincided in 30 (26%) cases. In 24 (21%) patients syncopes occurred only in BET while LTOT appeared uninformative. In 21 (18.6%) cases syncopes occurred only in LTOT while BET produced a negative result. 38 (34%) patients had syncopes neither in LTOT nor BET. Both tests induced syncopes in 75 (66%) patients. No complications were observed. CONCLUSION: LTOT and BET are safe and complementary methods in differential diagnosis of syncopes.
机译:目的:研究自行车运动测试和长期体位测试在晕厥鉴别诊断中的效率。材料与方法:该研究纳入了113例患有起源不明的晕厥反复发作的患者。选择十二名健康志愿者评估测试特异性。所有患者和对照组均通过长期体位测试(LTOT)和自行车运动测试(BET)进行检查。结果:两种测试的特异性均为100%。在LTOT中,晕厥有52例(46%),包括血管迷走性晕厥(51例),癫痫发作(1例)。 BET诱发了54名(48%)患者的血管迷走性晕厥。两次通过诱发晕厥的测试结果在30例(26%)病例中吻合。在24名患者中(21%),仅在BET中出现晕厥,而LTOT则没有信息。在21例(18.6%)病例中,仅在LTOT中发生晕厥,而BET产生阴性结果。 38名(34%)患者在LTOT和BET中均没有晕厥。两项测试均在75名(66%)患者中诱发晕厥。没有观察到并发症。结论:LTOT和BET是鉴别晕厥的安全和辅助方法。

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