Ordinary Autonomic Unbalance Can Reflect Diagnosis of Neurally Mediated Reflex Syncope
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- ONISHI Yoshimi
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- MINOURA Yoshino
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- OCHI Akinori
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- INOKUCHI Kouichirou
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- CHIBA Yuta
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- KAWASAKI Shirou
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- MUNETSUGU Yumi
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- ONUMA Yoshimasa
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- KIKUCHI Miwa
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- ONUKI Tatsuya
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- ITO Hiroyuki
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- MIYOSHI Fumito
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- WATANABE Norikazu
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- ADACHI Taro
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- ASANO Taku
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- TANNO Kaoru
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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- KOBAYASHI Youichi
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
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Background: In the present study we investigated autonomic dysfunction using hemodynamics and analysis of heart rate variability (HRV) following ambulatory blood pressure monitoring (APBM) in patients with neurally mediated reflex syncope (NMRS). In addition, we evaluated the usefulness of ABPM for diagnosing NMRS. Methods: In all, 88 consecutive patients with syncope and 12 controls (Group C) were subjected to a head-up tilt (HUT) test (80°, 30 min). If no syncope or presyncope occurred, the HUT test was repeated in the patient group following drug loading (ATP, isoproterenol, and/or isosorbide dinitrate). Results: Forty patients had a positive HUT test, with or without drug loading (Group P) ; the HUT test was negative in 48 patients, even after drug loading. Average daytime systolic and diastolic blood pressure (SBP and DBP, respectively) was significantly lower in Group P than in Group C (P = 0.042 and P = 0.047, respectively). The average standard deviation of SBP at night (SD-SBPNight) was significantly higher in Group P than in Group C (P = 0.004). HRV analysis revealed a significantly higher daytime high-frequency component in Group P than in Group C (P = 0.041). Conclusion: The results of the present study suggest that lower daytime blood pressure and a larger SD-SBPNight, as determined by ABPM, are associated with vagal nerve hyperactivity and sympathetic hypoactivity in patients with NMRS. Thus, an inadequate circadian rhythm in blood pressure variation, as identified by ABPM, may be useful for the diagnosis of NMRS.
収録刊行物
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- The Showa University Journal of Medical Sciences
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The Showa University Journal of Medical Sciences 26 (1), 85-93, 2014
昭和大学学士会
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詳細情報 詳細情報について
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- CRID
- 1390282679348626176
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- NII論文ID
- 130004691848
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- NII書誌ID
- AA10781651
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- ISSN
- 21850968
- 09156380
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
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