Journal of Gastroenterology

, Volume 43, Issue 1, pp 38–44 | Cite as

Autonomic nervous function in upper gastrointestinal endoscopy: A prospective randomized comparison between transnasal and oral procedures

  • Akihiro Mori
  • Noritsugu Ohashi
  • Hideharu Tatebe
  • Takako Maruyama
  • Hiroshi Inoue
  • Shoudou Takegoshi
  • Toshiharu Kato
  • Masataka Okuno
Article

Abstract

Background. Transnasal esophagogastroduodenoscopy (EGD) using an ultrathin endoscope is less stressful to the cardiovascular system with less elevation of systolic blood pressure (BP) than oral procedures. To elucidate the mechanism of such beneficial cardiovascular responses, we performed a prospective patient-centered randomized study in which BP and pulse rate (P), as well as autonomic nervous functions, were estimated during transnasal EGD compared with those in oral procedures using the same ultrathin endoscope. Methods. The study involved 781 patients, among whom 55 and 56 cases were assigned to transnasal and oral EGD groups, respectively. The autonomic nervous responses were determined employing power spectral analysis (PSA) of heart-rate variations on electrocardiogram. PSA data were based on two peaks in lowfrequency (LF) and high-frequency (HF) ranges. HF power and the ratio of LF power/HF power represented parasympathetic and sympathetic nervous activities, respectively. Results. Our study confirmed the lesser elevation of BP and P in patients undergoing transnasal EGD than in those undergoing oral procedures. PSA revealed a lower increase in LH power/HF power in transnasal EGD than in oral EGD. However, both endoscopic procedures equally suppressed HF power. Significant correlations were found between the parameters of cardiovascular response (P and BP) and autonomic functions (LF power/HF power ratio and HF power). Conclusions. This is the first study demonstrating less sympathetic stimulation in patients undergoing transnasal EGD, leading to lesser elevation of BP and P.

Key words

transnasal endoscopy autonomic nervous function blood pressure pulse rate cardiovascular stress 

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Copyright information

© Springer Japan 2008

Authors and Affiliations

  • Akihiro Mori
    • 1
  • Noritsugu Ohashi
    • 1
  • Hideharu Tatebe
    • 1
  • Takako Maruyama
    • 1
  • Hiroshi Inoue
    • 1
  • Shoudou Takegoshi
    • 1
  • Toshiharu Kato
    • 2
  • Masataka Okuno
    • 1
  1. 1.Department of GastroenterologyInuyama Chuo HospitalGoromuru, Inuyama, AichiJapan
  2. 2.Department of Laboratory MedicineInuyama Chuo HospitalAichiJapan

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