Endoscopy 1999; 31(6): 447-451
DOI: 10.1055/s-1999-50
Original Article
Original Article
Georg Thieme Verlag Stuttgart · New York

Arterial Oxygen Desaturation During Endoscopic Ultrasonography Combined with Gastroscopy: a Safety Evaluation in Out-Patients

 H. Allgayer,  C. Pohl,  W. Kruis
  • Medical Clinic I, Klinikum Karlsruhe, Germany, and Dept. of Internal Medicine, Protestant Hospital, Köln-Kalk, Cologne, Germany
Further Information

Publication History

Publication Date:
31 December 1999 (online)

Introduction

Significant reductions in arterial oxygen saturation (SaO2) have been observed in patients undergoing gastroscopy, colonoscopy or ERCP, especially in those at risk [1] [2] [3] [4] [5] [6]. Corresponding data for endoscopic ultrasonography (EUS) are not available, but knowledge of potential effects of EUS on SaO2 is important in view of the rising safety standards and the growing numbers of EUS examinations being carried out, particularly on an outpatient basis [7] [8] [9] [10] [11]. To obtain this information, we continuously monitored the time-related SaO2 course, pulse rates, and blood pressure in outpatients referred for EUS in order to assess whether EUS in combination with a prior gastroscopy has additional decreasing effects on SaO2. We were also interested in finding out whether it is possible to identify patients who will be particularly prone to develop relevant SaO2 desaturation (< 90.0 %) during the procedures, based on their baseline (pre-procedure) arterial oxygen saturation. EUS is usually combined with gastroscopy for better location and visualization of target lesions, due to the superior optical qualities of conventional instruments compared to EUS.

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H. AllgayerM.D. 

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