Related Experiment Video
Updated: Jan 27, 2026

External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
Novel mainstream capnometer system is safe and feasible even under CO2 insufflation during ERCP-related procedure: a
Yoichi Takimoto1, Eisuke Iwasaki1, Tatsuhiro Masaoka1
1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.
Background And Aims:
There is a need to safely achieve conscious sedation during endoscopic retrograde cholangiopancreatography (ERCP). We evaluated the safety and feasibility of a mainstream capnometer system to monitor apnoea during ERCP under CO2 insufflation.
Methods:
Non-intubated adult patients undergoing ERCP-related procedures with intravenous sedation were enrolled. End-tidal CO2 (EtCO2) was continuously monitored during the procedure under CO2 insufflation using a mainstream capnometer system, comprising a capnometer and a specially designed bite block for upper gastrointestinal endoscopy and ERCP. Oxygen saturation (SpO2) was also monitored continuously during the procedure. In this study, we evaluated the safety and feasibility of the capnometer system.
Results:
Eleven patients were enrolled. Measurement of EtCO2 concentration was possible from the beginning to the end of the procedure in all 11 cases. There was no measurement failure, dislocation of the bite block, or adverse event related to the bite block. Apnoea linked to hypoxaemia occurred five times (mean duration, 174.4 s).
Conclusion:
This study confirmed that apnoea was detected earlier than when using a percutaneous oxygen monitor. Measurement of EtCO2 concentration using the newly developed mainstream capnometer system was feasible and safe even under CO2 insufflation.
Related Concept Videos
Endoscopic Procedures V: ERCP
Patient...
Pilot and Numeric Relaying
Guidelines and Strategies for Safe Computer Charting
Maintain Confidentiality and Security:
Blind Procedures
Design Example: Calculating Safe Diameter for Wind-Exposed Disc
Handwashing II: Pre-procedure and Initial Procedure Steps
The hand washing procedure itself includes the following steps. First, cover cuts, if any, on hands with a waterproof dressing. Cuts and abrasions can become contaminated with bacteria hindering the ability to clean the area thoroughly. In addition, repeated hand washing can worsen an injury. The nails must be short and clean, without nail...

