Abstract
Purpose
The ability to perform abdominal ultrasonography after esophagogastroduodenoscopy (EGD) is hypothesized to improve examination efficiency. Therefore, we performed abdominal ultrasonography before and after EGD to verify the effects of EGD on abdominal ultrasonographic imaging efficiency.
Methods
We performed abdominal ultrasonography before, immediately after, 30 min after, and 60 min after EGD with carbon dioxide (CO2) insufflation in 23 consecutive patients who visited our center between July 2015 and December 2016. We examined the visualization status of the head, body, and tail of the pancreas; extrahepatic bile duct; and inferior pole of the right kidney.
Results
The visualization status of the pancreas decreased immediately after EGD in approximately 50% of patients; however, at 30 min and after, the status was almost the same as for imaging performed before endoscopy. Visualization of the extrahepatic bile duct decreased slightly immediately after the procedure; however, 30 min and later, it was almost the same as before endoscopy. The inferior pole of the right kidney was observable from the dorsal side and could be visualized at all examination points in all patients.
Conclusion
There was no difficulty in performing abdominal ultrasonography at 30 min or later following EGD with CO2 insufflation. Additionally, visualization of the head, body, and tail of the pancreas as well as the extrahepatic bile duct was improved in some patients.
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Acknowledgements
We are deeply indebted to the Tokyo Metropolitan Cancer Detection Center for the grant to conduct the present study. In addition, we sincerely thank Kumiko Sukegawa of the Department of Clinical Laboratory, Tama-Hokubu Medical Center, for her advice.
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Hiroshi Nakagawara, Hajime Takahashi, Masahiro Ogawa, Yuki Endo, Yukinobu Watanabe, Midori Hirayama, Hitomi Ryuzaki, Mitsuhiko Moriyama, and Yosuke Iriguchi declare that there are no conflicts of interest regarding the publication of this paper.
Ethical statement
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. This study was approved by the Ethical Review Board of Tokyo Metropolitan Cancer Detection Center (No. H27-6). Informed consent to be included in the study was obtained from all patients.
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Nakagawara, H., Takahashi, H., Ogawa, M. et al. The influence of esophagogastroduodenoscopy using carbon dioxide insufflation on abdominal ultrasonographic imaging efficiency. J Med Ultrasonics 47, 445–451 (2020). https://doi.org/10.1007/s10396-020-01024-8
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DOI: https://doi.org/10.1007/s10396-020-01024-8