• Eur J Trauma Emerg Surg · Oct 2024

    Observational Study

    Carbon dioxide angiography during angioembolization for trauma patients increases the detection of active bleeding and leads to reliable hemostasis: a retrospective, observational study.

    • Takaaki Maruhashi, Yutaro Kurihara, Ryoichi Kitamura, Marina Oi, Koyo Suzuki, and Yasushi Asari.
    • Department of Emergency and Critical Care Medicine, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, 252-0375, Kanagawa, Japan. tmaruhasi119@gmail.com.
    • Eur J Trauma Emerg Surg. 2024 Oct 1; 50 (5): 214721542147-2154.

    BackgroundAngiography with carbon dioxide (CO2) has long been used as an alternative when iodine contrast media (ICM) cannot be used due to allergy to iodine or renal dysfunction. Conversely, CO2 angiography is also known as a provocation method for active bleeding. In this study, we examined the efficacy of CO2 angiography in angioembolization (AE) for trauma patients.MethodsThis was a single-center, retrospective, observational study of trauma patients who underwent AE at our facility between January 2012 and April 2023.ResultsWithin this period, 335 AEs were performed. CO2 angiography was performed in 102 patients (30.4%), and in 113 procedures. CO2angiography was used to provoke active bleeding which went undetected using ICM in 83 procedures, and to confirm hemostasis after embolization in 30 procedures. Of the 80 procedures wherein, active bleeding was not detected on ICM, 35 procedures (43.8%) were detected using CO2. The spleen had the highest detection rate of active bleeding by CO2 angiography among the organs. There were 4/102 (1.9%) patients with CO2 contrast who underwent some form of reintervention. Two patients were re-embolized with n-butyl-2-cyanoacrylate because of recanalization after embolization with gelatin sponge. The other two patients had pseudoaneurysm formation which required reintervention, and CO2 angiography was not used. Vomiting was the most common complication of CO2 angiography in 10 patients (9.8%), whereas all were transient and did not require treatment.ConclusionsCO2 angiography of trauma patients may have a better detection rate of active bleeding compared with ICM, leading to reliable hemostasis.© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.

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