Contrast extravasation on computed tomography angiography in patients with hematochezia or melena: Predictive factors and associated outcomes - 24/02/22
, Ugo Marchese b, c, Eimad Shotar d, Benjamin Chousterman b, e, Maximilien Barret b, f, Raphael Dautry a, Romain Coriat b, f, Alice Kedra a, David Fuks b, c, Philippe Soyer a, b, Anthony Dohan a, b
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Highlights |
• | Extravasation on CT angiography in the setting of hematochezia or melena is especially seen in clinically unstable patients who have received more than two blood units. |
• | Presence of active extravasation on CT angiography in patients with hematochezia or melena leads to more frequent application of a therapeutic procedure. |
• | Presence of active extravasation on CT angiography in patients with hematochezia or melena does not significantly affect patient outcome. |
Abstract |
Purpose |
The purpose of this study was to identify variables associated with extravasation on computed tomography angiography (CTA) in patients with hematochezia/melena and compare the outcome of patients with extravasation on CTA to those without extravasation.
Material and methods |
Ninety-four patients (51 men, 43 women; mean age, 69 ± 16 [SD] years) who underwent CTA within 30 days of hematochezia/melena were included. Variables associated with extravasation on CTA were searched using univariable and multivariable analyses. Outcomes of patients with visible extravasation on CTA were compared with those without visible extravasation.
Results |
One hundred and one CTA examinations were included. Extravasation was observed on 26/101 CTA examinations (26%). At multivariable analysis the need for vasopressor drugs (odds ratio [OR], 7.6; P = 0.040), high transfusion requirements (> 2 blood units) (OR, 7.1; P = 0.014), CTA performed on the day of a hemorrhagic event (OR, 46.2; P = 0.005) and repeat CTA (OR, 27.8; P = 0.011) were independently associated with extravasation on CTA. Extravasation on CTA was followed by a therapeutic procedure in 25/26 CTAs (96%; 26 patients) compared to 13/75 CTAs (17%; 68 patients) on which no extravasation was present (P < 0.001). No patients (0/26; 0%) with contrast extravasation on CTA died while 8 patients (8/61; 13%) without contrast extravasation died, although the difference was not significant (P = 0.099).
Conclusion |
Extravasation on CTA in the setting of hematochezia or melena is especially seen in clinically unstable patients who receive more than two blood units. Presence of active extravasation on CTA leads to more frequent application of a therapeutic procedure; however, this does not significantly affect patient outcome.
Il testo completo di questo articolo è disponibile in PDF.Keywords : Ct-angiography, Diagnostic imaging, Extravasation of contrast media, Gastrointestinal hemorrhage, Multidetector computed tomography
Abbreviations : CI, CTA, GI, HU, OR, SD
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Vol 103 - N° 3
P. 177-184 - marzo 2022 Ritorno al numero
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