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Published on: January 21, 2018
Contrast media extravasation: manual versus power injector
Tareq Sinan1, Hanaa Al-Khawari, Fayaz A Chishti
1Department of Radiology, Faculty of Medicine, Kuwait University, Kuwait.
Summary
The incidence of contrast media extravasation during CT scans is low, with no significant difference between manual injection and automatic power injector (API) use. Automatic power injectors do not increase complications from low-osmolar nonionic contrast media extravasation.
Area of Science:
- Radiology
- Medical Imaging
- Contrast Media
Background:
- Extravasation of contrast media is a potential complication during contrast-enhanced computerized tomography (CT) scans.
- Low-osmolar nonionic contrast media are commonly used to minimize adverse reactions.
- The method of injection, manual versus automatic power injector (API), may influence extravasation rates and complications.
Purpose of the Study:
- To compare the incidence and complications of extravasation of low-osmolar nonionic contrast media.
- To evaluate the safety of using an automatic power injector (API) versus manual injection for contrast media delivery.
Main Methods:
- Prospective analysis of 3,560 patients undergoing contrast-enhanced abdominal and thoracic CT scans.
- Comparison of extravasation rates and complications between manual injection (920 patients) and API (2,640 patients) groups.
- Analysis of factors including injection rate, cannula insertion, and gauge.
Main Results:
- Overall contrast media extravasation occurred in 11 patients (0.3%).
- Extravasation symptoms were observed in 9 patients (0.3%) in the API group and 2 patients (0.2%) in the manual injection group.
- No soft tissue injury was reported in any patient.
Conclusions:
- The use of an automatic power injector (API) does not significantly increase the incidence of contrast media extravasation.
- Extravasation of low-osmolar nonionic contrast media using an API does not lead to patient morbidity.
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