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Estimating the rate of acute adverse reactions to non-ionic low-osmolar contrast media: a systematic review and meta-analysis.

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Title: Estimating the rate of acute adverse reactions to non-ionic low-osmolar contrast media: a systematic review and meta-analysis.
Authors: Wei, Yuguo1 (AUTHOR), Jiang, Xinchao1 (AUTHOR), Hibberd, Mark2 (AUTHOR), Sampedro, Alexis3 (AUTHOR), Rautenbach, Jeannette4 (AUTHOR) jeannette.rautenbach@gehealthcare.com
Source: European Radiology. Oct2025, Vol. 35 Issue 10, p6240-6249. 10p.
Subjects: Safety, Iohexol, Radiographic contrast media, Drug side effects, Contrast media, Diagnostic imaging
Abstract: Objectives: This systematic review and meta-analysis aimed to assess and compare acute adverse reactions (AAR) rates among non-ionic low-osmolar contrast media (LOCM), examining administration routes and severity-specific impact on AAR rates. Materials and methods: A PubMed and Cochrane Library search identified studies published between January 1989 and March 2024. Inclusion criteria focused on studies with > 100 adult patients who received intra-arterial or intravenous LOCM (iobitridol, iohexol, iomeprol, iopamidol, iopromide, and ioversol). Duplicate reports and studies with insufficient information were excluded. Data extraction and quality assessment followed PRISMA guidelines and the Newcastle Ottawa Scale. Statistical analyses were performed using R software, including random effects, meta-regression, and sub-group analysis. Results: After excluding duplicates and non-compliant studies, 32 peer-reviewed articles of initially 6701 identified studies, were included in the final analysis. The pooled overall AAR rate was 0.73%, with ioversol showing the lowest rate (0.34%). From all studies, pooled rates (random effects model) of moderate and severe AARs were 0.10% and 0.014% (p < 0.01), with the lowest rates for iohexol (0.05% and 0.008%, respectively). The highest overall, moderate, and severe AAR rates were seen with iomeprol (1.38%, 0.27%, and 0.040%, respectively). LOCM type (p < 0.0001), study design (p = 0.0001), and injection route (p = 0.034) significantly influenced the overall AAR rate. In contrast, the study center number (p = 0.698), the country where the study was performed (p = 0.808), and the type of reaction (hypersensitivity vs hypersensitivity plus physiological reactions; p = 0.178) did not. Conclusion: AAR rates were low but indicated significant differences between LOCM; iohexol and ioversol demonstrated the overall most favorable safety profiles. Key Points: QuestionKnowledge about AAR is crucial for patient safety, but comprehensive data on the safety profiles of non-ionic LOCM is lacking. FindingsIoversol showed the lowest overall AAR rate; iohexol demonstrated the lowest moderate/severe AAR. Study design, LOCM type, and injection route influenced AAR rates. Clinical relevanceThis meta-analysis provides evidence for differences in non-ionic LOCM safety profiles, particularly for moderate and severe AARs. These can guide clinicians in selecting contrast agents, aiming to further reduce risks, and improve patient safety in diagnostic imaging. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Estimating the rate of acute adverse reactions to non-ionic low-osmolar contrast media: a systematic review and meta-analysis.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Wei%2C+Yuguo%22&quot;&gt;Wei, Yuguo&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Jiang%2C+Xinchao%22&quot;&gt;Jiang, Xinchao&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Hibberd%2C+Mark%22&quot;&gt;Hibberd, Mark&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Sampedro%2C+Alexis%22&quot;&gt;Sampedro, Alexis&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Rautenbach%2C+Jeannette%22&quot;&gt;Rautenbach, Jeannette&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; jeannette.rautenbach@gehealthcare.com&lt;/i&gt;
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Radiology%22&quot;&gt;European Radiology&lt;/searchLink&gt;. Oct2025, Vol. 35 Issue 10, p6240-6249. 10p.
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  Data: Objectives: This systematic review and meta-analysis aimed to assess and compare acute adverse reactions (AAR) rates among non-ionic low-osmolar contrast media (LOCM), examining administration routes and severity-specific impact on AAR rates. Materials and methods: A PubMed and Cochrane Library search identified studies published between January 1989 and March 2024. Inclusion criteria focused on studies with &gt; 100 adult patients who received intra-arterial or intravenous LOCM (iobitridol, iohexol, iomeprol, iopamidol, iopromide, and ioversol). Duplicate reports and studies with insufficient information were excluded. Data extraction and quality assessment followed PRISMA guidelines and the Newcastle Ottawa Scale. Statistical analyses were performed using R software, including random effects, meta-regression, and sub-group analysis. Results: After excluding duplicates and non-compliant studies, 32 peer-reviewed articles of initially 6701 identified studies, were included in the final analysis. The pooled overall AAR rate was 0.73%, with ioversol showing the lowest rate (0.34%). From all studies, pooled rates (random effects model) of moderate and severe AARs were 0.10% and 0.014% (p &lt; 0.01), with the lowest rates for iohexol (0.05% and 0.008%, respectively). The highest overall, moderate, and severe AAR rates were seen with iomeprol (1.38%, 0.27%, and 0.040%, respectively). LOCM type (p &lt; 0.0001), study design (p = 0.0001), and injection route (p = 0.034) significantly influenced the overall AAR rate. In contrast, the study center number (p = 0.698), the country where the study was performed (p = 0.808), and the type of reaction (hypersensitivity vs hypersensitivity plus physiological reactions; p = 0.178) did not. Conclusion: AAR rates were low but indicated significant differences between LOCM; iohexol and ioversol demonstrated the overall most favorable safety profiles. Key Points: QuestionKnowledge about AAR is crucial for patient safety, but comprehensive data on the safety profiles of non-ionic LOCM is lacking. FindingsIoversol showed the lowest overall AAR rate; iohexol demonstrated the lowest moderate/severe AAR. Study design, LOCM type, and injection route influenced AAR rates. Clinical relevanceThis meta-analysis provides evidence for differences in non-ionic LOCM safety profiles, particularly for moderate and severe AARs. These can guide clinicians in selecting contrast agents, aiming to further reduce risks, and improve patient safety in diagnostic imaging. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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