title: Effects of contrast media on the RR and QT interval during coronary arteriography.
abstract: During coronary arteriography, transient prolongation of the RR and QT intervals can be observed to occur. Animal experiments have suggested that low-osmolality contrast media have less effect, but there have been few clinical studies of this phenomenon. We analyzed 95 electrocardiographic records from patients who had undergone coronary arteriography and assessed the maximal prolongation of the RR and QT intervals. The contrast media used for arteriography included meglumine sodium diatrizoate, iopamidol, iohexol, and meglumine sodium ioxaglate. Diatrizoate caused the greatest electrocardiographic changes. Among the low osmolality contrast media, ioxaglate caused the smallest bradycardial effect and iohexol the smallest prolongation of the QT interval. It appears necessary to consider some additional factors for osmolality or ionicity, such as the chemotoxicity of the chemical structure of the iodinated contrast medium moiety, when assessing their potential adverse effect on the cardiac conduction system.
authors.affiliation: Department of Radiology, Kyoto City Hospital, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Mitsumori
authors.forename: K
authors.initials: K
authors.lastname: Hayakawa
authors.forename: T
authors.initials: T
authors.lastname: Soga
authors.forename: M
authors.initials: M
authors.lastname: Maeda
authors.forename: T
authors.initials: T
authors.lastname: Torizuka
authors.forename: Y
authors.initials: Y
authors.lastname: Okuno
authors.forename: T
authors.initials: T
authors.lastname: Misaki
authors.forename: S
authors.initials: S
authors.lastname: Dokoh
mesh_terms: D003287:Contrast Media / Q000009:adverse effects / Q000494:pharmacology*; D017023:Coronary Angiography; D003973:Diatrizoate / Q000494:pharmacology; D004562:Electrocardiography / Q000187:drug effects*; D005260:Female; D006801:Humans; D007472:Iohexol / Q000494:pharmacology; D007479:Iopamidol / Q000494:pharmacology; D007485:Ioxaglic Acid / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies
chemical_list: D003287:Contrast Media; D003973:Diatrizoate; D007472:Iohexol; D007479:Iopamidol; D007485:Ioxaglic Acid