title: Ionized calcium levels in coronary sinus blood during coronary angiography: effects of four contrast media.
abstract: The changes in ionized calcium level in the coronary sinus during coronary angiography were compared for four contrast media (meglumine sodium diatrizoate, iohexol, iopamidol, and meglumine sodium ioxaglate) in 44 subjects. Blood samples were collected before and 5, 15, and 30 seconds after injection of contrast medium into the left coronary artery. The hematocrit and ionized calcium level of each specimen were measured. Meglumine sodium diatrizoate produced the largest changes in hematocrit and ionized calcium level. The time-concentration curve of the hematocrit was similar for all four contrast media, but diatrizoate and ioxaglate produced a prolonged decrease of ionized calcium. The cause of this is not clear, but the phenomenon may be related to differences of ionic status among the contrast media. With respect to maintenance of the ionized calcium level, nonionic low-osmolality contrast medium with added calcium may be preferable for coronary angiography.
authors.affiliation: Department of Radiology, Faculty of Medicine, Kyoto University, 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: Torizuka
authors.forename: Y
authors.initials: Y
authors.lastname: Okuno
authors.forename: T
authors.initials: T
authors.lastname: Monji
authors.forename: H
authors.initials: H
authors.lastname: Uwatoko
authors.forename: K
authors.initials: K
authors.lastname: Kitamura
authors.forename: M
authors.initials: M
authors.lastname: Abe
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002118:Calcium / Q000097:blood*; D003287:Contrast Media / Q000009:adverse effects*; D017023:Coronary Angiography; D003331:Coronary Vessels; D003974:Diatrizoate Meglumine / Q000009:adverse effects; D005260:Female; D006400:Hematocrit; D006801:Humans; D007472:Iohexol / Q000009:adverse effects; D007479:Iopamidol / Q000009:adverse effects; D007485:Ioxaglic Acid / Q000009:adverse effects; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media; D003974:Diatrizoate Meglumine; D007472:Iohexol; D007479:Iopamidol; D002118:Calcium; D007485:Ioxaglic Acid