Cardiac and hemodynamic tolerability of iodinated contrast media in the anesthetized rat.
OBJECTIVE
The study was designed to compare the hemodynamic effects of 11 iodinated contrast media (CM), including ionic (diatrizoate, ioxaglate), nonionic monomeric (iohexol, iopromide, iopamidol, iopentol, ioversol, iomeprol, ZK 139129), and nonionic dimeric (iotrolan, iodixanol) compounds.


METHODS
Following left ventricular bolus injection of 1.2 g I/kg body weight in anesthetized rats, cardiohemodynamic parameters were measured.


RESULTS
Compared with the control group, except for blood pressure (BP), all CM showed a similar response regarding the direction of the cardiohemodynamic changes after CM injection. A biphasic change in BP was observed for diatrizoate and iodixanol, whereas all other CM showed a transient increase in BP being most pronounced for ioxaglate. No arrhythmias were detected. The increase in LVEDP was lowest for the isotonic dimeric CM iotrolan and iodixanol.


CONCLUSIONS
Only mild transient side effects were observed. Low osmolar, especially isotonic, dimeric CM show a clear benefit regarding cardiovascular side effects.
Muschick
P
P
Research Laboratories of Schering AG, Berlin, Germany.
Wehrmann
D
D
Schuhmann-Giampieri
G
G
Krause
W
W
D000818:Animals; D003287:Contrast Media / Q000633:toxicity*; D003973:Diatrizoate / Q000633:toxicity; D004305:Dose-Response Relationship, Drug; D006439:Hemodynamics / Q000187:drug effects*; D007485:Ioxaglic Acid / Q000633:toxicity; D008297:Male; D011859:Radiography; D051381:Rats; D017208:Rats, Wistar; D016277:Ventricular Function, Left / Q000187:drug effects*
D003287:Contrast Media; D003973:Diatrizoate; D007485:Ioxaglic Acid