Drug General Information (ID: DDI25HM6S1)
  Drug Name Ibutilide Drug Info Iodipamide Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antiarrhythmic Agents Ionic Iodinated Contrast Media
  Structure

 Mechanism of Ibutilide-Iodipamide Interaction (Severity Level: Moderate)
     Increased risk of ventricular arrhythmias Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Ibutilide Iodipamide
      Mechanism Prolong QT interval Arrhythmogenic
      Key Mechanism Factor 1
Factor Name Ventricular arrhythmias
Factor Description Ventricular arrhythmias are abnormal heart rhythms that cause your heart's lower chambers to pump blood instead of pumping it. This can limit or stop your heart from supplying blood to your body. While some of these arrhythmias are harmless and do not cause symptoms, others can have serious, even fatal, effects on your body.
      Mechanism Description
  • Increased risk of ventricular arrhythmias by the combination of Ibutilide and Iodipamide 

Recommended Action
      Management Caution is advised if iodine-containing contrast media are used for coronary angiography in patients treated with class IA (e.g., disopyramide, quinidine, procainamide) or class III (e.g., amiodarone, dofetilide, ibutilide, sotalol) antiarrhythmic agents. Increased surveillance and ECG monitoring may be appropriate. Patients who receive outpatient angiographies should be advised to seek medical attention if they experience symptoms that could indicate the occurrence of arrhythmia such as dizziness, palpitations, or syncope.

References
1 Goernig M, Kirmeier T, Krack A, Hartog CS, Figulla HR, Leder U "Iohexol contrast medium induces QT prolongation in amiodarone patients." Br J Clin Pharmacol 58 (2004): 96-98. [PMID: 15206999]