In the 24hrs before a heart catheter I was given 7catapress, 2lopressor, lisinoprill, lasix, (furosemide) potassium, could this induce vfib?

Myocardial ischemia. Ventricular fibrillation is a heart rhythm problem that occurs when the heart beats with rapid, erratic electrical impulses, making it is unable to pump efficiently. It is usually associated with myocardial ischemia ( heart attack).