Is intraventricular conduction delay ecg serious?

Yes. It reflects the: Internal coordination of ventricular muscle, principally the health & conduction speed of the purkinje fibers responsible. Since the purkinje fibers are within the endocardium & endocardial muscle always has the most tenuous blood supply of all heart muscle, IVCD is commonly the most sensitive sign, on EKG, of ischemic damage, i.e. Heart attack/fibrosis, & far earlier than more accepted EKG signs.

Sometimes: Intraventricular conduction delay (ivcd) refers to a condition in which electrical conduction through the heart muscle is delayed or slowed. It can be seen in a variety of disorders such as myocarditis, cardiomyopathy, ventricular fibrosis, heart failure, a high potassium level, and following a heart attack. Mild ivcd can be seen in normal healthy people as well. Check with your doctor.