Third Degree Heart Block is a slowing of the heartbeat that can cause fatigue, lightheadedness, dizziness, shortness of breath, and even fainting. It is also called complete heart block. It is due a slowing or interruption of the electrical impulses in the heart that normally conduct to cause the heart to beat regularly. It is usually irreversible, and requires a permanent pacemaker to be implanted surgically, which corrects the problem. The only way to fix this slow heartbeat is to implant a pacemaker.
Third degree heart block medical expert witness specialties include cardiology, interventional cardiology, cardiovascular surgery, pathology, cardiac electrophysiology, cardiac anesthesiology, internal medicine, and family medicine.