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Coronary artery disease and Left Branch Bundle Block
The presence of a new left branch bundle block (LBBB) may be associated with progressive coronary artery disease (CAD) and if so, it would increase your risk for a heart attack. If the only finding is a LBBB, w/o other evidence of insufficient blood supply to your heart (called ischemia), an alternative next step to prove more CAD is a CTCA. The results could indeed prove you have CAD, but since you are asymptomatic (no angina), that doesn't automatically mean you need a stent or bypass surgery unless you have developed so-called Left main disease.
In asymptomatic patients with heart disease, medical treatment is often superior to stenting (the treatment doctors might recommend if they find CAD).
Hope this helps,
Ask Doctor T. Blog
My 12 yr old son (140cm, 38kg) had a recent episode last month of sudden fainting, hit the back of his head on the concrete at high speed. Was unconscious for under a minute. Went to emergency via ambulance and his ECG showed QT prolonged 492ms. Question 1.Could the knock on his head of caused this ? (he did have a previous episode of unconsciousness but it was...