The following is how I communicate with my patients and explain to them about coronary artery disease.

• There are three coronary arteries, which can be equated to three main roads of the city.

• Any road has shops on each side. The coronary artery has the endothelium on the sides.

• There are pavements in front of the shops. The pavements in coronary arteries are called intima-media.

• When the local municipal corporation does not maintain discipline, shopkeepers start encroaching the pavement. In terms of coronary arteries, this is equivalent to intima media thickness.

• The next to follow are temporary encroachments of the road, which is equivalent to several plaques in the coronary arteries.

• Then comes permanent encroachment, which is equivalent to heart plaques.

• With encroachment, the traffic slows down and heavy honking of horns starts. This denotes angina or chest pain.

• When the traffic congestion is heavy, motorists often blow their horn continuously. This can be equated to unstable angina.

• When the traffic stops, but the car engine is still working, this can be likened to a heart attack.

• When the car stops and the engine also stops, this is a cardiac arrest.