This is short for coronary thrombosis, which is the medical term for heart attack, and it occurs when a branch of a coronary artery gets blocked, which stops oxygenated blood reaching the heart muscles, so affecting the operation of the heart.
Check Also
Ganga Mahotsav: Varanasi, Uttar Pradesh 5 Day Cultural Festival
Ganga Mahotsav is a five day event celebrated on the banks of the river Ganges …