Symptoms Of Tetralogy Of Fallot

Loss Of Consciousness

Loss of consciousness as a symptom of tetralogy of Fallot is a result of a lack of oxygen to the brain. Though fainting happens quickly, there are signs it is about to occur. The child in question may be pale, sweating, and generally weak. They may also feel nauseated or have blurred vision and a rapid heartbeat and breathing before they faint. Loss of consciousness is one aspect of what’s called a 'Tet spell,' which occur because of a severe drop in oxygen levels. Besides their loss of breath, the child can also be irritable and cyanotic.