Only cardiac rhythm disturbances are routinely treated in utero, meaning most repair is done after birth.

The issue is to establish the cause of the reduced heart function which can be caused by a heart attack, disease, or rhythm disturbance.

This rhythm disturbance prevent the heart from pumping blood appropriately.

Circadian rhythm disturbances are also frequently found among elderly people who expose themselves less frequently to bright environmental light.

Recent research suggests that circadian rhythm disturbances found in bipolar disorder are positively influenced by lithium's effect on clock genes.

Many experts also suspect that the toxic carbon monoxide makes the heart more irritable, leaving it prone to rhythm disturbances.

More severe complications include hypotension, cardiac rhythm disturbances, hallucinations, and seizures.

Enlargement of the heart muscles and rhythm disturbances are not significant features but do occur in some cases.

It is non-flammable, has relatively mild hemodynamic effects, and it does not predispose the heart to rhythm disturbances.

Dr. Resnekov was known for his part in early studies of electrical shock as a means to restore normal heart beat after rhythm disturbances.