Doctor Ulrich Sigwart developed a very unusual method of treating patients suffering from hypertrophic obstructive cardiomyopathy (a cardiac pathology at which the overdeveloped muscle wall of a heart obstructs normal blood flow).
He proposed to treat for this pathology by provoking an artificial infarct. Destruction of the muscle fibers followed by scarring reduces the muscle wall thickness. This completely eliminates the problem and the patient recovers.
The infarct is provoked by introducing pure alcohol into the vessel that leads to the problem place.
This is an obvious case of using the “Blessing in disguise” principle.

Information source: http://www.mednovosti.ru.