Do you mean heart attacks?

No! They are two different things.

Heart attacks are generally caused by a complete or near complete blockage of a heart artery. This blockage is due to a blood clot forming at the site of narrowing from fatty buildup (atherosclerosis) in the wall of the artery

In Broken Heart Syndrome, the heart arteries are not blocked, although blood flow in the arteries of the heart may be reduced.