What are some poisonous metals that can cause angina or heart failure.?

I have an assignment to discover what could have caused a coronary patient to die. i am looking at angina being the cause by caused by harmful metals.

Heavy metals are chemical elements that have a specific gravity (a measure of density) at least five times that of water. The heavy metals most often implicated in accidental human poisoning are lead, mercury, arsenic, and cadmium. Some heavy metals, such as zinc, copper, chromium, iron, and manganese, are required by the body in small amounts, but these same elements can be toxic in larger quantities.