List and indentify Manifestations of impaired cardiac structure and function?

This is something you can easily find on the Internet or in text books.

Think of what functions the heart performs. Hint: it is a pump. So why do we need a pump in our bodies?

In cardiac disease, what happens to the body? to the heart muscle?

Think of what the heart needs in order to perform properly (hint: respiratory system and oxygen).

What happens to the respiratory system if the heart pumps poorly?

I think if you can answer those questions, you'll easily think of 5 things that indicate impaired cardiac function.