Richard is suffering from consistent chest pains. his doctor suspects a cardiovascular disease. richard’s doctor uses a(n) to detect and diagnose his disease.

electrocardiograph

Explanation:

Electrocardiograph -

It refers to the method of producing an electrocardiogram , where the electrical activity of heart is recorded by plotting the graph of voltage versus time , is referred to as an electrocardiograph .

The device consists of electrodes that are placed on the skin to detect the activity of heart .

The electrocardiograph detects the very minute signals which is responsible to pump the blood .

Hence , from the given scenario of the question ,

The correct answer is electrocardiograph .