Coronary heart disease is a type of heart disease where the arteries of the heart cannot deliver enough oxygen-rich blood to the heart.
Coronary artery disease affects the larger coronary arteries on the surface of the heart. Another type of heart disease, called coronary microvascular disease, affects the tiny arteries in the heart muscle. Coronary microvascular disease is more common in women.
The pleura is a thin membrane that lines the surface of your lungs and the inside of your chest wall. When you have a Coronary heart disease, fluid builds up in the space between the layers of your pleura.
Normally, only teaspoons of watery fluid are in the pleural space, which allows your lungs to move smoothly in your chest cavity when you breathe.