Cardiac asthma doesn't correspond to the occurrence of asthma in a person with heart disease. It is actually a set of secondary clinical manifestations of heart failure which resembles the symptoms associated with an asthma attack. Cardiac asthma affects people with heart conditions who display difficulties breathing with audible wheezing when exhaling. This wheezing identified by pulmonary auscultation conducted with the help of a stethoscope is related to pulmonary edema, meaning the presence of liquid in the pulmonary tissue. It's the heart failure which is at the origin of this passing of liquid into the interstitium. The treatment for cardiac asthma rests on the treatment of the cardiac disease that causes it.