When a persistent cough disrupts your sleep and drains your energy, it might be more than just a stubborn cold. Pneumonia, a serious lung infection, affects millions of Americans each year and can ...

A 62-year-old man with a history of dilated cardiomyopathy and a left ventricular ejection fraction (LVEF) of 30% presents to the emergency department with complaints of shortness of breath and weight ...

When these airways become constricted, the chest may feel tight or congested, and a wheeze can often be heard. Other sounds to look out for, discussed below.

Physicians still use the sounds they hear through stethoscopes as initial indicators of heart or lung diseases. For example, a heart murmur or crackling lungs often signify an issue is present.