USPS stands for United States Postal Service. (regular mail). UPS stands for United Parcel Service. This is a courier service and offers many different levels of service with a wide range of delivery times and prices.
Fluid in the lungs is a broad term to describe two possible conditions that may give characteristic symptoms, like a bubbling sound in the lungs (rales) when breathing. The fluid accumulation may be inside the lung (pulmonary edema) or outside the lung (pleural effusion), in the space between the lung and chest wall.
Pleural effusion is the buildup of excess fluid in the space between the pleura. The fluid prevents the lungs from fully expanding. ... Heart failure; Malnutrition; Liver disease; Kidney disease; A large shift in body fluids, such as during childbirth; Presence of a tumor. ... Because coughing helps loosen and move fluid from your lungs, it's a good idea not to eliminate your cough completely.