Dr. Russell Nelson Hirst M.D.

Aspiration pneumonia or inhalation pneumonia is the inflammation of the lungs that occurs as a result of inhalation of various substances. These substances include vomit, food, foreign bodies, and regurgitated gastric juices.Aspiration of foreign objects can cause inflammation of the lungs,...

The pathogens involved in pneumonia are bacteria, virus, fungus, rare parasites, and other microorganisms. Virus is the most common cause of pneumonia among babies and children. Adults with weak immune systems are vulnerable to bacterial pneumonia.Pneumonia Causing pathogens:The pathogens that cause...

What is a persistent cough?It can be annoying to have a cough that lasts for more than a couple of weeks. A cough is considered chronic or persistent if it does not go away after four weeks in children and eight weeks in adults. However, most persistent coughs are due to colds, flu, infection, or...

Is bronchitis contagious? In most cases, only acute bronchitis is contagious. Learn more about when bronchitis is contagious, and how to prevent it from spreading.What is bronchitis?Tubes made of glandular goblet cells that direct air into your lungs, also known as bronchi, are located below the...

Although there is currently no cure for cystic fibrosis, people from all around the world are determined to change this. Organizations committed to raising funds and awareness on CF continuously work hard all year round to:...

OrthopneaOrthopnea is a condition that causes breathing difficulties when an individual is lying down. It usually happens at night when the person is going to sleep. People with orthopnea usually experience tightness in the chest and being oxygen-deficit. The shortness of breath is due to lying down...