1 At age 65, one out of three people has a hearing loss. 2  60 percent of the people with hearing loss are either in the work force or in educational settings.
The Causes of Pneumomediastinum. Pneumomediastinum is the name given to air in the mediastinum. Pneumomediastinum is often caused by injury or disease. It typically results when air leaks from your lungs into your mediastinum. Common causes of pneumomediastinum include: Excessive coughing. Repeated bearing down such as pushing during childbirth.
Bacteria are the most common cause of pneumonia in adults. Many types of bacteria can cause bacterial pneumonia. Streptococcus pneumoniae or pneumococcus bacteria are the most common cause of bacterial pneumonia in the United States. If your pneumonia is caused by one of the following types of bacteria, it is called atypical pneumonia. 1  Legionella pneumophila. 2  Mycoplasma pneumoniae. 3  Chlamydia pneumoniae.