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.
The disorder is also known by the name Mediastinal emphysema. Both types result from events that cause air to escape from lungs, bowel or airways into the chest cavity. A blunt blow or a penetrating chest trauma, iatrogenic injury or esophageal perforation can cause serious and traumatic pneumomediastinum.