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 3 main causes of pneumomediastinum are. 1  Alveolar rupture with dissection of air into the mediastinum. 2  Esophageal perforation. 3  Esophageal or bowel rupture with dissection of air from the neck or the abdomen into the mediastinum.
In a series of pneumomediastinum occurring in persons with asthma, there was a very slight male predominance in the prevalence of spontaneous pneumomediastinum. Other series confirm this excess of male cases.