Emphysema is an ailment that impedes respiratory efficiency in sufferers. As a result, it is regarded as a lung impediment. When someone has emphysema, there is a destruction of tissues found in the lungs, which lines smaller airways found around this vital organs. As the tissues get damaged, there is an impediment to bronchioles, which normally makes it possible for metabolized air to be expelled from the lungs. A damage to this tissue prevents the metabolized from leaving the lungs. The trapped air is therefore retained in the linings or sacs of the inner alveoli in an ill-advised manner.