It is a condition where the alveoli are deflated, as distinct from pulmonary consolidation. It is a very common finding in chest x-rays and other radiological studies. It may be caused by normal exhalation or by several medical conditions. Although frequently described as a collapse of lung tissue, atelectasis is not synonymous with a pneumothorax, which is a more specific condition that features atelectasis.
There are two types of portable oxygen concentrators available on the market today: Continuous flow oxygen concentrators and pulse dose, or intermittent flow, oxygen concentrators. These two types of oxygen systems have very different benefits and limitations and each is best suited for a specific type of patient.
Portable Oxygen Concentrators/Products. Normally home oxygen concentrators weigh anywhere from 56 to 62 pounds, portable oxygen concentrators only weigh between 15 and 25 pounds. Portable oxygen concentrators give you the freedom to be compliant with your therapy in a convenient and comfortable way.