Clinically it is felt as crepitus and, if extensive, may cause soft tissue swelling and discomfort. Even when severe subcutaneous emphysema is typically benign, although complications such as airway compromise, respiratory failure, pacemaker malfunction and tension phenomena have been described.
A medical assistant may lawfully perform spirometric pulmonary function testing if the test is a usual and customary part of the medical practice where the medical assistant is employed, and the requirements for training, competency, authorization and supervision are satisfied.
Some medical assistants specialize according to the type of medical office where they work. The following are examples of specialized medical assistants: Ophthalmic medical assistants and optometric assistants help ophthalmologists and optometrists provide eye care. They show patients how to insert, remove, and care for contact lenses. Ophthalmic medical assistants also may help an ophthalmologist in surgery. Podiatric medical assistants work closely with podiatrists (foot doctors).