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Find information on medical topics, symptoms, drugs, procedures, news and more, written in everyday language.

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Overview of Tests for Lung Disorders

By Noah Lechtzin, MD, MHS

After doctors complete the medical history and physical examination (see page Medical History and Physical Examination for Lung Disorders), they often take a chest x-ray (see page Chest Imaging). The results of the history, physical examination, and chest x-ray often suggest what additional testing may be needed to determine what is causing the person's symptoms. Doctors may test for lung disorders by measuring the lungs' capacity to hold and move air and to exchange oxygen and carbon dioxide. These tests (called pulmonary function tests—see page Pulmonary Function Testing (PFT)) are most helpful in determining the general type of lung disorder and determining the severity. Other tests, including imaging (see page Chest Imaging), bronchoscopy (see page Bronchoscopy), and thoracoscopy (see page Thoracoscopy), allow doctors to determine the specific cause of a lung disorder.

Because heart disorders may also cause shortness of breath and other symptoms that may suggest a lung disorder and because lung disorders can affect the heart, doctors often do Electrocardiography (ECG) and Echocardiography and Other Ultrasound Procedures in people with lung symptoms.

* This is the Consumer Version. *