COPD Diagnosis and Diagnostics
Patient clinical history and physical examination should help to determine the possible cause and site of respiratory disease. After the results of physical examination, patients are suggested to undergo Lung function tests, spirometry, chest X-ray, CT scan, arterial blood gas analysis and other laboratory tests based upon patient condition. Lung function tests measure the amount of air patient breathe in and out, and if your lungs are delivering enough oxygen to your blood. Spirometry measures the amount of airflow obstruction present and is generally done after the use of a bronchodilator, a medication to open up the airways. A chest X-ray or chest CT scan and complete blood count may be helpful to exclude other conditions at the time of diagnosis. An arterial blood gas test measures the oxygen level in blood and the result can show how severe COPD is and whether patient need oxygen therapy. Transthoracic ultrasonography is a sensitive diagnostic tool for pleural disease (eg; pleural effusion, pneumothorax) and for parenchymal lung disease when lesions are adjacent to the pleural surface.