How to check respiratory failure

Respiratory failure is a serious disease that requires a series of tests to diagnose and evaluate the condition. The following are some common respiratory failure tests: 1. Pulmonary function tests: This is an important way to assess respiratory function, including vital capacity, forced vital capacity, forced expiratory volume in one second and other indicators. Pulmonary function tests can help doctors understand whether the patient's ventilation function is normal, whether there is airway obstruction, restrictive ventilation disorder or diffusion dysfunction. 2. Blood gas analysis: By collecting arterial blood samples from patients for blood gas analysis, the partial pressure of oxygen in the blood can be measured (PaO2), partial pressure of carbon dioxide (PaCO2) and pH value. Blood gas analysis can evaluate the patient's oxygenation status, acid-base balance and whether there is respiratory acidosis or alkalisation.3. Chest imaging examination: such as X-ray, CT, etc., can help doctors understand the structure and function of the lungs, whether there are lung infections, emphysema, atelectasis and other diseases. 4. ECG examination: assess heart function and exclude respiratory failure caused by heart disease. 5. Other examinations: blood routine, blood biochemistry, autoantibody test, etc., help to understand the overall health status and etiology of the patient. It should be noted that specific examination items should be selected according to the patient's condition, symptoms and signs. In addition, for some special groups, such as the elderly, pregnant women, children, etc., the examination methods and precautions may vary. Before the examination, the doctor will ask the patient's medical history and allergy history in detail, and develop a personalized examination plan according to the patient's situation. In short, the examination of respiratory failure is a comprehensive process, which needs to be evaluated and selected by doctors according to the specific conditions of patients. These examinations can help doctors accurately diagnose the disease and formulate reasonable treatment plans, thus improving the treatment effect and quality of life of patients.