expiratory volume

The amount of supplemental breath is the maximum amount of breath that can be exhaled after a brief exhalation. About 1000ml for normal adults. ERV reflects the gas reserve function of the lungs. After exhaling, exhale the gas vigorously, and use the instrument to detect the maximum amount of gas that can be exhaled, and compare it with the normal range. Determine whether the lung's gas reserve function is abnormal and whether there is a lesion. Pay attention to normal eating habits before the examination, pay attention to personal hygiene. Basic Information Specialist Category: Respiratory Examination Category: Physical Examination Applicable gender: whether men and women apply fasting: not fasting Tips: The diet should be regular and reasonable, that is, high-protein, high-vitamin foods. Normal value Normal adult males are about 0.91L; females are about 0.56L. Clinical significance Abnormal results: Tuberculosis - A chronic infectious disease of the lung caused by Mycobacterium tuberculosis, which is caused by inhalation of a droplet of bacteria that is coughed up by patients with open tuberculosis. There were no obvious symptoms in the early stage. When the disease progresses, there are symptoms such as burnout, hot flashes, weight loss, cough, and hemoptysis. Anti-tuberculosis drugs can be completely cured. Emphysema - a local or prevalent state of the lung that is characterized by dilatation, loss of elasticity, and eventually rupture of the pulmonary vesicles, accompanied by difficulty breathing, dry cough, and often inadequate heart function. Pulmonary edema - fluid exudates enter the alveoli and the interstitial lung. Lung collapse - an airless state of the lungs that occurs as a result of bronchial obstruction or reflexes after abdominal surgery. Pneumonia - characterized by inflammation and consolidation, which subsequently subsides due to microbes, viruses, chemical irritants or foreign bodies. Pulmonary embolism - Smaller pulmonary vascular embolization is particularly difficult with a brief briefing, and a large pulmonary embolism can suddenly die. Common symptoms include dyspnea, chest pain, hemoptysis, syncope, and some cold limbs, decreased blood pressure, shortness of breath during physical examination, cyanosis, and wet rales, wheezing, and pleural friction. Sometimes there may be signs of pulmonary consolidation or pleural effusion, tachycardia, gallop, pulmonary second heart sounds, edema, jugular vein engorgement, hepatomegaly, etc. if right heart failure occurs. The people who need to be examined are: patients with lung diseases, such as tuberculosis, emphysema, pulmonary edema, lung collapse, pneumonia, pulmonary embolism and other related symptoms. Precautions Forbidden before examination: Pay attention to normal eating habits and pay attention to personal hygiene. Requirements for inspection: Actively cooperate with the doctor. Inspection process After exhaling, exhale the gas vigorously, and use the instrument to detect the maximum amount of gas that can be exhaled, and compare it with the normal range. Determine whether the lung's gas reserve function is abnormal and whether there is a lesion. Not suitable for the crowd Inappropriate crowd: No. Adverse reactions and risks Nothing.