What is the meaning of high residual capacity of lung function?

summary

High residual capacity means that your lung function is declining. The lung must be a big bag. Breathing is like squeezing gas from the bag. When there is less squeezing, there will be more gas left in the bag. This is residual capacity. What's the meaning of residual capacity of lung function? Today we want to know something about it and hope it will help you.

What is the meaning of high residual capacity of lung function?

The results of pulmonary function test can help to judge whether there is ventilation dysfunction, and the nature and degree of the dysfunction, which can be used as an auxiliary means for the diagnosis of some lung diseases. Pulmonary function test can also be used as an important indicator to guide and evaluate clinical treatment; Pulmonary function measurement before thoracic surgery is helpful to judge the safety of surgery; In the field of labor health and occupational disease, it can be used to understand the impact of working environment on lung function and labor identification. With the development of medicine and other science and technology, pulmonary function examination will become more and more popular and perfect, and play a greater role.

The residual air volume in lungs after deep exhalation reflects the degree of static expansion of alveoli, which can stabilize the partial pressure of alveoli and reduce the effect of intermittent ventilation on the partial pressure of alveoli. The residual air volume and functional residual air volume in patients with restrictive diseases decrease, while that in patients with obstructive diseases increases. The residual air volume in normal adults ranges from 1000 ml to 1500 ml. the residual air volume in patients with bronchial asthma and emphysema increases

Residual volume is the volume of air in your lungs after you exhale. If the residual volume increases, it means that the invalid cavities in your lungs increase, such as bullae, bronchiectasis, COPD, etc. It shows that the lung function is abnormal, which leads to the decrease of tidal volume, that is, the decrease of ventilation volume, which easily leads to hypoxia.

matters needing attention

There are many items of pulmonary function examination, the purpose of which is to understand the physiological state of the respiratory system, clarify the mechanism and type of pulmonary dysfunction, determine the degree of lesion damage, estimate the functional reserve of the lung, and provide reference for medical treatment, such as dynamic observation of the evolution of the course of disease and health examination before surgery