On the X-ray, the lung field on one side is divided into three zones: outer, middle and inner, from the periphery to the hilum.
Under normal circumstances, the lungs have lung textures in the lungs, which occupy up to 90% of the lung area and can be said to basically represent the lungs. Lung textures are projections of the blood vessels, lymphatic vessels, bronchial tubes, etc. of the lungs under an X-ray machine. From anatomy, we know that these structures of the lungs are like the branches of a tree, with lines and forks. The image presented in imaging is also like this, like the lines on the surface of an object, so it is called lung texture.
Once pneumothorax occurs, the lungs are compressed, and the intrapulmonary zone and mid-pulmonary zone will inevitably move downward and inward, which can be seen in imaging as compression of the lung texture.
Where there is no lung texture, the area on the X-ray will become transparent, forming a dividing line with the lung texture area, which is the pneumothorax line. This is the principle of the pneumothorax line. According to anatomy, this line is also the pleural line.
Spontaneous pneumothorax is a common case in clinical practice. Like when Xie Wanying encountered an emergency patient due to a car accident, she would not be able to treat him outside the hospital. According to convention, it is necessary to take an X-ray after initially suspecting pneumothorax and then deal with it.
In other words, taking and viewing X-rays are of great significance in diagnosing pneumothorax. I will explain what this means below.
Finding the pneumothorax line on an X-ray is common medical knowledge for this disease. It is something that medical students must learn and master when they encounter this disease in clinical practice.
The greatest significance of the pneumothorax line is that the position of the pneumothorax line can be used to measure the width of the air band. The air band width is another technical term, which, as the name suggests, is the width of the area without lung texture (gas ** area) outside the pneumothorax line (displaced pleural line shadow).
By measuring this width, we can further estimate the proportion of the patient's affected lung that has collapsed.
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Here is a rough comparison chart: When the width of the air band is one-quarter of the patient's thorax, the lung is compressed to about 35%. When the width of the air band is one-third of the patient's thorax, the lung is compressed to 50%. When the width of the air band is one-half of the patient's thorax, the lung is compressed to 65%. If the width of the air band reaches two-thirds of the patient's thorax, it is a super warning: the patient's affected lung is compressed to 90%.
Wei Shangquan stuttered as he continued, "According to visual inspection, the patient's left pleural line is displaced, and the width of the air band is estimated to be less than one-third of the thorax, so the patient's left lung is about 40% collapsed."
What is the significance of calculating the compressed volume of the lungs?
The examination reports are all used as a basis for further guiding the formulation of clinical treatment strategies. The results of the lung compression ratio are also released to achieve this goal, as medical evidence for treating patients.
Doctors cannot treat patients without evidence. What methods to use, how to treat, and to what extent to treat are all based on evidence. This is what Xie and Hu Hao said before.
Spontaneous pneumothorax is a special disease. For patients with primary spontaneous pneumothorax, they do not have other diseases and are mostly young and middle-aged. These two characteristics indicate that the cause of the disease may be sporadic, and young people have a strong metabolism and are more likely to self-repair than older patients. These factors determine that this may be a disease that can self-heal.
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