On X-rays, the lung field on one side is divided into three zones from the periphery to the hilum: outer, middle and inner.
Under normal circumstances, there are lung textures in the lungs. They occupy a large area to 90% of the lungs. It can be said that they basically represent the lungs. The lung textures are the blood vessels, lymphatic vessels, bronchi, etc. of the lungs formed under the X-ray machine.
projection. From anatomy, we know that these structures of the lungs are like branches of a big tree, with lines that branch and intersect. The scene presented in imaging is also like this, like the lines on the surface of an object.
Therefore it is called lung texture.
Once a pneumothorax occurs and the lungs are compressed, the mid-pulmonary zone in the lungs will inevitably move downward and inward, which can show the result of compression of visible lung textures on imaging.
Where there are no lung textures, the area on the X-ray will become translucent, 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
It is also the pleural line.
Spontaneous pneumothorax is a common clinical case. Like the time when classmate Xie Wanying encountered an emergency patient in a car accident, it was impossible not to be in the hospital. According to common practice, it is necessary to take a radiograph after initially suspecting pneumothorax and then deal with it.
In other words, taking X-rays is of great significance in diagnosing pneumothorax. I will explain how it works below.
Finding the pneumothorax line on an
The greatest significance of the pneumothorax line is that the air band width can be measured based on the position of the pneumothorax line. The air band width is another proper term. As the name suggests, it is the area without lung texture outside the pneumothorax line (the shifted pleural shadow).
width of the gas-liquid zone).
Measuring this width can further estimate how much of the patient's affected lung has collapsed.
Here is a rough comparison table: When the air band width is one-quarter of the patient's chest, the lungs will be compressed to about 35 percent. When the air band width is one-third of the patient's chest, the lungs will be compressed
to 50%. When the width of the air band is one-half of the patient's chest, the lungs are compressed 65%. If the width of the air band reaches two-thirds of the patient's chest, a super warning occurs: This
The patient's affected lung was compressed to 90%.
Wei Shangquan stumbled and continued: "Currently, visual inspection shows that the patient's left pleural line has shifted, and the width of the air band is estimated to be less than one-third of the thorax, so the patient's left lung has collapsed by approximately 40%."
What is the significance of calculating the compressed volume of this lung?
The inspection reports are used as a basis for further guidance in formulating clinical treatment strategies. The results of the lung compression ratio are also released to achieve this purpose and serve as medical evidence for treatment of the patient.
Doctors cannot treat patients without evidence. What method to use, how to treat, and to what extent the treatment should be done all depends on the evidence. This is what Xie Xie said to Hu Hao before.
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Spontaneous pneumothorax is a bit special. For patients with primary spontaneous pneumothorax, they have no other diseases, and the affected age group basically belongs to young adults. These two characteristics indicate that the cause of the patient's disease may be sporadic.
A young body with a strong metabolism can repair itself more easily than an older patient. These factors determine that this may be a disease that can attack and heal on its own.