He is a super cute boy, and he doesn't look like a top student.
Maybe it was for this reason that Duan had to lower his head for a long time, as if half holding the pipa and half covering his face.
Sometimes looking a little different is not just ugly, but it is also a "sin".
"It doesn't matter, you go ahead and say it." Dr. Cheng Yuchen encouraged the juniors in his school.
What are you afraid of? Senior is here.
After receiving this order, classmate Duan Sanbao tapped the pen in his hand and whispered: "There are three doubts that need to be carefully identified. One is the heart-to-chest ratio. The heart-to-chest ratio of a normal person is one to two. This patient
The ratio of heart to chest is wrong, more than one to two."
The top student speaks differently, his tone is low and steady, not as high-profile as the boy just now. The content of his words is more solid and practical, and it is definitely not just a random guess about any age group.
Huh? This person from Guodu seems to be a bit of a scholar. Zhao Zhaowei and the others thought.
What is the cardiothoracic ratio? Just like the air band width of the pneumothorax line, you need to find accurate anatomical landmarks on imaging and then measure it. Just a little bit can probably defeat the poorer medical students. There are too many books to read in medicine.
It's hard to remember everything at once.
Students who remembered the knowledge points looked for problems pointed out by classmate Duan on the film.
"Look for the partition first, right?" classmate Zhao Zhaowei asked in classmate Zhang Desheng's ear.
"Go back and read the book." Zhang Desheng glared at him and returned. For students who have not read well, the top students also have no time to teach them. This is all basic knowledge.
"I'm not sure, so I'm asking you. It's not because I can't remember." Zhao Zhaowei complained.
"Don't be so unsure, okay? This is someone else's territory." Zhang Desheng rolled his eyes at him.
Those who have to flatter themselves in front of their opponents should not emphasize that they cannot remember well and say that they are not good at it.
To know the cardiothoracic ratio, you first need to know the transverse diameter of the heart and the inner diameter of the thorax. The two are divided to get the cardiothoracic ratio.
As Zhao said, on the front and side chest X-ray, first try to find the anatomical landmark on the right side of the diaphragm and draw a transverse line across it. The straight line distance is generally the distance between the largest inner diameter of the thorax. For the transverse diameter of the heart, look at it with the naked eye.
, find the largest transverse distance of the heart shadow.
The normal cardiothoracic ratio is 0.5, that is, the transverse diameter of the heart is half of the inner diameter of the thorax. In pediatrics, note that in children under three years old, because the heart is in an oblique transverse position due to the septum, the ratio will be greater than this ratio, which is approximately equal to 0.6. In other cases, it is not 0.5.
ratio, it is necessary to carefully consider whether the patient has an unhealthy condition. Generally speaking, if the cardiothoracic ratio is larger than the normal ratio, according to the formula, it is likely that the molecule is too large, which means the heart is enlarged, and it can be suspected that the patient has heart disease characteristics. If the molecule is
If the chest is too small, the chest becomes smaller. You can refer to the ratio between the upper organs and the chest in the photo to determine whether the chest becomes smaller. This possibility is lower than that of the heart.
Does this patient have a heart disease? Everyone looked at the film, and it was certain that the evidence Duan found was far more reliable than the boy's previous suspicion of tuberculosis.
After listening to Classmate Duan's words, I saw that the seniors showed quite a favorable attitude. Dr. Cheng Yuchen nodded and said, "You can talk about it later."
There are three doubtful points in Classmate Duan’s statement, but I only mentioned the first point now.
The others were waiting for Classmate Duan to say.