Chapter 2302 【2302】Much More Reliable

He is a super cute boy, and he doesn't feel like a schoolmaster.

It may be for this reason that Duan had to bow his head for a long time as if half holding a pipa and half covering his face.

Sometimes looking not ugly but special is also a kind of "sin".

"It's okay, you talk first." Dr. Cheng Yuchen encouraged the juniors in his school.

What are you afraid of, senior is here.

After receiving this order, Duan Sanbao tapped the pen in his hand on the notebook in his hand, and said in a low voice: "There are three doubts that need to be carefully identified next. One is the heart-to-chest ratio. The heart-to-chest ratio of a normal person is one to two. This patient The heart-to-chest ratio is wrong, more than one to two."

Xueba's speech is different, his tone is low and steady, and he will not be as high-profile as the boy just now. The content of the words is even more solid and dry, and it is definitely not a random guess about any age group.

Um? This man from the capital seems to be a bit of a domineering student. Zhao Zhaowei and the others thought.

What is the heart to chest ratio. Like the width of the pneumothorax line, accurate anatomical landmarks should be found on imaging before measurement. It is estimated that a little bit can pass the poorer medical students. There are too many books to read in medicine, and it is difficult to remember all of them at once.

Students who remember the knowledge points look for the problems pointed out by Duan on the film.

"Look for the diaphragm first, shall we?" Zhao Zhaowei asked next to Zhang Desheng's ear.

"Go back and flip through the book." Zhang Desheng stared at him and went back. For students who have not read good books, Xueba students also have no time to teach. That's all the basics.

"I'm not sure, so I'm asking you, it's not that I can't remember." Zhao Zhaowei grumbled.

"Don't be so unconfident, okay, this is in his territory." Zhang Desheng rolled his eyes at him.

Those who have to slap their face swollen in front of their opponents can't emphasize that they don't remember well and say that they are not good at it.

If you want to know the cardiothoracic ratio, you first need to know the transverse diameter of the heart and the inner diameter of the thorax, and divide the two to get the cardiothoracic ratio value.

As student Zhao said, first try to find the anatomical landmark on the right top of the diaphragm on the frontal and lateral chest x-rays and draw a horizontal line across it. The straight-line distance is generally the largest inner diameter of the thorax. For the horizontal diameter of the heart, look at it with the naked eye and look for the horizontal distance with the largest shadow of the heart.

The normal cardiothoracic ratio is 0.5, that is, the transverse diameter of the heart is half of the internal diameter of the thorax. In terms of pediatrics, note that children under the age of three are oblique and transverse due to the septum of the heart, which will be greater than this ratio, which is approximately equal to 0.6. At other times, the ratio is not 0.5, and it is necessary to carefully consider whether the patient has unhealthy conditions. Generally speaking, if the cardiothoracic ratio is greater than the normal ratio, according to the formula, it is likely that the molecule is too large, which means that the heart is enlarged, and the patient can be suspected of having heart disease characteristics. If the molecule is small and the chest becomes smaller, you can refer to the ratio between the upper organs and the thorax to judge whether the thorax is smaller. This possibility is lower than that of the heart.

Does this patient have a heart attack? Looking at the film, everyone can be sure that the evidence found by Duan is far more reliable than the boy's suspicion of tuberculosis before.

Among the crowd who had listened to classmate Duan's words, the seniors seemed to agree. Doctor Cheng Yuchen nodded, and said, "You talk."

There are three suspicious points in Duan's statement, and now I only mentioned the first point.

The others were waiting for Classmate Duan to say.