Chapter 2859 【2859】Life Lies in Movement

Before the operation, the family members said that they would not allow the patient to undergo an MRI examination, and the CT scan was not clear.

It is not impossible to measure the flow rate. After measuring the flow rate and comparing it with similar cases in the past, the reference value is actually greater. Otherwise, the doctor would not suggest that an MRI examination to measure the flow rate can be done before the operation.

Magnetic resonance is scanned by precision instruments and calculated by computers.

How do you measure by eye?

Student Wei Shangquan observed the material movement in the cerebrospinal fluid on the screen, and said: "You can calculate the flow rate by observing the little movement inside."

It cannot be said that everything that Wei said is wrong, it is a basic water flow calculation problem.

It's just that if the matter is so simple, it's really hard to figure out how he, Senior Brother Huang, would be sweating and making excuses.

"What's the problem?" Wei Shangquan asked.

Sun Yubo scratched his head, and stared down at the trickster fellow.

Shi Xu, who was standing beside him, said, "Can it move?"

Isn't the cerebrospinal fluid flowing all the time?

"It should be moving." Tan Kelin said.

Hearing what Teacher Tan said, Sun Yubo didn't dare to call it nonsense.

What is moving instead of cerebrospinal fluid?

Doctors with higher seniority, not to mention big surgeons, even if they don't belong to this specialty, they can also draw inferences about other subjects. Shi Xu first admitted: "The knowledge of neurosurgery has long been returned to the teacher. Dr. Cao, why don't you tell me, is it moving?"

In medicine, there are usually separate departments. Only when you are a medical student can you learn comprehensive knowledge seriously. After graduation, I have worked in a department for a long time, and it is common for me to forget the knowledge of other subjects. In addition, it is not possible to learn the comprehensive professional knowledge of each department through internship, it depends on the luck of each medical student.

Cao Yong said: "The brain is active like other organs in the human body."

People are alive, and life lies in movement. Many organs and tissues in the body are always moving, such as the peristalsis of the intestines and the contraction of the gallbladder.

The heart is beating non-stop. Clinically, I like to talk about the heart and brain, and the heart and brain seem to be connected as one, which can be reflected here. When the heart contracts, the volume of brain tissue increases and the brain parenchyma moves toward the cranial plate of the ventricle, allowing the cerebrospinal fluid to flow out of the ventricle. When the heart is diastolic, the volume of the brain tissue shrinks, the movement direction of the brain parenchyma is opposite, and the cerebrospinal fluid in the ventricles flows upwards.

Those who returned the knowledge of neurosurgery to the teacher at the scene stared at Cao Yong's words: the brain can really move, and it's not like the computer that everyone imagines. It's like a contraction of the heart.

"Don't you know?" Cao Yong asked them back.

Puwaier and the others fell silent collectively.

In Cao Yong's opinion, this is really basic knowledge, and it shouldn't be completely forgotten if it's like a mountain.

Several other medical students, classmate Wei, and the others turned pale with fright. They were definitely stuck in their brains, and they didn't think of this knowledge point quickly.

Do you understand? Huang Zhilei's eyes scanned the group of guys who dared to underestimate him.

This speed measurement shows that it is not simply a measurement of water flow, but a measurement of the peak flow velocity during systole and diastole. Because the systole is a process, the diastole is also a process. The flow of cerebrospinal fluid is also a process, and it cannot be a uniform flow rate, only the peak value can be measured.

The heart beats more than once a second. When the systolic and diastolic periods are short, the flow rate of cerebrospinal fluid can be called instantaneous.