Chapter 2853 [2853] Advantages
At this point in the operation, according to the original surgical plan, the position of the interventricular foramen was determined and the choroid plexus was seen. Just put the head end of the shunt tube in the square of the interventricular hole to avoid the choroid plexus, and the first small goal of the surgery is achieved.
The problem is that since ventriculoscopy is used, well-intentioned doctors will check the patient's lateral ventricles to see if there are any other problems in the patient's ventricular system.
This patient was previously suspected to have communicating cerebral obstruction. Is this really the case? Or is it possible that preoperative examinations such as CT failed to detect anything. The accuracy of CT in this era is not very high. This has been mentioned in previous cases.
The ventriculoscope used by doctors now is a hard scope, not a soft scope. For a more comprehensive view of the brain ventricles, the doctor can use an angled mirror. Pull out the ventriculoscope, change the head, replace it with a thirty-degree lens, and reinsert it.
Once familiar, twice familiar, when Xie Wanying rotated the camera thirty degrees, her hands were more stable, and there was nothing to be afraid of.
The original lens only looked straight ahead. When the angled lens was replaced, it was slightly moved back and rotated, and one could see the walls of the dome-shaped lateral ventricle.
The overall shape of the lateral ventricle is what medical students have seen in the anatomy teaching room in school. It is like a cavity, but it is not a regular shape such as a perfect circle, but a bit like a weird cave.
There are many similar cavities in the human body, such as the trachea and the digestive tract, but most people don't expect that they are also found in the human brain. This profound understanding is difficult for medical students to understand just in the anatomy room. There are dead things in the anatomy room, not living things, unlike in the operating room where you can witness the life phenomena in the cavity with your own eyes. For example, today's monitor screens can see the scene of cerebrospinal fluid flowing in the ventricles of the patient's brain.
After examining the lateral ventricles, proceed to examine the third ventricle. This time the lens is going through the chamber hole. It can be said that I have no experience in this aspect for my first operation. Fortunately, I am using a hard lens. For the operator, the main movement of the mobile scope is to insert or retreat the tube. Unlike the soft scope, the tube is like a snake and is difficult for the doctor to control. At this time, as long as you enter slowly and slowly according to the ultra-turtle speed displayed on the monitoring screen, basically nothing will happen. In this regard, there is not much difference between novices and veterans.
After reaching this point, Xie Wanying realized why Senior Brother Cao asked her to try the hard mirror first.
It is said that hard mirrors are more likely to injure tissues when used manually. In fact, as long as the surgeon masters the upper limit of the strength and is cautious, it is much easier to perform than soft mirrors.
From this point of view, Senior Brother Cao may be better at educating students than Senior Brother Tao, and he is a hidden gold medal teacher.
She wasn't the only one who thought this way.
The group of second-grade general foreign students who were watching, after all, laparoscopy is also a tough job, they also realized something. They glanced at Cao Yong: This person, pretending to be serious on the surface, is actually taking care of someone in different ways.
Back to the surgery, the rigid lens seems to have many advantages. It seems to be very friendly to the doctor and can make it easy for the doctor to use it. Why invent soft lenses? Wouldn't it be better to just use hard lenses?
There are flaws in hard mirrors. For example, for the first hard injury, the surgical incision is particularly important when using a rigid scope and must be accurate. If the direction of entering the lateral ventricle is wrong, it will be difficult to pass through the interventricular foramen and enter the third ventricle to continue the examination.
The second flaw is more fatal to the hard mirror. After entering the third ventricle, if you use a hard scope, you will find that no matter how many angles you change the lens, it can no longer pass through the midbrain aqueduct.