At this point in the operation, according to the original operation plan, the location of the interventricular foramen was determined and the choroid plexus was seen. Just place the tip of the shunt tube in front of the interventricular hole to avoid the choroid plexus, which is the first small goal of the operation.
The problem is, since a ventriculoscope is used, a kind doctor will check the patient's lateral ventricle by the way to see if there are any other problems in the patient's ventricular system.
This patient was previously suspected to be communicating cerebral obstruction. Is this really the case, or the CT and other preoperative examinations failed to show anything. The accuracy of CT in this era is not very high, which has been mentioned in previous cases.
The ventriculoscope used by doctors now is a hard mirror rather than a soft mirror. The doctor checks the ventricle more comprehensively, and can replace it with an angled mirror. Pull out the ventriculoscope, replace the head, replace the 30-degree lens, and reinsert it.
Once a stranger and twice acquainted, when Xie Wanying rotated the camera 30 degrees, her hands were more stable, and there was nothing to be afraid of at all.
The original lens was only looking straight ahead, and the angled lens was replaced with an angled lens, and then moved back a little. When turning, you can see the wall around the fornix-shaped lateral ventricle.
On the whole, the shape of the lateral ventricle has long been seen by medical students in the anatomy teaching room of the school. It is like a cavity, but it is not a regular shape such as a perfect circle, and it is a bit like a strangely shaped cave.
There are many similar cavities in the human body, like the trachea and the digestive tract, but most people don't expect the same to exist in the human brain. And it is difficult for medical students to experience this profoundly in the dissection room. In the dissecting room, there are dead objects, not living organisms, unlike in the operating room where you can witness the life phenomenon in the cavity with your own eyes. For example, the scene of cerebrospinal fluid flowing in the ventricle of the patient's brain can be seen on the monitor screen today.
After checking the lateral ventricle, further check the third ventricle. This time the camera is going through the chamber hole. It can be said that I have no experience in this area for the first operation, but fortunately, I used a hard mirror. For the mobile operation of the hard mirror, the operator only needs to insert or retreat the main action. Unlike the soft mirror, the tube is like a snake, which makes it difficult for the doctor to control. At this time, as long as you enter slowly, according to the super slow speed shown on the monitoring screen, basically nothing will happen. There is not much difference between novices and veterans in this regard.
After doing this, Xie Wanying realized why Brother Cao asked her to try the hard mirror first.
Hard mirrors are said to be more likely to injure tissues in manual operation. In fact, as long as the operator masters the upper limit of strength and is cautious, it is far easier to perform than soft mirrors.
From this point of view, Senior Brother Cao may be better at teaching students than Senior Brother Tao, and he is a hidden gold medal teacher.
She is not alone in thinking this way.
After all, the laparoscopy is also a hard tool, and the group of people who were on the sidelines from the second round of general surgery also realized something. They glanced at Cao Yong: This person is pretending to be serious on the surface, but he is actually taking care of someone in a different way.
Back to surgery, rigid mirrors seem to be full of advantages. They seem to be very friendly to doctors and make it easy for doctors to use them. Why invent soft mirrors, isn't it better to use hard mirrors directly
Hard mirrors have flaws. For example, for the first miscarriage, the surgical incision is especially important and must be accurate when using a rigid mirror. If the direction of entering the lateral ventricle is wrong, it is difficult to go through the interventricular foramen and enter the third ventricle to continue the inspection operation.
The second flaw is even more fatal to hard mirrors. After entering the third ventricle, if you use a rigid mirror, you will find that no matter how many angles you change the lens, it is impossible to pass through the aqueduct of the midbrain.