Anti-epidemic pioneer

Chapter 24 is checked

"Come on, what to do, you know better than anyone else, so you don't need me to repeat it to you again?"

Huang Zhiguang opened a packaging bag, took out a small test tube with a cotton swab, and handed it to Li Renxin.

Li Renxin nodded, and took the test tube from Huang Zhiguang's hand.

This small thing that looks similar to a cotton swab is called a throat swab. Li Renxin took off the mask, then opened his mouth, put it in his mouth, and gently wiped it around his tonsils and pharyngeal recesses, letting the swab The cotton at the front of the child is stained with the secretions in his own mouth.

After finishing these, Li Renxin took out a throat swab, carefully put it into a test tube, and handed it to Huang Zhiguang.

"Send it for inactivation, and then do a test right away."

Huang Zhiguang handed over the test tube in his hand to the medical staff on the side. They packed the secretion samples extracted from Li Renxin's body into boxes and sealed them, and then left the department.

"Wait a minute, I'll ask them to give you a test right away, and the results will be available within three hours at the earliest."

Huang Zhiguang turned his head and said to Li Renxin.

The so-called nucleic acid detection is to extract his genetic material from the throat swab sample of a suspected case, then separate the RNA in the extract, and then reverse transcribe it into a complementary A chain through technical means, and then convert it into a complementary A chain. This A is amplified by PCR, and finally tested. If the DNA chain of the new coronavirus is amplified, the test result will be positive, indicating that the suspected case really contains the new coronavirus in the body, otherwise it will be negative, indicating that the suspected case is temporarily safe. .

"You and I both know how high the probability of false negatives will be when doing a nucleic acid test for the new coronavirus this time. Even if the result of a test is negative, it is not optimistic."

Li Renxin said in a deep voice.

Because in the process of nucleic acid testing, in order to ensure the safety of testing personnel and avoid the probability of being infected by the virus to the greatest extent, before opening the box containing the secretions of suspected cases, they must be sterilized. For live treatment, use alcohol disinfectant and heat to deal with it.

However, for the new coronavirus, in the process of heat inactivation, there is a high possibility that the RNA of the virus in the secretion will be destroyed or degraded due to the temperature, so that the final test result will be negative.

And if it is easy to determine whether a suspected case is infected or not based on the result of this test, it is very likely that some patients who are actually sick will be misjudged by this false negative result, which will not only delay the treatment of the patient, but also cause serious illness. The serious thing is that there is no way to isolate it in time, leaving a greater hidden danger of transmission.

Li Renxin himself is an expert in this field, so it is naturally impossible for him to make such a low-level negligence on himself.

"I know, I know, hey, my brother Li, don't be so serious, okay?"

Huang Zhiguang pulled the stool over, pressed Li Renxin's shoulders to let him sit down, and said, "Don't act as if you think you already have the new crown pneumonia! Relax, okay?"

Li Renxin said: "It's useless to wait anyway. Why don't I go for a CT and take a picture of the condition of both lungs before everyone is at work? It will also save patients who have to go later. Re-examination will delay their inspection time."

"Row."

Huang Zhiguang nodded, and said, "After the report comes out, let them send it to the radiology department for me."

Li Renxin nodded, left side by side with Huang Zhiguang, and walked towards the Radiology Department.

After arriving at the radiology department, because it was not yet time to go to work, only the doctor on duty was in the office.

"Director Li, Doctor Huang."

The doctor on duty looked at the two of them in surprise, wondering why there were only the two of them and no other patients came, and also wondering why Li Renxin was not wearing protective clothing.

"Xiao Wang, take Director Li for a CT scan."

Huang Zhiguang said.

"okay."

Dr. Wang, who was on duty in the radiology department, nodded, then was taken aback for a moment, looked at Li Renxin, widened his eyes and asked, "Where to shoot?"

"Double lungs."

Li Renxin said it himself.

"Director Li..."

Hearing this, Xiao Wang's face turned pale instantly, and his lips trembled slightly, as if he had heard some terrible news from a thunderbolt.

"Okay, don't think too much, it hasn't been diagnosed yet, isn't this here for a check?"

Huang Zhiguang patted him on the shoulder and said, "Hurry up and prepare the instruments."

"Okay, okay, I'll go right away!"

Xiao Wang nodded abruptly, then trotted into the CT room.

After a while, the door opened, and Xiao Wang called Li Renxin inside to let him in.

Li Renxin walked into the CT room with ease, and took pictures of his own lungs.

Ten minutes later, Xiao Wang came out with the film.

"Director Li!"

With bright eyes and brisk steps, Xiao Wang walked quickly to Li Renxin and Huang Zhiguang with the film in his hand, then handed the film in front of them, and said excitedly: "Look! Everything is normal ! There is no ground glass-like shadow in the lungs, nor the fine grid-like shadows formed by the thickening of the interlobular septa!"

"Really!"

Huang Zhiguang took the film and looked at it carefully, then laughed, patted Li Renxin's shoulder heavily, and said, "Haha! Are you more at ease now? Let me just say it! You are so precious to your life. How did you become infected!"

Li Renxin also heaved a sigh of relief in his heart, and a slight smile rose from the corner of his mouth.

Although the possibility of him being infected with new coronary pneumonia cannot be completely ruled out at present, after all, the results of the nucleic acid test have not yet come out, but the CT images of the lungs are not abnormal, which is indeed exciting news.

In the early days, when the RNA sequence of the virus had not been deciphered and nucleic acid detection methods could not be used to detect it, experts with rich clinical experience like Li Renxin mostly relied on lung CT images to judge the patient's condition. Not infected with the new crown.

"Xiao Wang, thank you."

Li Renxin took his film and smiled at Xiao Wang.

"Director Li, you are too polite!"

Xiao Wang waved his hands again and again, wiped his protective mask, and said with a shy smile, "You don't know, when I was watching the movie just now, I was even more nervous than watching my own movie. After there was no abnormality, I was relieved, Director Li, you are our pillar, you must not have anything to do!"

After waiting for a while, Li Renxin's nucleic acid test report was also sent over.

Seeing the clear word "yin" at the end, before Li Renxin could breathe a sigh of relief, he was hugged by Huang Zhiguang next to him!

"God bless, haha, both of us brothers are safe and sound, hahaha!"