All day on Monday, John was in a very happy mood.

Just yesterday morning, he finally visited the Brister family again, and personally presented Anna with a copy of "German Medicine" with his name written on it, and successfully won the admiring eyes of the girl. Although John and Anna still don't have much to talk about because of the hospitality of the Bristers, for John, who is busy in the real yàn room and the hospital all day, this girl is like a bright spot in life, and he is full of anticipation for every meeting.

The only pity is the damn traffic and old-fashioned concepts of this era, and the opportunities for the two to meet are too few.

However, after returning to the daily track, John could only hide this regret in his heart and seriously began to solve the matter in front of him.

Starting this week, John will be reducing the number of trips to the Charlotte Hospital Surgery Department and will only do his internship on Tuesdays and Thursdays. This is something that has been negotiated with Professor Bergman for a long time, so when John talked to Professor Bergman last week, the other party could only reluctantly agree. Of course, before agreeing, it was naturally a painstaking persuasion, in short, John, you have outstanding ability, don't let down your talent.

But for John, of course, these words did not make any sense.

Simple surgeries in this era were not difficult for a mature surgeon, two months was enough time for him to learn a lot, and there were more important things for him first. For example, trying to make procaine with the cocaine that Paul brought him, for example, continuing to pay Thomas to find more pathological dissection objects, for example, to design some small things to be used in surgery, and for example, to make a few small things that he is going to do today......

……

"John, I don't quite understand."

Seeing John put his hands into the basin containing disinfectant alcohol, Associate Professor Fogel asked suspiciously, "What is your purpose in doing this?" What do you want to prove? And I see that the way you washed your hands just now seems to be very special. Is there anything special about it? ”

After John proposed to disinfect with a high concentration of alcohol, Fogel, an associate professor of bacteriology, immediately learned about this new method and was pleasantly surprised to find that it worked very well. And Fogel can understand the process of John washing his hands first and then soaking them in alcohol. After all, human hands sometimes look clean, but if you look at them with a microscope, you will find that they are actually covered with all kinds of filth and bacteria, and it is more effective and practical to wash them first and then disinfect them with alcohol.

But......

What do you mean by those tedious steps of washing your hands just now? What does this real yàn that John is doing now?

"Sir. This is a set of handwashing methods that I have figured out on my own. ”

Glancing up at Mr. Fogel, John smiled and said, "I found that if we only wash our hands in the way we are used to, it is easy to cause some places to be unclean, so after thinking about it all night, I have devised a complete set of handwashing methods to ensure that every corner of my hands can be cleaned...... Of course, the premise is that we must cut our nails short to avoid dead spots that cannot be cleaned. ”

"Oh? Can you show me a little bit more? ”

Hearing John say this, Associate Professor Fogel immediately became interested. Immediately made his own request.

"Uh...... All right. ”

In desperation, John had no choice but to take his hand out of the basin and once again demonstrate to Associate Professor Fogel the six-step handwashing method, which has not been used for more than ten years, but has almost become his instinct.

That's right, it's the six-step handwashing method that ordinary people are familiar with in later generations!

For the upcoming April, John really put a lot of thought into it, constantly recalling the familiar things in his previous life, and then making serious preparations one by one. In order to make these preparations more convincing, John could only design small realities one by one. And then keep looking for witnesses who can witness these "discoveries"! With the presence of these witnesses, John's use of these things in the operating room would not seem so abrupt.

In the field of surgical aseptic technique. Associate Professor Fogel is undoubtedly one of the best witnesses.

Because he had a good impression of John when he got along with him before, and he had always paid attention to this excellent student, when John proposed to Fogel that he wanted to use his real room to make a few small real yàns, the associate professor of bacteriology agreed without hesitation. Of course, one of the important reasons is that Fogel also saw John's three articles of steadiness, especially the one on surgical sterilization. It made him full of interest in this former student......

Today, Professor Fogel was very curious about the few practical things John wanted to do!

For example, the handwashing method he saw just now was very cumbersome at first, but after listening to John's explanation and looking at his second demonstration, Fogel immediately understood!

"This kid. That's amazing! ”

Watching John's every step with wide eyes, Fogel secretly exclaimed in his heart.

Palms, backs of hands, fingers, outside of thumbs, fingertips, wrists...... Every part of the hands was carefully considered by John, and each step lasted for more than ten seconds to ensure sufficient results......

If John could hear what Fogel was thinking at this time, he would definitely laugh and praise himself: It is really fitting to find Fogel as a witness to his reality! Without much explanation, the brilliant bacteriology professor could understand his intentions, and it would have taken a lot of work to change to someone else.

After a minute or so, John rinsed his hands off and soaked them back in the high concentration of alcohol.

After secretly remembering John's handwashing process just now, Fogel asked again with interest: "John, you haven't answered my first question just now, what do you intend to prove by doing this?" Is alcohol disinfection effective? If that's the case, I don't think it's necessary, I've verified it after your article was published, and it's true that only 70% to 75% alcohol has a disinfectant effect, and it's pretty good! ”

"No, I'm certainly not trying to prove it."

As the inventor of this new method. John naturally didn't doubt his theory, shook his head with a smile and said, "That's it, Professor Fogel, let me ask you a question first, since I have already washed my hands, why do I still need to soak them in alcohol?" ”

"Because some of the bacteria on the surface of the skin are not easy to remove!"

Frowning, Associate Professor Fogel replied with some displeasure. John's simple question made him feel offended.

"That's right!"

John didn't seem to notice Associate Professor Fogel's displeasure. Still smiling, he said, "So we disinfected our hands again after washing them, and that's how I discovered the secret of alcohol disinfection!" But when I was studying the effect of alcohol disinfection, I made another discovery, and I had a little doubt about its real effect! ”

"Oh? What was found? ”

Hearing John say this, Fogle was immediately interested.

Fogel also said just now, and he verified it immediately after the article was published, and found that the effect was quite good, so I really can't figure out what John meant by this.

With both hands moving, John changed his posture to a more comfortable position before he continued to smile: "After many careful observations by me. It has been found that the bacteria on the human hand can be divided into two categories: one is the bacteria on the surface of the skin, which can be easily removed by alcohol, but the other is hidden deep in the folds and pores of the skin, and can only be partially removed! But after a while, these bacteria may slowly escape to the surface of the skin......"

"Huh? Are you telling the truth? ”

After listening to John's words, Fogel was stunned.

"Of course!"

John nodded with a smile and said seriously: "So as a surgeon, I think it is difficult to ensure real disinfection if you only disinfect your hands before surgery." It is best to use a better method to ensure the aseptic effect on this basis......"

"So that's why you designed those things?"

Hearing this, Fogel's eyes couldn't help but look at a few things on the table next to him.

"Yes. Mr. ”

John blinked and said with a smile, "Surgeons are the closest to patients, so I think they are the ones who need to be clean!" I designed these things to ensure this, rubber gloves to ensure that the hands that touch the patient are sterile, masks to prevent bacteria in our mouths from contaminating the surgical area when we speak, and hats to prevent dandruff and other dirt from falling down when we bow our heads for surgery...... On the one hand, I came to your real room this time to verify it. To see if, as I said, there are bacteria in the depths of the skin, saliva and dandruff, and on the other hand, to verify the aseptic effect of these things...... Haha, it looks like you've got it all right! ”

"Hoo ......"

Exhaling heavily, Fogel's gaze at John suddenly became strange.

Of course he got it!

If the real yàn done by John can prove this qiē. He will undoubtedly add new methods to the aseptic technique of surgery! While these methods may not necessarily be accepted by other physicians, Fogel is undoubtedly understandable to a bacteriologist.

"What the hell is this kid's head made of?"

Staring into John's eyes, Fogel secretly exclaimed in his heart. As a bacteriologist, he was sure he would never have thought of these things, but John was a surgeon...... No, it should be said that the quasi-surgeon thought of it, which made Fogel feel a little lost in his heart.

However, the lost love lasted only a few seconds, and Fogel's eyes immediately fell on a small dark bottle on the table, and said in a deep voice: "John, what is inside this small bottle?" ”

"It's a new disinfectant that I just invented."

After a little hesitation, John smiled calmly: "I think the effect is much better than that of stone carbonic acid and alcohol...... when used to disinfect the patient's surgical site" (to be continued......