When he came to the hotel, Wu Mian sat in the chair and was talking happily with the president of Pengcheng people''s hospital.


    I can feel that Wu Mian is very happy, and even some emotions called pleasure diffuse on him.


    "Miss Wu." the party came in and greeted Wu Mian first.


    "Sit down," said Wu Mian with a smile, "the operation was well done."


    In a word, Ren Haitao was finally relieved. After all, this is the first time to do mitral valve clipping on the human body. This new operation, and Miss Wu is not here, will inevitably be a little worried.


    "Mr. Wu, you''ve learned to drive smoothly." Gao Boxiang asked.


    "It''s OK." Wu Mian nodded. "It''s preliminarily determined to cooperate with Lanke and Huaxia minimally invasive. Director Gao may be busy recently."


    "Oh? Should mitral regurgitation patients focus on surgery?"


    "No," said Wu Mian, "Lanke is going to charity aid 5000 sets of interventional surgical supplies for infant congenital heart disease."


    5000 sets


    Although I don''t know the cost, according to the sales price, it is at least several hundred million yuan.


    Gao Baixiang looked at Wu Mian in surprise. He didn''t know there was still this thing.


    "President Zhao, I''ll ask you later." Wu Mian said with a smile, "if there are suitable patients who can''t afford surgery or can do it, but if they want to hurt their muscles and bones at home, go to my side."


    "No problem, Mr. Wu. This is a kindness. I have to toast you later," said Dean Zhao.


    "What should be done." Wu Mian shook his head and said, "not to mention anything else, president Zhao needs to help identify patients. After all, there are so many free consumables. Those who have money will be treated normally, and the opportunity will be left to children who have no money."


    When Wu Mian spoke, he was very serious. President Zhao knew the priorities and nodded. "Don''t worry, Mr. Wu. Although it''s troublesome to screen the patient''s family conditions, I''ll do it with all my heart."


    There are too many things involved, and Wu Mian doesn''t want to set the conditions too harsh. When water is clear, there is no fish, and when people observe, there is no apprentice. Wu Mian understands the most basic truth.


    "Hurry up to implement it later. Your economy is developed, and there may not be many people in need. Anyway, you can help contact first." Wu Mian said politely.


    "You see what you said, isn''t this what we should do?" said president Zhao.


    Speaking, the waiter passed the dishes, and Ren Haitao finally found a chance.


    "Mr. Wu, the oxygen partial pressure of the patient''s blood gas analysis just now is really low." Ren Haitao directly said the results.


    "Oh, have you restored bilateral lung ventilation? What medicine have you given?" Wu Mian asked.


    "HMM." Ren Haitao nodded and briefly said the rescue medication used at that time. "The patient was in good condition after rescue. I saw the end of the operation."


    "I''m relieved to have you here." Wu Mian smiled at Ren Haitao and said.


    "Teacher Wu, at that time, I just felt something was wrong, but I couldn''t tell what was wrong." Ren Haitao said, "I have no choice but to call you."


    "Oh, never met before?" asked Wu Mian.


    Ren Haitao shook his head. The two directors of the people''s Hospital looked at Wu Mian without blinking and listened to teacher Wu''s explanation.


    Without Ren Haitao''s alertness, similar to intuition, and even hesitate to call Mr. Wu, it is very likely to cause serious consequences. As for why this happened, they thought it was a supernatural event.


    Similar things are certainly not normal. If so, the monitoring content of blood oxygen saturation is meaningless.


    "The serious imbalance of ventilation blood flow ratio during one lung ventilation is the most likely cause of this situation. During one lung ventilation, the blood flowing through the non ventilated side lung returns to the left atrium without oxygenation, resulting in venous blood doping and the decrease of PaO2."


    Wu Mian began to talk. Although he didn''t see the patient with his own eyes, he could guess 7788 just by guessing.


    "Under normal circumstances, the blood flow of the right lung is about 10% more than that of the left lung, so the incidence of hypoxemia in the collapse of the right lung is higher than that in the collapse of the left lung. In this case, there is blood flow due to the left lying position and no ventilation of the right lung, resulting in a false shunt of arteriovenous blood, a decrease in the ventilation blood flow ratio of the right lung, and finally a decrease in PaO2."


    "This is the most basic principle of one lung ventilation. Although the probability of problems is so small that everyone can''t remember it, Lao Ren still has the most basic vigilance."


    Wu Mian looked at Ren Haitao with approval.


    It turned out to be so. Ren Haitao recalled some memory fragments at this time. When I see the patient lying on the left, I feel a little uneasy, which is why.


    "There was a lot of sputum in the left bronchus before operation, which was easy to block the bronchus. In addition, in the lateral lying position, the contents of the abdominal cavity pushed the diaphragm upward, and the functional residual Qi decreased, resulting in left atelectasis, decreased ventilation function of the left lung, and further aggravated the imbalance of ventilation blood flow ratio."


    Wu Mian''s words are easy to understand. All of you are anesthesiologists at the director level. They immediately understand what teacher Wu is talking about. But... Mr. Wu''s explanation still can''t perfectly explain the patient''s situation.


    Wu Mian smiled and said, "many years ago, about 30 years ago, domestic anesthesiologists began to carry out one lung ventilation. Several directors should often hear that your double lumen tube is not in a good position."


    Indeed, this sentence almost went to the hearts of several directors present.


    The decrease of blood oxygen caused by the poor position of double lumen tube is the most important problem to be faced by intubation, and it is also one of the landmark operations to evaluate the intubation level of an anesthesiologist.


    "Hypoxic pulmonary vasoconstriction or thoracotomy affect the pulmonary blood flow and lead to the imbalance of blood flow ratio in the same period. Although it is an important and theoretical factor, if pulse oxygen decreases and airway pressure changes, the monistic diagnostic thinking tells you to first consider the position of double lumen tube."


    "Mr. Wu, but the patient''s condition is that the blood oxygen display is different from the actual display." Ren Haitao has figured out what Wu Miangang said. His mind is full of the previous situation, and without considering anything else, he directly asked.


    "A little explanation." Wu Mian was not angry, but said with a smile.


    "Well, what do you think of Mr. Wu?" Ren Haitao continued to ask without realizing that his words were too straight.


    Several other people also looked at Wu Mian curiously and wanted to hear his explanation.


    Certainly not a supernatural event, but a rare situation.


    "Who has studied the operation principle of blood oxygen saturation clip?" Wu Mian asked.


    Several directors shook their heads.


    "It''s normal to have no research. After all, it''s rare," Wu Mian said. "The difference between SaO2 and SpO2 measurement methods led to the inconsistency between the two in the case of severe hypoxemia, resulting in the false increase of PO2."