.The doctor used O2 & CO2 Sampling Cannula technology for the first time to avoid greater danger during the operation.

The doctor used O2 & CO2 Sampling Cannula technology for the first time to avoid greater danger during the operation.

I was pregnant for ten months and finally waited for the day of delivery. However, intrauterine hypoxia dashed her dream of giving birth naturally. For the safety of her child, she reluctantly accepted the doctor's advice - cesarean section.

Recalling the doctor's words: It would be over within an hour of entering the operating room, and she slowly let go. However, what she didn't expect was that she experienced a very dangerous complication during the operation. Fortunately, the doctor used a new technology - Capnography nasal cannula, otherwise it would have been unthinkable.

After entering the operating room, Dr. Liu from the anesthesiology department performed spinal anesthesia on her according to the operating procedures. After the results were obtained, the obstetrician on the stage began the operation. Dr. Liu, on his side, took out an nasal cannula from the drawer that should be used for general anesthesia patients.

Dr. Liu is usually a thoughtful person. According to her observation, parturient women often have difficulty breathing during the operation. This can be seen from blood oxygen saturation monitoring. At a certain time during the operation, many women's blood oxygen saturation may even drop below 90%, especially after taking drugs to reduce uterine bleeding.

As an anesthesiologist who monitors patients' vital signs during surgery and protects them, she has always felt that this was a problem. Although everyone thought this was normal and nothing serious happened, she didn't think so. That's why she took out the Oxygen Mask for general anesthesia.

This ETCO2 Monitoring Nasal Cannula, on the one hand, provides the function of inhaling oxygen, and on the other hand, it mainly has the function of monitoring end-tidal carbon dioxide. The hospital introduced this nasal cannula mainly for monitoring respiratory function after extubation under general anesthesia.

Anyone who specializes in anesthesia knows that Endotracheal Tube intubation and extubation under general anesthesia are two very dangerous moments, comparable to the takeoff and landing stages of an airplane. However, all kinds of monitoring are available during intubation, and there is end-tidal carbon dioxide monitoring during the operation, but there is no end-tidal carbon dioxide monitoring after extubation.

Compared with blood oxygen saturation monitoring, the advantages of end-tidal carbon dioxide monitoring are self-evident and cannot be compared with blood oxygen saturation. No matter in terms of waveform, numerical feedback or alarm timeliness, end-tidal carbon dioxide can completely beat blood oxygen.

According to Dr. Liu's understanding, since the blood oxygen saturation has dropped, it means that the patient may have breathing problems during that period. Although the diffusion rate of carbon dioxide through the respiratory membrane of the lungs is 20 times that of oxygen, it cannot be ruled out that the carbon dioxide value will change. What's more, patients are often very awake when blood oxygen abnormalities occur, and ventilation problems can basically be ruled out. There is a high probability that there is a problem with lung ventilation.

After connecting the high-end nasal oxygen tube, the obstetrician on the stage just asked the nurse to inject a medicine.

After a while, the blood oxygen began to change under Dr. Liu's gaze. What shocked her even more was that the end-tidal carbon dioxide value dropped before the blood oxygen changed. Since the waveform didn't change much, she was almost certain that the drop was real and showed no signs of interference from other factors.

At the same time, she noticed that the patient seemed miserable. This shows what she is going through.

Ask her to breathe deeply and open the nasal cannula to increase the oxygen flow. After more than a minute, the end-tidal carbon dioxide level and blood oxygen saturation level also increased, indicating that she was safe.

This process is very similar to the situation of many obstetric patients in the past. However, this time it seems a little more serious than before. So, after the child was born and both mother and child were safe, Dr. Liu began to ask the patient whether he had any respiratory problems in the past.

It should be noted in this regard that although there is a pre-anesthesia visit, some medical history may be missed because the patient does not understand the doctor's questions or the doctor does not ask there. In clinical practice, patients` previous medical history is often discovered during diagnosis and treatment. Check with the patient again, and the patient will suddenly answer "yes, yes, yes".

This time, the mother said that her lungs had been bad since she was a child, and she did not dare to do heavy exercise as an adult because she did not have enough air.

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