The nurse was confused by hearing all kinds of things. In the past, intubation was done by anesthetists and they were not allowed to intervene, so there were some things that she had not even heard of, let alone seen.

When Wu Xiangdong saw this, he didn't have time to explain to her, so he directly transferred the simple breathing balloon to her side: "You continue to ventilate her according to the method I just used, and I will handle the rest."

"Okay!" The nurse took the simple breathing balloon without hesitation. She had silently memorized the EC technique mentioned by Wu Xiangdong through observation just now, and now she can barely handle it.

As the nurse began to squeeze the balloon regularly, the pregnant woman showed no obvious abnormalities, which made Wu Xiangdong, who was observing from the side, relieved.

"Okay, just don't move. I'll be quick." Wu Xiangdong told the nurse while rummaging through the rescue vehicle for needed items.

The laryngoscopes equipped in emergency vehicles at that time were basically direct laryngoscopes, which were metal laryngoscopes that could directly reach the epiglottis and expose the glottis.

As Wu Xiangdong took out the laryngoscope, connected the mirror handle and the curved laryngoscope through the hook base, flicked it gently, and with a crisp and pleasant sound, the laryngoscope fully unfolded from the closed state, looking clean and neat.

"This is the skill that emergency personnel should have. As for the video laryngoscopes produced in the future, they have a strong plastic feel and have no strength at all."

Wu Xiangdong held the laryngoscope and felt the metal threads on it, which seemed to be full of power.

But at this moment, the pregnant woman who was receiving pressurized oxygen from the mask suddenly felt restless, and then her chest rose and fell rapidly. In an instant, a burst of bright red spurted out again, dyeing the entire mask red.

At the same time, the originally calm monitor erupted with a piercing alarm sound again, and the fierce light flashed rapidly on the screen, seemingly provoking everyone.

"Doctor Wu, the pregnant woman is vomiting blood again!" The nurse who was performing EC ventilation was startled by the sudden change. She was afraid that it was due to her own operation that the pregnant woman's condition would change, so she seemed particularly nervous.

"That's lung water, don't panic!"

At this time, Wu Xiangdong had prepared the supplies. Seeing that the pregnant woman was still coughing, he decisively picked up the tracheal intubation and laryngoscope and said to the nurse: "Listen to my instructions later. After the third ventilation is completed, I will call

One, two, three, when it says three, take off the simple breathing balloon and prepare to assist me in intubation!"

After hearing this, the nurse standing at the head of the bed nodded. At this time, her face was solemn, her hand holding the balloon was shaking slightly, and her breathing was a little short.

After all, this was the first case of tracheal intubation that she had assisted. It would be false to say that she was not nervous, but when she thought that she was holding the hope of the patient in her hands at this moment, she mustered up her courage again and said firmly: "Doctor Wu, you

Don’t worry, I won’t hold you back even if I risk my life.”

"Your words are enough!" Wu Xiangdong stared at the blood oxygen saturation on the monitor and said quickly: "Listen to my instructions and start squeezing the simple breathing balloon, and perform inverse ventilation according to the inhalation and exhalation time ratio of 2:1.

, increase the patient’s tidal volume and ensure the patient’s body’s oxygen supply demand during intubation.”

You should know that the general inhalation-to-exhalation ratio of simple breathing balloons is 1:2, and it takes an adult to inhale for 1 second and then exhale for 2 seconds to complete a breathing cycle, which is in line with the physiological structure of normal people.

Inverse ratio ventilation violates the normal adult breathing ratio during a breathing cycle, allowing people to inhale for two seconds and exhale for one second. The advantage of this is that it can increase the oxygen content in the alveoli and improve the body's blood oxygen saturation.

.

This is common among some professional divers, who can hold their breath in the water for several minutes, relying on the effect achieved by inverse breathing on the shore.

"Perform first ventilation!"

At this time, following Wu Xiangdong's order, the nurse began to squeeze the balloon quickly. Each time, she tried her best to pour all the oxygen in the balloon into the patient's mouth.

After the second ventilation ended, Wu Xiangdong stared at the pregnant woman's lips with burning eyes. He saw that the originally cyanotic lips gradually turned red. Wu Xiangdong knew that this was the effect of inverse ventilation.

It’s just that this effect cannot last for long. After all, a person’s lung capacity is limited. Once it exceeds this value, it is very likely that the lung will be blown out. Let alone rescue, even if Hua Tuo and Bian Que come.

To no avail.

20 seconds!

Wu Xiangdong calculated based on the patient's height and weight ratio that the ventilation could be maintained for only twenty seconds.

Once he was unable to complete the task within twenty seconds, he missed the best opportunity for intubation, and given the current situation of the pregnant woman, it was impossible to give him a second twenty seconds.

"It must succeed!" Wu Xiangdong warned himself in his heart.

At this moment, the nurse had completed the third inverse ratio ventilation. When Wu Xiangdong saw this, he immediately shouted: "Quick! Take off the mask and help me open the airway!"

"yes!"

The nurse immediately put the simple exhalation balloon aside, then stretched out her hands and clasped them on the left and right mandibles of the pregnant woman, and used slight force to align the head, nose and throat of the pregnant woman in a straight line.

As the airway opened, Wu Xiangdong had quick eyesight and quick hands. He put gauze behind the teeth and upper lip, and held a metal laryngoscope in his left hand and guided it into the pharynx along the right side of the back of the tongue.

Cough cough cough!!!

However, as soon as Wu Xiangdong reached in, he encountered the instinctive resistance of the pregnant woman. She coughed violently, causing a large amount of bright red to be sprayed out. At this time, Wu Xiangdong, half squatting, saw that the pregnant woman's mouth was full of bright red, and he could not accurately find the epiglottis.

"Negative pressure attraction!"

Wu Xiangdong shouted, he must race against time to complete the intubation, after all, there was not much time left for him.

"Okay!" The nurse on the side quickly handed the connected negative pressure suction tube to Wu Xiangdong.

Wu Xiangdong took the suction tube and quickly inserted it into the pregnant woman's mouth. At the same time, he stepped on the valve of the suction device and then stepped hard to start the instrument.

As the negative pressure suction device made a roaring sound, the suction device began to work. A large amount of bright red was sucked out of the pregnant woman's mouth and flowed along the catheter into the waste bottle placed on the ground. Most of it was filled in just a moment.

Seeing this scene, Wu Xiangdong's heart sank. He rarely encountered such severe pulmonary edema, but at this time he discovered a more fatal problem.

"Dr. Wu, why did the light in front of your laryngoscope suddenly dim?"

At this time, the nurse also discovered the problem, and saw that the laryngoscope that Wu Xiangdong had finally inserted into the pregnant woman's mouth was getting darker little by little.

"It's probably because the mucus sprayed out earlier stuck with the light bulb." After all, Wu Xiangdong had carefully checked the equipment before turning on the laryngoscope, and there was no problem.

"Doctor Wu, pull it out quickly and I'll wipe it for you."

Facing such a blurry picture, the nurse beside her became anxious. However, as soon as she finished speaking, the monitor next to her erupted into a suffocating alarm again.

"It's bad, the pregnant woman's blood oxygen saturation has started to drop again!"
Chapter completed!