Human heart muscle is the most special group of muscles. Modern medicine roughly divides cardiomyocytes into two types based on their different functions: "working cells" and "autonomous cells". Autonomic cells are responsible for transmitting signals and guiding working cells to contract.
and relax. The working cells are responsible for squeezing the blood in the heart to all parts of the body.
As the most "model worker" cells, cardiomyocytes of course work all year round. According to a normal adult heartbeat of about 80 times per minute, in the 42 years a person is from 18 to 60 years old, his heart needs to beat at least
1.7 billion times. Such high-intensity work means that the myocardium needs to consume a lot of nutrients and oxygen. In order to supply the work of the myocardium, the mammalian heart evolved something like "coronary arteries".
Blood is supplied by the coronary arteries, and the capillaries distribute oxygen and nutrients to the myocardium. Finally, the blood is returned to the circulatory system through the coronary sinus or precardiac vein. This process is called coronary circulation, and the importance of this set of circulation
It goes without saying that it is like the power supply that guarantees the operation of a nuclear power plant, and is like the core reactant that starts and maintains the entire industrial chemical reaction process. Without it, the heart would naturally not be able to work.
There are two coronary arteries in the human heart, and more than 65% of people belong to the left coronary artery dominant category. Their hearts mainly rely on the three branches of the left coronary artery to transport arterial blood. 29% of people belong to the balanced type, and their left coronary artery
It delivers the same amount or a similar amount of arterial blood as the right coronary artery. The remaining 6% are rare right coronary artery dominant types. The five branches of their right coronary artery can deliver most of the blood needed by the heart.
Although I don’t know which type Wu Fenmei has, the meaning of left coronary artery obstruction (2/3) is already obvious. She only has one left coronary artery, which is normal. According to rough statistics, she has
There is about 94% chance of myocardial infarction. It is not clear whether it is severe myocardial infarction, ventricular fibrillation, or mild severe pain caused by insufficient blood supply to the myocardium.
Sun Lien knew in his heart that with his current situation, once Wu Fenmei became ill, it would be almost impossible for him to effectively rescue her. CPR was an out-and-out heavy physical work. Sun Lien, who was almost suffocating while wearing a mask, could not activate his own body at all.
The body presses down forcefully to form effective chest compressions. In the state of ventricular fibrillation, CPR and electric shock defibrillation must be used together, so that it is possible to reverse the state of ventricular fibrillation. Relying only on electric shock and the Saab machine, commonly known as a "pile driver", the effect will be
Very limited.
We must immediately notify the superior doctors and ask them to come to the town...
"Director Liu, Teacher Liu!" Sun Lien turned around and walked to the isolation door, "The patient has something wrong, maybe a heart attack!"
God knows how Sun Lien moved his legs to the door. He could hardly feel his legs. He reluctantly put the oxygen tube under his mask and took two deep breaths with all his strength. Although
What is sprayed out from the oxygen tube is pure oxygen, but after all, through the mask, the effect of oxygen inhalation is basically the same as that of a placebo.
"Director Liu, you have to hurry up..." Sun Lien clenched his fist and banged the door twice more, "I definitely can't do CPR in this state..." Before he could finish speaking, there was a sudden sound from the hospital bed behind him.
Sharp alarm sound.
"Ventricular fibrillation!" Sun Lien said the last sentence, turned off the oxygen switch, and moved quickly to the edge of the hospital bed as fast as he could.
Liu Tangchun is wearing protective clothing with hands that are completely inappropriate for his age. But the P4 level protective clothing is too troublesome. Even if Liu Tangchun can't even spare the energy to curse, it still takes him some time to put it on properly.
Hu Jia worriedly grabbed Sun Lien's cell phone.
"Defibrillation!" Wu Fenmei has been connected to an advanced airway, so Sun Lien no longer needs to devote extra energy to paying attention to her breathing status. He randomly applied some conductive gel on the defibrillation electrode board, and Sun Lien skillfully applied the electric shock
The board was placed at the designated location. "First electric shock, 240 joules, electric shock!"
"Boom!" There was a soft sound, and Wu Fenmei's body bounced up and down. All the data on the cardiopulmonary monitor became a straight line. Then new data was refreshed, and her heart was still in ventricular fibrillation.
"Damn you." Sun Lien cursed in a low voice. He didn't know whether he was cursing the damn disease or God for making him so unlucky.
What to do next? Sun Lien was in a daze. The slow thinking caused by insufficient oxygen supply once again prevented him from making a quick judgment.
Lying in front of me was a stranger. I knew her name, her condition, and her age... Sun Lien was suddenly stunned.
Last night Wu Fenmei was still 57 years old, but now... the status bar says she is 58 years old.
Today is Wu Fenmei’s birthday.
Sun Lien seemed to hear her voice in a trance. She was begging for help. She still wanted to continue living.
Lying in front of me was a stranger, a patient, and a life.
who I am?
My name is Sun Lien, and I am a doctor who has just started training.
My eldest uncle and my second uncle were both doctors. It was my dream to stand shoulder to shoulder with them in white coats.
They died. To fulfill their oath, to save lives, to... let the patients live.
I'm also a doctor.
I want to do something.
I must do something.
Sun Lien stood up straight. He was still thinking slowly and moving slowly. But he felt as if there was a heat flowing from his chest to his limbs. He threw down the electric shock board in his hand and began to press Wu Fenmei's chest hard.
"01, 02, 03, 04..." The amount of pressure with both hands must be enough to make the patient's chest sink about three centimeters. Just after pressing for the fourth time, Sun Lien felt a strong wave of dizziness. He almost stood up.
Can't stand it any longer.
"Damn you." Sun Lien cursed for the second time. "Damn you!"
Cursing did not improve the dizziness. He felt a dull pain in his chest. All the tissues in his body were screaming for more oxygen.
Sun Lien pulled off the mask covering his face.
"Second defibrillation!" He could finally breathe freely. Fatigue and physical sluggishness seemed to be eliminated from his body in an instant. "270 joules, electric shock!"
Hu Jia outside the door was holding Sun Lien's cell phone tightly, her hand turned pale from excessive exertion. It was as if she was holding Sun Lien's hand. She squeezed her hand hard, as if she could convey her worries and anxiety to the cleaning lady.
He is rescuing patients in the room.
"No heartbeat." No need to confirm again, Sun Lien also knew that Wu Fenmei was not getting better. The status bar read, "Ventricular fibrillation (there are still 2/11 times until the defibrillation is successfully released)."
Defibrillation requires five cycles of chest compressions, and one cycle is 30 chest compressions.
The frequency of chest compressions is 150 times per minute, which is enough for one minute before the next defibrillation can be carried out.
"Third defibrillation, 270 joules, electric shock!" Sun Lien shook sweat from his forehead. He raised his heavy arms and defibrillated Wu Fenmei again.
Compression, defibrillation, compression, defibrillation. Sun Lien was busy in the clean room, completely unaware that Liu Tangchun, who was wearing protective clothing, had walked into the clean room.
"The sixth defibrillation..." Sun Lien only felt that his mouth was a little dry. He was alone in the clean room. Who should he report these commands to? Anyway, he was in the room, and it seemed that the warnings before defibrillation had changed.
It seems a little meaningless.
"That's enough..." Liu Tangchun said in a deep voice, "You did your best."
"The seventh defibrillation!" Sun Lien completely ignored Liu Tangchun behind him. Four more times, just four defibrillations will be enough!
"You did a good job. She... is not doing anything wrong to be like this now." Liu Tangchun has seen many young medical staff fall into the current emotions. They are young and full of energy. But in the face of death, no matter how energetic they are,
It's all useless. No one can stop the coming of death.
"I did nothing wrong, but she was about to die." Sun Lien panted heavily and completed the eighth defibrillation. "How could I possibly have such a result? How could it be possible..." He couldn't continue.
Liu Tangchun looked at Sun Lien sympathetically, "We used to have an old saying, 'Medicine can't cure diseases, Buddha can help people who are destined'. This is an objective fact. We can try to change it, but when the attempt does not have the desired effect, you
Learn to respect this situation and learn to respect life."
"Ninth time!" Sun Lien's sweat had completely wet his clothes and white coat. His whole body looked like he had just been fished out of the water. He continued to repeat chest compressions.
, "Who... who said... this attempt is useless?"
Liu Tangchun glanced at the cardiopulmonary monitor and said, "The chest compressions have been going on for more than 10 minutes. The chance of her waking up is very low. Even if she wakes up, she may suffer severe brain damage..."
"Leave that kind of thing to the surgical doctors to worry about." Sun Lien finished the tenth defibrillation. He could hardly stand, and his legs were as weak as noodles. In order to ensure that he did not fall to the ground, Sun Lien
He even leaned on the hospital bed. "I'm an emergency doctor."
"I, am, emergency room doctor." For this reason, Sun Lien was still able to maintain the quality and frequency of chest compressions. I don't know if this is because of the results of his previous short football career, or because of the concept of "fatigue"
has been forgotten by his brain. "My job is to save their lives..." Breathing began to become difficult. The lungs seemed to have lost the function of intercepting oxygen from the air. The blood was flowing in the blood vessels.
, shouldn’t it have turned into carbonic acid?
Sun Lien was a little surprised that he could still think of a not-so-funny joke.
"The eleventh defibrillation, 320 joules!" The last defibrillation. Sun Lien completed his work. He didn't even have time to see whether Wu Fenmei's heartbeat returned to sinus rhythm on the cardiopulmonary monitor. With her last
Trembling, Sun Lien fell backwards like a robot whose power was unplugged.