Chapter 380 The real cause of death
Mr. Zhang Tian's health had problems before he entered the screening room.
This shows that what happened to him was not a sudden death without warning, nor was it a poisonous killing secretly planned by his enemies.
Otherwise, Mr. Zhang Tian, who had already discovered that something was wrong with his situation, would not have gone to the screening room to watch a movie and rest as if nothing had happened, instead of calling the police and seeking medical treatment.
This meant that he knew exactly why he was feeling unwell.
And choose to resist.
After knowing this, the purpose of Conan and Haibara Ai's investigation has actually been achieved:
"That guy most likely has some kind of disease, and he knows it."
"In this case, as long as we wait for the hospital doctor to send the diagnosis certificate, we can easily confirm that his sudden death has nothing to do with Lin Xinyi."
Haiyuan Ai came to a conclusion in a calm tone, then turned around with a lack of interest, ready to end the investigation——
Her purpose was just to help her boyfriend get rid of this little trouble, and she didn't want to get to the bottom of it.
"But it's still weird."
"Is he really sick?"
"Wouldn't it be more uncomfortable to pour so much water on your head when you are sick?"
"This is normal." Haiyuan Ai replied calmly: "It may be because the blood supply to the brain was insufficient when he became ill, causing the brain to be deprived of oxygen and dizzy, so he wanted to stimulate himself to wake up by pouring cold water on him."
"Yeah" Conan also thought of this answer.
But his detective curiosity made it difficult for him to simply stop.
"Let's follow this string of water drops to the front and take a look."
Conan followed the string of water droplets as he walked. Within a few steps, he reached the starting point of the string of water droplets:
This is not a bathroom, but an employee lounge.
Conan slowly opened the door of the employee lounge and saw that the interior space of this lounge was quite large but the furnishings were simple.
The room only had a sofa, coffee table, air conditioner, TV, and a small independent bathroom. Overall, it seemed empty.
The string of water drops that Conan tracked started from the location of the small bathroom.
"There is a half-drunk glass of water on the coffee table, and the air conditioner is still running."
"It seems that Mr. Zhang Tian was halfway through the movie and came to the lounge to drink water and rest."
"As a result, he suddenly became ill and became unwell. After stimulating his head with cold water, he carried him back to the screening room to continue watching the movie. As a result, he died suddenly?"
Conan roughly came to such a simple and complete conclusion.
But, just when he was about to turn around and leave.
But he suddenly noticed inadvertently:
"Is that a mobile phone charger on the ground?"
"Why do mobile phone chargers fall on the ground and no one picks them up?"
Conan stepped forward curiously, wearing the gloves he asked for from Lin Xinyi, and carefully picked up the mobile phone charger.
Taking a closer look, the bulky mobile phone charger was actually stained with a small patch of shocking charred black.
If you get closer and smell it, you can still smell the strong smell of burnt plastic.
If you look more carefully, you can even notice that a small section of the mobile phone charging cable near the charging head has been worn out, exposing the metal wires inside.
"This" Conan frowned tightly: "The charger has burnt marks, and there is a power plug near where the charger fell."
"If someone holds the charging head with his hand to plug it in, his hand can easily touch the small exposed metal wire, causing an electric shock."
"Is this related to Mr. Zhang Tian's sudden death?"
He asked a question to himself, but quickly rejected it: "It shouldn't be possible."
"I didn't see any suspicious injuries on Mr. Zhang Tian's upper body."
"If he was suddenly electrocuted due to touching a damaged mobile phone charging cable, there should be electric current spots visible to the naked eye on his body."
The so-called electric current spot is a special kind of skin damage caused by the Joule heat and electrolysis produced at the contact point when the electric current passes through the intact skin.
People who get electrocuted often have hard spots that are grayish-yellow in color, as if they had been burned by fire.
So Conan took the current spot as the basis for judging whether Mr. Zhang Tian was electrocuted.
"But that's not necessarily the case."
Hui Yuan Ai's voice sounded quietly behind him.
"Huh? Haiyuan, why are you back?"
"I was worried that you might find some clues that might be detrimental to Lin Xinyi, so I came to take a look."
"However, you really found an incredible clue."
Haiyuan Ai stood there quietly, carefully looking at the mobile phone charger in Conan's hand:
"With this charger here, the cause of Mr. Zhang Tian's accident may change:"
"He may not be sick, but died suddenly from electrocution——"
"Even if there are no visible current spots on his body, he may still be electrocuted."
"Because the essence of current spots is electrical burns caused by the conversion of electrical energy into heat energy, and it takes a certain amount of time."
"Research has shown that even atypical first-degree electrical burns require temperatures above 50 degrees for 20 seconds to form."
"At the same time, statistics also show that in cases of electric shock with voltage below 220 volts, up to 1/3 of the victims did not have current spots on their bodies."
"I see."
Conan nodded, but his expression was a little subtle:
"But Huiyuan, why do I feel that you and Lin Xinyi are becoming more and more similar."
"Have you also done research on these criminal science contents?"
"I have read the book Lin Xinyi bought."
“To me, these are just simple things that don’t take a lot of time to master.”
Haiyuan Ai's words may sound a bit "arrogant", but her gentle voice always makes people feel that her pride is justified:
"In short, the lower the voltage, low resistance, and short contact time, the less likely it is for current spots to form."
"For example, breaking away quickly after being electrocuted."
"Another example is that the skin of the electric shock site - that is, the palm that touches the charging head is stained with water, which reduces the resistance."
Her tone quietly became subtle.
It can be heard that her last sentence is the key point.
"Water on your palms?"
Conan thought of something in his mind and immediately lowered his head to observe the ground carefully:
Sure enough, there were still a few small drops of water on the ground near the power plug.
The air is relatively humid today, and these small water droplets have not evaporated much over time. Even the burrs on the edges have temporarily remained intact.
"Are these water drops falling from Mr. Zhang Tian's body?"
"The water droplets will fall on this location close to the power plug, that is."
"Mr. Zhang Tian took the mobile phone charger to plug into the power socket with his hands wet. As a result, he accidentally touched the exposed wire, causing an accidental electric shock?"
"That's right."
Haiyuan Ai nodded in approval:
"Maybe Mr. Zhang Tian had just washed his hands before the accident, and then found that his mobile phone had insufficient power, so he found a charging head from the coffee table cabinet to charge his mobile phone."
"As a result, I accidentally touched the exposed charging cable and was electrocuted and fell to the ground."
"Luckily he was not electrocuted on the spot and managed to break away from the leaky charging cable."
"Then after he recovered from the paralysis, he felt that his body had improved and nothing would happen to him again, so he got up and left alone."
"But in fact, electric shock is far more dangerous than Mr. Zhang Tian imagined."
"Even if there is no damage to the surface skin and the electric shock lasts only a short time, his heart will be damaged by the electric current, which will increase the local myocardial automaticity and lead to ventricular fibrillation."
"The ventricles lose their effective overall contractile capacity and are replaced by rapid and uncoordinated tremors of the various heart muscle parts."
"This is a fatal arrhythmia that may lead to cardiac arrest and sudden death at any time."
"This" Conan roughly understood:
Mr. Zhang Tian successfully broke free from the leaking charging cable, and then felt his body gradually recovering from the paralysis caused by the electric shock, and felt that he was fine.
But in fact, his heart had been electrocuted to the point of "out of rhythm" and he could die suddenly at any time.
Due to cardiac dysfunction, his heartbeat and breathing accelerated abnormally after the electric shock, and his body, especially his heart and brain, began to gradually fall into a state of hypoxia.
That's why he felt dizzy and poured cold water on his head.
Then, feeling that he had become more awake, he still did not realize the danger. Not only did he not seek medical treatment in time, he also ran back to the screening room to watch a movie, hoping to let his body heal itself through rest.
But then.
"His consciousness may have been blurred."
"On the one hand, the electric current will cause certain damage to the cranial nerves themselves; on the other hand, his heart function will be affected after the electric shock, and his brain will suffer from hypoxia."
"In that state, one cannot think normally."
"When Mr. Zhang Tian was entangled with Lin Xinyi, he probably didn't even know what he was doing at the time."
"He didn't mean to cheat. Correspondingly, his sudden death had nothing to do with Lin Xinyi."
Haiyuan Ai came to a conclusion coldly:
"This was a simple accident."
"Because of Mr. Zhang Tian's own carelessness, he suffered cardiac arrest after being electrocuted."
"Yeah" Conan nodded seriously.
But his eyes were still staring at the ground a little "distracted", as if he was observing something or thinking about something.
"You think there's something wrong with my conclusion?"
Hui Yuan Ai asked with some concern:
"In fact, it is very simple to verify:"
"If Mr. Zhang Tian can survive the rescue, he can tell the truth himself."
"If he cannot be saved, an autopsy can confirm that he died suddenly due to electric shock——"
"Although there are no current spots on the body surface, the serum creatine kinase and its isoenzyme activities in patients with electric shock injuries will be significantly increased. The changes in these serum enzymes are enough to prove that the deceased suffered an electric shock during his lifetime."
"In addition, cardiac pathological tissue sections can also be done to check myocardial damage, and atomic absorption spectrometers can be used to detect the metal content of the electric shock site."
"No no no"
Conan broke into a cold sweat and stopped this talented girl, giving a headache-inducing section of science:
"Haiyuan, I have no objection to the conclusion that Mr. Zhang Tian died of electric shock."
"I just think that his electrocution might not have been an accident."
"But he did it on purpose."
The second is later