Chapter 69 The impossible cause of death by poisoning
"Open the door." Du Yu said.
The policeman next to him started looking for the keys without saying anything.
"Old Xu, go back to the forensic department." Du Yu rubbed the corners of his eyes with a bad look in his eyes: "If I don't sleep tonight, he won't be able to sleep either."
Immobilizing lynching is Du Yu's final bottom line, but besides taking action, he has many ways to make the suspect talk, among which "boiling the eagle" is the most commonly used one.
Xu Yiqing nodded. His urgent task now was to use his dissection skills.
Du Yu looked at the suspect who was led out of the single room in handcuffs, his expression calm but his eyes fixed on him.
"You think killing is fun, don't you?" He was half a head taller than the suspect and glanced sideways in front of the suspect: "I don't care what grudges you have with them, it is only natural to kill someone to pay for their life."
The suspect suddenly became very excited after hearing this, "Kill to pay for life, yes... kill for life!"
He wanted to reach out to catch Du Yu, but the policeman next to him quickly held him down.
Du Yu was not afraid at all when facing the suspect's sudden attack. He didn't even take a step back when he hit him in the chest with his shoulder.
The suspect became more and more agitated, and his speech became even more unclear, "I ask you, I ask you... how... does it count as murder! What does it count as killing someone!!"
Du Yu looked at him coldly: "I will know, and you will know too."
——
The Forensic Medicine Department building, which had been dimly lit just now, like a giant beast sleeping under the night, was now brightly lit.
Colleagues from the forensic department who lived in various parts of Jiangcheng were called back.
"I just got home." The guard sighed and sat down in the reception room. "What kind of case has this happened? I'm so anxious..."
Being able to call everyone back to work overtime shows that the case is serious, and he saw Dr. Xu's steps and back were heavy when he walked into the forensic department.
Xu Yiqing's mood is indeed heavy now.
He put on protective clothing and a medical mask and stood in the anatomy room waiting.
Lin Sheng is currently in the morgue handing over the files of the deceased to the staff from the hospital. Soon, he will push a freshly delivered corpse into the autopsy room and perform an autopsy with him.
Soon, as Xu Yiqing expected, Lin Sheng pushed the body covered with white cloth into the autopsy room.
Lin Sheng heard about Song Lang from the criminal police team. Having worked with Xu Yiqing for many years, he was all too familiar with his master's emotional changes.
Even though Xu Yiqing's face is now covered by a medical mask, Lin Sheng can still feel his mood at this moment.
So Lin Sheng sighed softly and started working: "Corpse number 207, name Song Lang, age 28, height..."
207.
The living person who was chatting in the criminal police compound two hours ago has now become a cold number.
As cold as this number is Song Lang's body at this moment.
When the white cloth covering the body was lifted, a familiar face with a pale face and a painful expression appeared in front of him.
Xu Yiqing can't remember the last time he saw an acquaintance on the autopsy table...
Definitely not his brother.
Because there is no whole body of my brother at all, only a pile of muscle tissue comparable to minced meat.
Who is it?
Xu Yiqing couldn't remember clearly. In a daze, he didn't understand why he was struggling with such a strange thing. Bringing his thoughts back to reality, he felt very uncomfortable.
The scalpel cut open Song Lang's skin with the wolf tattoo, and he used rib clamps to shorten his ribs, exposing his no longer beating heart to the air.
"Draw blood and send it for testing... both venous and arterial blood, as well as blood in the ventricles."
"Brother Xu, do you suspect poisoning?"
"I have read the files sent by the People's Hospital. Song Lang has no history of heart disease or family history. I don't believe that someone under the age of thirty will have a heart attack."
"Is it possible to die suddenly?" Lin Sheng asked: "In today's society, staying up late and working overtime have become normal. I heard from Captain Du that the deceased ran a nightclub and had trouble sleeping for a long time."
"Everyone has the possibility of sudden death. In fact, sleep disturbance does not increase the probability of sudden death. Irregular work and rest and lack of sleep do."
Stay up late and get up early, sleeping only four or five hours a day. It is a different concept than staying up at night and not waking up during the day, but lying down for nine hours.
Regardless of how Chinese medicine views staying up late, at least Xu Yiqing used forensic medicine to explain that Song Lang's physical condition was not so bad that he would die suddenly.
Moreover, there is a precedent set by the principal of No. 4 Middle School, so this must have been done by the [cleaner].
So Xu Yiqing was the first to suspect that poisoning was the method.
Arterial blood flows to the whole body, and venous blood flows back to the heart. If it is really a myocardial infarction caused by poisoning, there should be an obvious test difference between the venous blood and the arterial blood.
And then...
He cut open Song Lang's stomach, and an unpleasant smell that even a medical mask couldn't cover spread in the autopsy room.
This time, Xu Yiqing didn't need to say anything. Lin Sheng had already begun to extract Song Lang's gastric solution and blood for testing.
"And these." Xu Yiqing pointed to the tableware put into evidence bags on the cabinet at the entrance: "This is the garbage left by Song Lang after eating at the police station. Fortunately, it has not been dealt with. After a while, Also test the residue. ”
He was a little worried. If it was proven that Song Lang was poisoned after eating a box lunch, it would mean that the murderer was inside the police station!
This is probably the worst case scenario.
The laboratory technician who was soon called back to the laboratory department to work overtime received the news. He opened the internal line of the anatomy room: "Director Xu, the blood poison test will still take time, but the test results of the gastric solution residue and tableware have come out... Nothing suspicious ”
Lin Sheng was puzzled when he heard this: "Not poisoned?"
Xu Yiqing shook his head: "I still insist that it is not an accident. Please do the blood poison test faster."
After hanging up the phone, Xu Yiqing breathed a sigh of relief.
At least it shows that Song Lang was not poisoned to death because he ate lunch at the police station.
If that were the case, he would regret it for the rest of his life.
Presumably Du Yu will also blame himself for taking Song Lang to the police station and killing him.
Song Lang's autopsy was completed quickly. There was no external injury or internal bleeding. The cause of death was simple cardiac arrest. Song Lang's various painful symptoms before his death were also consistent with sudden death from myocardial infarction.
Whether it was poisoning or sudden death, everything depends on the blood poison test report. While waiting for the test results, Xu Yiqing completed the stitching of Song Lang's body. He stitched carefully and tried to leave as few traces as possible...even though the body would be cremated in the end, leaving only a pile of ashes.
"No. 207."
Xu Yiqing and Lin Sheng returned the body to the morgue. He stood in front of the morgue and touched the door of cabinet No. 208 with his palm. It was empty now.
Thinking of the phone call she received at He Yunke's funeral and the preview of the suspect in the police station, Xu Yiqing looked at Lin Sheng.
"Ah Sheng, one day you will become a unique forensic doctor, and then you will have to rely on yourself."
"Ah? Brother Xu, you want to retire?"
Xu Yiqing has just celebrated her thirty-seventh birthday. This age, let alone retirement, is a prime time for hard work in some cities.
He didn't tell Lin Sheng about the personal threats he had received, but he just didn't want him to be the one lying in cabinet No. 208.
It's not that he's afraid of death. Ever since he became a forensic doctor, Xu Yiqing has had a very open mind about life and death.
He just didn't want to lie on Jiangcheng's autopsy table because of a criminal case. After all, he had signed a body donation agreement. After his death, he wanted to donate his body to his alma mater to train more forensic doctors.
Check out the 16-9 book bar and see the correct version!
Live a few more years.
Xu Yiqing thought to herself that while she still had some ability, she could defend the deceased more, solve more cases, get less sick and be healthier, so that her body would be more in line with the cases in the textbooks.
So he must not die in the hands of the [Cleaner], and he must catch her...
Just this time!
He wants to find out the secret behind that photo, the truth about himself, and the code names that have troubled the task force for a long time.
Code name...
For no reason, Xu Yiqing suddenly thought of Zou Yi's autopsy report.
How does the mysterious man code-named [Forensic Scientist] view the career he has dedicated his life to?
Who could he be?
——
Returning to the office from the anatomy room, Lin Sheng looked at the whiteboard in the office with curiosity and surprise.
"Have you been here?"
"Why do you ask this suddenly?"
"Brother Xu, did you write these yourself?"
"Well, I suddenly thought of some inspiration about the secret room murder case in No. 4 Middle School, but before I had time to tell Du Yu, Song Lang died."
Xu Yiqing tapped the whiteboard with the back of her hand: "Take a photo."
Lin Sheng did as he was told, and then Xu Yiqing erased the whiteboard and hung the printout of Song Lang's electrocardiogram in the emergency room that was sent from the hospital on the whiteboard.
"Ah Sheng, you are a forensic doctor transferred from the Department of Surgery. You should be more familiar with electrocardiograms than me. Let's analyze together to rule out the possibility of myocardial infarction."
Xu Yiqing's statement here is to "rule out the possibility of myocardial infarction", which means that he subconsciously does not agree that Song Lang died of sudden death due to physical health.
Lin Sheng nodded and began to carefully analyze Song Lang's last electrocardiogram with Xu Yiqing.
"It's very confusing." He said: "It's definitely not acute coronary syndrome...it's very similar to myocardial infarction, but I seem to have seen this electrocardiogram case somewhere..."
Lin Sheng tried hard to recall the content in the textbook and said to himself: "Before the heart rate was completely unbalanced, the deceased had an arrhythmia for a long time. At first glance, it does look like sudden death, but the arrhythmia turns into myocardial infarction. It won’t be so abrupt.”
"What I mean by abrupt is that it's too deliberate." Lin Sheng pointed to a certain position on the electrocardiogram: "Premature contractions and dull heart sounds, the latter is one of the early symptoms of myocardial infarction, and the former may also occur. But the problem is that premature contractions are a very common arrhythmia. If Song Lang has this problem, his electrocardiogram should have such abnormal fluctuations from beginning to end."
"But in this electrocardiogram, it is obvious that Song Lang only appeared after he was sent to the hospital. His usual electrocardiogram is normal, which is not consistent with common sense."
Lin Sheng's surgical knowledge came in handy at this moment.
Xu Yiqing also understood, which meant that there was some inducement that caused Song Lang's sudden heart problem.
So he thought for a while and asked: "Is it possible that acute heart failure is caused by nerve paralysis? The abnormal electrocardiogram you mentioned is caused by the destruction of the nervous system."
Lin Sheng was stunned, but after thinking carefully for a moment, he nodded and said: "It is possible that nervous system paralysis can indeed cause acute myocardial infarction. But if this is the case, the problem will become the cause of nerve paralysis. This is equivalent to directly concluding that Song Lang was poisoned”
People can develop heart disease due to disease or health reasons.
But nerve paralysis will never occur due to one's own reasons.
The sky outside the window was getting darker, and the forensic doctor and his apprentice could basically conclude that Song Lang died of poisoning, but what kind of poison was still uncertain.
At about four o'clock in the morning, the laboratory department finally came with the final poison test report.
Lin Sheng took the report and read: "No cyanide was detected, no kun element was detected, and most poisons were eliminated."
Xu Yiqing frowned when he heard this.
No poison detected?
Lin Sheng said: "Brother Xu, there is no abnormality in the poison test, but there is something strange in the blood test... The blood electrolyte test showed abnormal concentrations of sodium, potassium, and chlorine."
Xu Yiqing was stunned when he heard this, and suddenly thought of a poison that destroys the concentration of sodium ions in the human body, thereby damaging the nervous system and causing sudden death.
"Aconitine."
Lin Sheng slapped his forehead when he heard this: "Aconitine poisoning! Song Lang was poisoned to death by aconitine!"
But then Xu Yiqing shook his head, looking confused and solemn.
"It can't be aconitine. The human body will die if it ingests 2 mg of aconitine. The poison will never take more than thirty minutes. The tests on Song Lang's gastric solution and tableware have made it clear that he was not poisoned when he ate. , if it is aconitine, he will be dead after eating.”
A new question arises, when did Song Lang become poisoned?
The possibility of poisoning dinner at the police station has been ruled out.
Song Lang drank with himself all day and in the afternoon, but other than that, he didn't drink anything.
To put it bluntly, even if he was poisoned at that time, he should have died from the poison long ago.
What's more, I drank the same bottle of wine as Song Lang, how could I be okay?
(End of chapter)