Chapter 69: Impossible Cause of Death by Poisoning

Chapter 69: Impossible Cause of Death by Poisoning

Chapter 69: Impossible Cause of Death by Poisoning

"Open the door." Du Yu said.

The police officer next to him started looking for the keys without saying a word.

"Lao Xu, go back to the forensic department." Du Yu rubbed his eyes and looked unkind: "If I don't sleep tonight, he won't be able to sleep either."

Not lynching is Du Yu's last bottom line, but besides taking action, he has many other ways to make suspects speak, among which "starving the eagle" is the most commonly used one.

Xu Yiqing nodded. His most important task now was to use his anatomical skills.

Du Yu looked at the suspect who was led out of the single room in handcuffs. His expression was calm but his eyes were fixed on him.

"You think killing people is fun, don't you?" He was half a head taller than the suspect, standing in front of him and glancing at him: "I don't care what hatred you have with them, killing someone means paying with your life."

The suspect suddenly became very excited after hearing this, "Kill for life, yes...kill for life!"

He wanted to reach out and grab Du Yu, but the police officer next to him quickly held him down.

Du Yu was not afraid at all when faced with the suspect's sudden attack. He did not retreat even a single step and was hit in the chest by his shoulder.

The suspect became more and more agitated, and his speech became more and more unclear. "I ask you, I ask you...how...what counts as murder! How does it count as murder!!"

Du Yu looked at him coldly: "I will know, and you will know too."
-
The Forensic Department building, which was dark just now like a giant beast sleeping in the night, is now brightly lit.

All the colleagues from the Forensic Department who lived in various places in Jiangcheng were called back.

"I just got home." The guard sighed and sat down in the reception room. "What kind of case has happened? Why are you in such a hurry..."

The fact that they called everyone back to work overtime showed that the case was very serious, and he saw that Dr. Xu's footsteps and back looked heavy as he walked into the Forensic Department.

Xu Yiqing is indeed feeling heavy-hearted right now.

He put on protective clothing and a medical mask and stood in the autopsy room waiting.

Mr. Lin is now in the morgue handing over the deceased's files with the staff from the hospital. Soon, he will push a newly delivered corpse into the autopsy room and perform an autopsy on it together with himself.

Soon, as Xu Yiqing expected, Lin Sheng pushed the corpse 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 very familiar with his master's emotional changes.

Even though Xu Yiqing's face was now covered by a medical mask, Lin Sheng could still feel his mood at the moment.

So Lin Sheng sighed 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 corpse was lifted, a familiar face with a pale complexion and painful expression appeared before our eyes.

Xu Yiqing couldn't remember the last time he saw someone familiar on the dissection table...

It’s definitely not my brother.

Because my brother’s body was not complete at all, there was only a pile of muscle tissue that was comparable to minced meat.

Who is it?
Xu Yiqing couldn't remember clearly. In a trance, he didn't understand why he was entangled in such a strange place. Pulling his thoughts back to reality, he just felt very uncomfortable.

The scalpel cut open Song Lang's skin with a wolf tattoo, and the rib clamps shortened his ribs, exposing a heart that was no longer beating to the air.

"Draw blood and send it for testing...venous blood, arterial blood, and blood from the ventricles."

"Brother Xu, do you suspect it's poisoning?"

"I've read the files sent by the People's Hospital. Song Lang has no history of heart disease, nor does he have a family history of heart disease. I don't believe that someone under 30 years old would have a sudden heart attack."

"Is it possible that he died suddenly?" Lin Sheng asked, "In today's society, staying up late and working overtime have become the norm. I heard from Captain Du that the deceased ran a nightclub and had been sleeping inverted for a long time."

"Anyone is at risk of sudden death. Sleep disturbance does not increase the risk of sudden death. Irregular work and rest schedules and lack of sleep do."

Staying up late and getting up early, sleeping only four or five hours a day, is different from not sleeping at night and not waking up during the day, but lying down for nine hours.

Regardless of how traditional Chinese medicine views staying up late, at least according to Xu Yiqing's explanation using forensic knowledge, Song Lang's physical condition was not so bad that he would die suddenly.

Moreover, with the precedent set by the principal of No. 4 Middle School, this must have been the work of the cleaner.

Therefore, Xu Yiqing first suspected that the method was poisoning.

Arterial blood flows to the whole body, and venous blood flows back to the heart. If the myocardial infarction is really caused by poisoning, there should be an obvious difference in the test results between venous blood and arterial blood.

Then...

He cut open Song Lang's stomach, and an unpleasant smell that even a medical mask could not cover filled the autopsy room.

This time, without Xu Yiqing's order, Lin Sheng had already started extracting Song Lang's gastric fluid and sending it for testing together with his blood.

"And these." Xu Yiqing pointed to the tableware in evidence bags on the cabinet at the entrance: "This is the garbage Song Lang left after eating at the police station. Fortunately, it has not been processed. I will go to test the residue later."

He was a little worried. If it was proven that Song Lang was poisoned by the lunch box, it would mean that the murderer was inside the police station!

This is probably the worst case scenario.

Soon, the laboratory technician who was called back to the laboratory to work overtime came back with the news. He called the internal line of the autopsy room and said, "Director Xu, the blood toxicology test will take time, but the results of the gastric solution residue and tableware tests have come out... There is 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 a quick blood toxicology test."

After hanging up the phone, Xu Yiqing breathed a sigh of relief.

At least it proves that Song Lang was not poisoned because of eating lunch in the police station.

If that were the case, he would regret it for the rest of his life.

I guess Du Yu would also blame himself for taking Song Lang to the police station and ending up killing him.

The autopsy on Song Lang was completed quickly. There were no external injuries or internal bleeding. The cause of death was simple cardiac arrest. The various painful symptoms Song Lang suffered before his death were also consistent with the manifestations of 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 finished stitching up Song Lang's body. He sewed it very carefully, trying to leave as few traces as possible...even if the body will eventually be cremated, leaving only a pile of ashes.

"No. 207."

Xu Yiqing and Lin Sheng sent the body back to the morgue. He stood in front of the morgue cabinet and stroked the door of cabinet No. 208. It was now empty.

Thinking of the phone call he received at He Yunke's funeral and the preview of the suspect at the police station just now, Xu Yiqing looked at Lin Sheng.

"Ah Sheng, one day you will become a forensic doctor on your own, and then you will have to rely on yourself."

"Ah? Brother Xu, are you going to retire?"

Xu Yiqing just celebrated his 37th birthday. At this age, let alone retirement, it is actually the golden period for working hard in some cities.

He did not tell Lin Sheng about the personal threats he had received, but he just didn't want to be the one lying in cabinet No. 208.

It’s not that he is afraid of death. Ever since Xu Yiqing became a forensic doctor, he has become very open-minded about life and death.

He just didn't want to lie on the dissection table in Jiangcheng 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.

Live a few more years.

Xu Yiqing thought that while he still had some ability, he should redress more grievances for the deceased, solve more cases, get sick less and be healthier, so that his corpse would be more in line with the cases in the textbooks.

So he absolutely couldn't die at the hands of the [Cleaner], and he had to catch her...

Just this time!

He wants to find out the secret behind the photo, the truth about himself, and the code names that have been bothering the task force for a long time.

Codename...

For no apparent reason, Xu Yiqing suddenly thought of Zou Yi's autopsy report.

How does the mysterious man code-named "Forensic Doctor" view the career to which he has devoted his life?
Who could he be?
-
After returning to the office from the autopsy room, Lin Sheng looked at the whiteboard in the office with curiosity and surprise.

"Master's wife has been here?"

"Why do you ask this suddenly?"

"So, did you write these yourself, Brother Xu?"

"I guess so. I suddenly had some ideas about the murder case in the secret room of No. 4 Middle School. However, before I could tell Du Yu about it, Song Lang died."

Xu Yiqing tapped the whiteboard with the back of his hand: "Take a picture."

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 sent by the hospital on the whiteboard.

"Ah Sheng, you are a forensic pathologist who was transferred from the surgery department. You should be more familiar with electrocardiograms than I am. Let's analyze it together to rule out the possibility of myocardial infarction."

The statement Xu Yiqing used here is "ruling out the possibility of myocardial infarction", which means that he subconsciously still does not accept that Song Lang died suddenly while in good health.

Lin Sheng nodded and began to carefully analyze Song Lang's last electrocardiogram with Xu Yiqing.

"It's very chaotic." 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 what he had read in the textbook, and muttered to himself, "Before the heart rate became completely unbalanced, the deceased had an irregular heartbeat for a long time. At first glance, it does look like sudden death, but it's not so sudden for an irregular heartbeat to turn into a myocardial infarction."

"What I meant by abrupt is 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. The former may also appear. But the problem is that premature contractions are very common arrhythmias. If Song Lang has this problem, his electrocardiogram should have this abnormal fluctuation from beginning to end."

"But in this electrocardiogram, it is obvious that Song Lang only appeared after being sent to the hospital. His electrocardiogram is usually normal, which is not in line with common sense."

Lin Sheng's surgical knowledge came in handy at this moment.

Xu Yiqing also understood what he meant, which was that there was some triggering factor that caused Song Lang to suddenly have heart problems.

So he thought about it and asked, "Is it possible that it is acute heart failure caused by nerve paralysis? The abnormal electrocardiogram you mentioned is caused by the damage to the nervous system."

Lin Sheng was stunned, but after thinking carefully for a moment, he nodded and said, "It is possible. Nervous system paralysis can indeed cause acute myocardial infarction. But if this is the case, the problem will become the cause of nerve paralysis, which is equivalent to directly concluding that Song Lang was poisoned to death."

People can develop heart disease due to illness or health reasons.

But you will never suffer from nerve paralysis due to your own reasons.

The sky outside the window gradually brightened. The forensic doctor and his apprentice could basically conclude that Song Lang died of poisoning, but they were not sure what kind of poison it was.

Around four in the morning, the laboratory finally received the final toxicology test report.

Lin Sheng read the report: "No cyanide was detected, no Kun element was detected, and most of the poisons were ruled out."

Xu Yiqing frowned when he heard this.

No poison detected?

Mr. Lin said, "Brother Xu, the toxicology test showed no abnormalities, but the blood test showed something strange... The blood electrolyte test showed abnormal concentrations of sodium, potassium, and chloride."

Xu Yiqing was stunned when he heard this, and suddenly thought of a poison that destroys the sodium ion concentration in the human body and thus damages the nervous system, 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 puzzled and solemn.

"It can't be aconitine. A person will die if they ingest 2 mg of aconitine, and the onset of poisoning will never exceed thirty minutes. The test on Song Lang's gastric solution and tableware has made it very clear that he was not poisoned when he ate. If it was aconitine, he would have died after the meal."

A new question arises: when did Song Lang get poisoned?

The possibility of the dinner being poisoned in the police station has been ruled out.

Song Lang only drank with himself in the afternoon and didn't drink a single drop of water the whole day.

Even if he was poisoned at that time, he should have died from the poison long ago.

What's more, he and Song Lang drank from the same bottle of wine, so how come he was fine?

(End of this chapter)