[Medical Human Story – The Boundary of Life] Episode 49 – The Night of Crimson Rain(1)
Ascending Transtentorial Herniation and Duret
Hemorrhage
Prologue: The Pulse of Stopped Time
The nights in hospital corridors are never truly silent.
Under the cold glare of fluorescent lights, wheeled stretchers glide
quietly past, while the rhythmic hum of ventilators echoes like surrogate
heartbeats. The air, thick with antiseptic and metallic undertones, forms a
space where life and death cross paths at every moment—a fragile boundary
between existence and oblivion.
My name is Elias Lee, a neurosurgeon who has worked here for
seventeen years.
The tension of the operating room, the desperation in the eyes of
patients’ families, and the destiny of confronting lives that cannot be saved, no matter how fiercely we fight—these have all shaped me. Yet they have never
dulled my senses or hardened my heart.
Tonight, once again, I sensed that this would not be an ordinary night.
The unusually hushed atmosphere in the emergency department whispered that
something ominous was approaching.
And that premonition proved true.
The Beginning of the Crimson Rain
“Emergency arrival! Sixty-one-year-old female, sudden loss of
consciousness, absent pupillary reflex!”
The automatic doors burst open, letting in a rush of icy night air.
Simultaneously, a woman was wheeled in on a stretcher. Her body lay limp, her
face pale as though the very concept of vitality had abandoned her.
Beside her, a middle-aged woman staggered forward, suppressing sobs.
“Mom… Mom… please…”
I immediately assessed the patient. Bilateral fixed and dilated pupils. No
light reflex. A precipitous drop in blood pressure. Irregular pulse.
All signs pointed to one conclusion.
Brainstem compression. And imminent brain herniation.
“Straight to CT. Now.”
The stretcher tore down the hallway, its wheels scraping against the floor
like claws raking time itself.
The CT scanner roared to life, rotating as cross-sectional images
illuminated the screen.
And I froze.
A massive hemorrhage engulfed the entire left cerebellar hemisphere.
The blood had already compressed the fourth ventricle, forcing the
brainstem upward.
“…Ascending transtentorial herniation.”
The words escaped my lips in a whisper.
Ascending Transtentorial Herniation – A Fatal Ascent
“Doctor… what does that mean? Is my mother going to be okay?”
The woman—clearly the patient’s daughter—stepped closer. Her hands
trembled uncontrollably, terror threatening to shatter her composure.
I gestured toward the CT monitor.
“Do you see this? This is the cerebellum. And this line here is the
tentorium.”
She nodded, though she clearly did not understand.
“Because of the hemorrhage, the lower part of her brain is being pushed
upward. This is called ascending transtentorial herniation.”
Her eyes quivered.
“This is extremely dangerous. When the brainstem is compressed, the
centers that control breathing and heartbeat are damaged.”
“Then… my mother…”
I paused.
“At this very moment, she is standing on the threshold between life and
death.”
The Worst Discovery – Duret Hemorrhage
I magnified the brainstem section on the CT scan.
And then, my heart nearly stopped.
A small but unmistakable hyperdense lesion in the central midbrain.
Duret hemorrhage.
“……”
Even after thousands of surgeries, the sight never fails to instill
despair.
As the brain herniates, penetrating branches of the basilar artery are
stretched and torn, causing deep hemorrhage within the brainstem. This is not
merely bleeding—it is evidence of catastrophic brainstem destruction.
“Duret hemorrhage as well…”
The resident beside me clenched his jaw.
“Can we save her?”
I hesitated.
“Statistically… more than 90% mortality. Even survivors are left with
profound disabilities.”
Silence fell heavily.
Facing the Daughter
“Doctor… please tell me the truth.”
Her tear-soaked eyes met mine.
“The probability of your mother passing away is very high.”
Her lips turned white.
“But… without surgery, the chance is 100%.”
I continued, “What we can attempt now is emergency decompression surgery.
The success rate… honestly, less than 10%.”
She collapsed to the floor.
“Still… please do it. Please… save her.”
I took her trembling hands.
“I will do everything in my power. That is a physician’s duty.”
When the Crimson Rain Began
As the stretcher rolled into the operating room, the ECG traced erratic
waves.
Beep— Beep— Beep—
It sounded like the dying heartbeat of time itself.
“Begin anesthesia!”
“Prepare craniotomy!”
Under the surgical lights, I inhaled deeply.
Tonight, I would battle not only a human brain, but also a family’s
fate—and my own convictions.
Ascending transtentorial herniation.
Duret hemorrhage.
The two most feared words in neurosurgery stood before me.
Once again, I stepped onto the boundary of life.
Part I: The Posterior Fossa — The Narrowest Prison
The sound of the operating room doors closing is always the same.
But its meaning is never identical.
Tonight, it rang like a bell, testing the limits of human survival.
“Maintain deep anesthesia. Keep systolic pressure above 100. Prepare ICP
monitoring.”
Cold instructions spilled from my lips as I moved toward the patient’s
head. Under the brilliant surgical lights, her face lay motionless—silent, yet
screaming in ways no one could hear.
This silence was not calm.
It was the brainstem suffocating.
The Cruel Confines of the Posterior Fossa
“Bring up the CT again.”
The images were horrific. Massive cerebellar hemorrhage, severe upward
displacement of the brainstem.
“The posterior fossa… it’s merciless,” murmured my fellow, Jung-woo.
The posterior fossa is the smallest compartment of the cranial cavity,
housing the cerebellum, pons, medulla, and vital cranial nerve nuclei. These
structures regulate life itself.
And that is precisely why hemorrhage here is so lethal.
Even minimal swelling causes catastrophic pressure, precipitating
herniation.
The Daughter and Shattered Time
In the waiting room, Seo-yeon sat rigid, her hands clenched together. The
ticking clock thundered in her ears.
Tick— Tick— Tick—
Her last conversation with her mother replayed endlessly.
“I told you we should go to the hospital.”
“I’m fine. Just dizzy.”
“My head hurts so badly…”
Then vomiting. Then collapse.
“I should have insisted…”
But cerebellar hemorrhage strikes without warning.
Into the Crimson Storm
“Bone removal complete.”
The swollen cerebellum bulged into view.
“Pressure is extreme.”
Dark blood flowed as I evacuated the hematoma.
Like the brain itself was weeping.
Slowly, the pulsation returned.
“ICP dropping—38 to 24.”
But the Duret hemorrhage remained unreachable.
That territory was beyond the surgeon’s blade.
“From here on… It’s God’s domain.”
Elias Lee’s Memory
Twelve years old.
My father collapsed from a brain hemorrhage.
“Subtentorial herniation… less than 10% chance.”
He died that night.
And I vowed never to abandon hope unless the probability was truly zero.
Suturing and Waiting
After 4 hours and 47 minutes, the surgery ended.
Part of the skull was left open to allow swelling.
“Now… we wait.”
ICU – Frozen Time
In the ICU, only machines breathed.
Seo-yeon held her mother’s hand.
“Mom… I’m here.”
Physician and Family – The Border of Truth
“The surgery went as well as possible,” I said.
“Will she live?”
“The next 72 hours are critical. Brain damage is unavoidable.”
“But as long as she lives… that’s enough.”
A Faint Light Called Hope
As I turned to leave, I saw it.
A faint flicker of pupillary reflex.
“…She’s still alive.”
“Could this be a miracle?”
I nodded.
Miracles always begin beyond statistics.
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