Chapter 3: What the Numbers Already Knew
Dr.
Harris returned eighteen minutes later.
He held a printed lab report and a tablet showing echo images.
He looked at me first — not at Margaret, not at Walter, not at Sienna.
At me.
"The complete chemistry panel is back," he said.
I took the printout.
My eyes moved down the columns the way they always did — automatically, scanning for the number that didn't belong.
It was the potassium.
Critically low.
2.1 milliequivalents per liter.
The reference range began at 3.5.
A potassium of 2.1 could produce exactly what Adrian had presented with.
Hypotension.
Ventricular ectopy.
That brief run of tachycardia that had caught everyone's attention and sent the surgical team reaching for consent forms.
It could also be caused by something far less dramatic than a torn aorta.
"Has he received any diuretics recently?" I asked.
"Prescribed or otherwise?"
Dr.
Harris paused.
"Not that we were made aware of."
"What about over several weeks?
Recurring symptoms?
Fatigue, cramping, dizziness on standing?"
"His history is limited.
We've only had the information provided at the scene."
I looked at Sienna.
She was standing very still near the wall, both arms crossed, watching me with an expression I had not seen on her face before.
Not fear exactly.
Something more careful than fear.
"Did he complain of cramps recently?" I asked her.
"Leg cramps, muscle weakness, feeling lightheaded?"
"I wouldn't know," she said.
"I'm just his assistant."
She had used that phrase twice now.
"You had dinner with him," I said.
"At your apartment.
At nine in the evening.
And he collapsed at three in the morning.
That's six hours.
In that time, did he seem unwell?"
"He seemed tired."
"Tired how?"
"He fell asleep on the sofa."
Margaret made a sharp sound.
"This is outrageous.
You're treating this girl like a suspect while my son is—"
"Margaret." Walter's voice was quiet but firm.
It was the first time I had heard him speak with anything other than exhaustion.
"Let her finish."
Margaret turned to look at her husband.
Walter didn't look back at her.
He was watching me.
I turned to Dr.
Harris.
"I want to hold surgical consent pending repeat imaging.
If his potassium is this low, I want to know whether this is a primary cardiac event or a metabolic collapse that mimicked one.
The treatment paths are different.
Significantly."
"The cardiothoracic team has already been briefed on the dissection working diagnosis."
"Then rebriefs them." I set the lab report on the counter between us.
"A potassium of 2.1 explains his arrhythmia.
It explains his hypotension.
It does not rule out a dissection, but it changes the probability considerably.
I need the CT angiogram reviewed by someone who isn't already committed to a surgical plan."
Dr.
Harris looked at me for a long moment.
Then he picked up the lab report.
"I'll get the attending cardiologist."
He walked back through the doors.
The hallway felt different after he left.
Margaret had gone very quiet.
Sienna had not moved from the wall.
Walter sat down slowly in one of the plastic chairs, as though his legs had decided the conversation was over without telling him.
I looked at Sienna again.
"The potassium doesn't get that low overnight," I said.
"That kind of depletion takes time.
Weeks, sometimes."
She said nothing.
"If someone were taking a medication that depleted potassium — a diuretic, for example — and they weren't being monitored, and they were drinking alcohol, their levels could fall to a point where the heart becomes dangerously unstable." I paused.
"Was he drinking tonight?"
A flicker.
Very small.
In the muscles around her eyes.
"There was wine with dinner."
"How much wine?"
"I don't know.
A bottle.
Maybe more."
Walter's head came up.
I kept my voice level.
"And the medication in his bathroom cabinet at home — I checked it this morning before I left.
His blood pressure prescription.
The one he's been on for two years."
Sienna blinked.
"It was nearly empty," I said.
"He filled it six weeks ago.
It should have had three weeks of tablets left."
The hallway was completely silent now.
"That's a lot of a potassium-wasting medication for a man whose potassium tonight was two point one."
Sienna's chin lifted slightly.
"I told you.
I'm just—"
"His assistant." I nodded.
"I know."
Walter stood up from the plastic chair.
He walked toward Sienna slowly.
He stopped two feet in front of her and looked at her for a long time without speaking.
Then he turned to Margaret.
"How long?" he said.
Margaret's handbag strap slid from her elbow to her wrist.
"Walter—"
"How long have you known about this apartment?"
The silence that followed was the loudest thing in that corridor all night.
Margaret's mouth opened.
She looked at me once — just once — and in that single glance I saw something I had not expected.
Not defiance.
Not contempt.
Something that looked almost like guilt.
She looked away before I could be sure.
And then the doors at the end of the corridor opened, and the attending cardiologist walked through them with Dr.
Harris, and the moment broke apart like glass on a hard floor, and everyone rearranged their faces and their hands and their positions as if none of it had happened.
May you like
But Walter had asked the question.
And Margaret had not answered it.
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