Steris | Na340

The logbook entry for the Steris NA340 was always the same:

Nine minutes left, she thought. Fine.

Elena’s training screamed at her. Contaminant. Contain it. She stepped forward, her hand shaking as she reached for the heavy door. The heartbeat grew louder, faster. It wasn’t coming from the machine anymore. It was coming from inside her own chest , syncing with the rhythm of the dark. steris na340

But then the internal vacuum seal hissed, not once, but three times. Hiss. Hiss. Hiss. Like a code. Elena wiped her hands on her scrubs and walked over. The thick circular door, usually cool to the touch, was warm. Not the normal post-cycle warmth. This was feverish.

It started with a sound. Not the usual mechanical whir, but a wet, breathy sigh, like the machine had just remembered it was alive. Elena was the only one in the department at 3:00 AM. The graveyard shift was for catching up on instrument trays, and she was elbow-deep in a set of micro-scissors. The logbook entry for the Steris NA340 was

In the morning, the day shift supervisor would find the room empty. Elena’s coffee was still warm. The instrument trays were half-finished.

And the Steris NA340 would be purring quietly, its display showing a single, happy message: Contaminant

That’s when the door began to cycle on its own. The locking ring spun— ker-chunk, ker-chunk, ker-chunk —and the thick metal door swung open.