The bed cart only shuttled back and forth between the outside of the operating room and the folding beds, never entering the operating theater. Every time Ye Nai came out to wash her hands, she didn't mind the trouble of changing shoes back and forth.
The second patient began receiving treatment; outside, the warriors guarded their comrades with IV drips while keeping in touch with the rear via radio. The support team was already on its way, but it would take several hours to arrive.
By the time the support squad was halfway there, Ye Nai had already finished treating all the patients. They were lined up on folding beds, receiving IV drips and sleeping peacefully.
They wouldn't be woken up; rather, a Mutant Plant Extraction Liquid with anesthetic properties was used instead of general anesthesia, and they would naturally wake when the time came.