"I'm placing a radial arterial line. Both hands are occupied, my eyes are on the wrist. That's exactly when I need to know what's happening."
It's 8:12 AM. An anesthesiologist is placing a radial arterial line on a patient undergoing a four-hour hepatic resection. Both hands are in sterile field. Ultrasound probe in the left, needle in the right. She cannot look at the monitor.
The subtle yellow bar appears at the top edge of her Ray-Ban glasses. MAP 62 mmHg — trending down. Not critical yet. She asks the CRNA to bolus phenylephrine 100 mcg without removing her hands from the field. The arterial line is placed successfully. MAP recovers to 74 mmHg before she finishes.
The same system monitors three other rooms while she works. When she stands up, a green status bar confirms all other cases are stable.