Related Clues:

• ASAP in the OR
• Pronto, on a memo
• Doctor's directive
• 40-Across, e.g.
• Trump's "today!"
• Without hesitation
• On the double!
• E.R. order
• Immediately, to a surgeon
• "Stat!"
• P.D.Q. in the I.C.U.
• Memo letters
• ER order
• ER command
• Diamond datum