From The House of God, Chapter 4:
"Seventy over forty," said Maxine.
"Good," said Fats, and kicked the pedal. The electric gomer bed roared into action. In less than thirty seconds Mr. Rokitansky was virtually upside down on his noggin, his feet pointing at forty-five degrees and his head jammed against the headboard, down below at the other end.
"Blood pressure, Max? Mr. Rokitansky, how ya doin'?"
Although Mr. Rokitansky didn't look like he was doing too good, as Maxine tried to read his BP - blood pressure - from his nearly vertical arm, he said:
"One hundred and ninety over one hundred," said Maxine.