Jill Tucker, RN says:

“Excessive noise on the hospital floor can inhibit rapid patient recovery. Machinery and new technology, meant to monitor patients and offer relief to the beleaguered nursing staff, routinely beeps, buzzes and rings. Nurses and assistants, their ranks reduced by cost-cutting measures, cannot answer all the alarms. The best machinery can assist, but never replace, the human element.”
The Clatter of the Hospital Room

NY Times Well blog  August 2, 2012