This article in the throw-away "journal" Family Practice News caught my eye.
The article reports on a presentation given by Melonie Nance. In one of the case reports:
.. a patient was discharged in acute renal failure 30 minutes after the renal failure had been noted and documented by the critical care fellow. The fellow had entered the diagnosis into the electronic record at the end of a lengthy note but had not communicated the information to the otolaryngology resident who discharged the patient. The error was discovered quickly and the patient was readmitted 2 hours later.
The primary problem in this case was that data entry was mistaken for thorough communication. Critical patient information was hidden from the discharging physician and the record contained excessive information.
Information overload is common and preventable .. and of course, data entry is NEVER a substitute for picking up the phone and calling someone.