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It is often difficult to tell which patients with acute abdominal pain will require surgery. We studied 79 patients with acute abdominal pain who were thought likely, though not unequivocally, to have abdominal problems requiring surgery. All underwent laparoscopy and only 27 subsequently required open laparotomies. The accuracy rate as determined by followup was 99%. The liberal use of laparoscopy for uncertain cases of appendicitis resulted in a negative appendectomy rate of only 2.2%. There were no deaths and no major complications.

A discussion of the reasons why provision of information regarding pressure sore prevention to patients with spinal cord injury is not always effective in preventing the development of sores

Event handling is a feature that has recently been added to many APL systems. IBM's VSAPL release 4.0 and APL2 include a dyadic system function DEA (Execute Alternate)" which provides a simple event handling facility.This dyadic function can easily be simulated using the event handling facilities offered by other vendors.