Microfiche vs. computerized Poisindex: the impact on time management

A prospective study was conducted to compare access-to-information times using Poisindex on microfiche versus the computerized version. A time study was conducted in 2 separate phases in the Pittsburgh Poison Center by professional time management engineers who observed certified poison information specialists. The microfiche phase was completed as a portion of a more extensive time management study, and the phase to evaluate the computerized version was completed 9 months after the system had been implemented to insure standardized competency. Access time was defined as the length of time required for the initial information to appear on either the microfiche viewer or the CRT. The average access time for microfiche use was 37.2 sec compared to 18.0 sec for the computerized version, an improvement of 106%. Based upon an annual volume of approximately 40,000 cases, the 19.2 sec savings in access time results in a time savings of 213 hours per year. To generate time savings equivalent to a 0.5 FTE position, a reduction of 1.47 min/call in the overall processing time is necessary. However, the time savings may improve patient care through easier and more extensive access to information and may allow more time for thorough documentation.