• Eisuke Hanada, Tadayoshi Fujiki, Hideaki Nakakuni, and Corbet Vernon Sullivan.
• Division of Medical informatics, Shimane University Hospital, Enya-cho 89-1, Izumo, 693-8501, Japan. e-hanada@med.shimane-u.ac.jp
• J Med Syst. 2006 Apr 1;30(2):101-6.

AbstractIn large hospitals, collaborative clinical practice is currently emphasized, with members of various departments expected to work as a team. The importance of accurate communication among the team members is of utmost importance. To improve such communication, the introduction of mobile voice communication systems has received much attention in Japan. Shimane University Hospital also introduced a Personal Handy-phone System (PHS) for doctors. In the traditional setting, much time was wasted searching for doctors through multiple calls on fixed-line telephones. In order to measure the effectiveness of our system, the change in the number of calls made on fixed-line telephones before and after PHS installation was compared. The total number of calls was reduced by more than 35%, and the number of calls to the wards on weekdays was reduced by half. Mobile telecommunication systems with small output power, such as PHS, are known to cause little interference with medical devices which makes it possible to use mobile voice communication safely in hospitals. The improvement in communication by this systems resulted in an improvement in labor efficiency.

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