BOSTON - The healthcare industry is sitting up and taking notice after one of Massachusetts' best-known hospitals suffered network slowdowns and interruptions for more than three days earlier this month.

The incident at Beth Israel Deaconess Medical Center  prompted its CIO to go public with the network problems, in the hope of educating other healthcare IT executives that might have similarly vulnerable networks.

Dr. John Halamka is CIO of CareGroup Healthcare System  and an advocate of healthcare computing. Beth Israel Deaconess is the keystone asset of the CareGroup healthcare network, which consists of five Massachusetts hospitals and more than 1,800 physicians. The IT infrastructure at Beth Israel Deaconess has been singled out among healthcare corporate networks for its cutting-edge use of Web-enabled and wireless applications.

Last week Halamka told the story of his network woes at a meeting of healthcare CIOs held at Massachusetts Health Data Consortium, a nonprofit corporation aimed at developing and disseminating healthcare information. He detailed the cause, effects and resolution of the hospital's network problems.

The contagion turned out to be compute-intensive analytic software. When a researcher launched it, the software triggered enormous levels of network traffic. The overload slowed systems significantly, causing intermittent problems with e-mail, data entry and Web access to patient records and prescriptions.

The network interruptions occurred every four to six hours, so the hospital decided to revert to paper processes to minimize the disruption caused by having to switch between automated and manual processes every few hours, Halamka says.

Additional details about the cause of the network failure were not available.

Analysts say such incidents might become common in healthcare facilities - which have a history of underinvesting in IT, compared with other industries - as their network systems accumulate and age.

Gartner reports that healthcare companies devoted an average of 2.5% of revenue to IT spending in 2002, compared with 8.9% among telecom companies and 6.6% among banking businesses. Concerns about the business value of IT and the maturity of healthcare solutions are two inhibitors to healthcare IT spending, according to Gartner.