Advanced ICU Offers a Virtual Eye on Patients

Case study: MetaVision helps hospital keep a constant vigil on patients.

As director of critical care services at Lehigh Valley Hospital in Allentown, Pa., Dr. Steve Matchett knows that he faces a chronic manpower shortage and must marshal his resources wisely to maintain quality health care.

He just marshals them virtually.

Since 2004, Lehigh has operated the Advanced ICU. Patients are monitored by machine, with software that weaves medical data into one comprehensive record, and data is transmitted to doctors at a control room several miles away. The doctors then send instructions back to nurses and other staff on-site, or even talk with family members who are present in the patients room.

Telemedicine itself, of course, is not a new concept; doctors have zipped digitized medical images across data lines for years. But Lehighs ICU goes beyond that, networking various medical devices and databases into one detailed history of a patient. Doctors at the far end of the data line can explore that history as they see fit and complement that picture with fresh information from two-way cameras and microphones focused on individual beds.

/zimages/3/28571.gifClick here to read about how the Digital Medical Archive came up with a solution to manage and store mammography images.

"Weve built our system on the medical record … and then layered the telemedicine piece on top of it, rather than just putting the telemedicine in the ICU and letting the ICU function with whatever workflow system they had," Matchett said. "For us, this was a much more sweeping change in the way we deliver services."

The hardware for the system was straightforward, Matchett said. Lehigh purchased audiovisual equipment (including high-resolution cameras that can even depict dilation of a patients pupils) from Vistacom Information Systems, in Exton, Pa. Medical devices—from heart monitors to urinalysis machines to thermometers—came from a variety of manufacturers. The telecommunications infrastructure also required little attention, since the hospital already had a strong fiber-optic system to handle X-rays and other large data files.

Instead, Matchett said, the principal challenge was to find the right underlying software to interface with all those medical devices and systems and to create the virtual patient record. A priority was to integrate that software with Lehighs existing physician-order-entry application, LastWord, from IDX Systems, to avoid the cost of purchasing another new system.

That quickly narrowed the field to a few medical-software vendors, and Lehigh ultimately approached IMDsoft, in Needham, Mass. IMDsofts MetaVision ICU product works by supplying device drivers for medical equipment and mapping data points against a library of events that Lehigh wants to monitor—say, tracking both blood pressure and temperature and alerting doctors when both fluctuate at once (indicating more serious trouble than if either vital sign fluctuated alone).

/zimages/3/28571.gifA Boston hospital uses ultrasound to track its patients. Read more here.

"This is an event manager more than anything else," said Steve Sperrazza, IMDsofts national sales manager. "Once [a data point] enters the system, we control it. … That was a very key feature."

MetaVisions flexibility allows hospitals to integrate more pieces of equipment into the system simply by building the right data driver. Lehigh, for example, integrated its medical lab so that doctors can see the results of blood work in a patient record within 90 seconds of lab technicians finishing the job. Doctors can also create "algorithms" for each patient, stringing together scenarios that merit various levels of attention from nurses or doctors.

Matchett decided on MetaVision at the end of 2003 and spent the next nine months working with IMDsoft engineers to develop the ICUs software systems. In September 2004, Lehighs 28-bed Advanced ICU opened for business.

Software aside, the most impressive part of Lehighs ICU is the control room: eight high-resolution monitors in a two-person workstation manned 24 hours a day by a critical-care doctor and an ICU nurse using another IMDsoft application called MVcentral. Lehighs IT department installed the system itself, consulting with IMDsoft and Vistacom.

How does it all work? Nurses and staff physicians routinely stroll the floors of Lehighs ICU wards (the hospital has since expanded its Advanced ICU to 72 beds in three separate buildings) to monitor patients in their rooms. A PC sits at each bed, where medical staff can enter their observations. That information, along with data from a patients medical devices, is fed into a server that compiles the virtual record for that patient.

Assuming the patient is doing well, that virtual record zips off to the ICU control room and waits for review by the critical-care technician. When the technician pulls up the record on one of the monitors, cameras automatically queue up a real-time image of the patient that the doctor can study while reviewing the persons health. The doctor can then send further instructions to the ICU nursing station or to the PC at each Advanced ICU patients bedside, all electronically.

"This system closes the loop on information," Sperrazza said.

Next Page: When things go wrong, MetaVision comes to the rescue.