High-tech sensors help seniors live independently

COLUMBIA, Mo. -- After back-to-back hospital visits for congestive heart failure, Eva Olweean figured her health was back to normal. But the nurses at her retirement home knew better: Motion sensors in the 86-year-old's bed detected too many restless nights.

Tiny sensors hover unobtrusively over the toilet, shower and doorways to detect Olweean's movements inside her apartment. Pneumatic tubes tucked in the mattress and beneath her easy chair measure weight shifts. Caregivers and researchers at the University of Missouri-Columbia study the data, noting changes in behavior that could signal medical problems.

Recognizing the coming "silver tsunami" of graying baby boomers, tech companies are racing to help aging Americans spend more time living independently instead of in nursing homes. For the first time earlier this month, the International Consumer Electronics Show in Las Vegas featured a special section devoted to high-tech senior living.

Among the advances at the show were motion sensors, the kind that allowed Olweean's nurses to figure out what was keeping her up at night. She was experiencing excessive bloating, a common symptom of congestive heart failure. So Olweean's cardiologist prescribed diuretics and made other adjustments to her medication that helped the woman again sleep soundly.

"We try to identify when those small problems occur, so we can fix them before they become big problems," said Marjorie Skubic, an electrical and computer engineering professor who works with Sinclair School of Nursing researchers on the aging-in-place project.

At Oatfield Estates in the Portland suburb of Milwaukie, Ore., resident movements in the private retirement home are tracked by what employees call "bed bugs." Those are embedded motion sensors that detect when someone's behavior could trigger a medical alert.

Sensors like those, "smart carpets" and other tracking devices will be the norm in both private homes and group settings within the next decade, said Jason Hess, chief executive officer of Elite Care, the Portland company that owns Oatfield Estates. He said that will especially be true as insurers start embracing the cost-saving devices.