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Mayo Clinic: Tool Helps Chest Pain Patients Decide on Tests, Cuts ER Costs
ROCHESTER, Minn. — Patients who went to the emergency room with chest pain but were at low risk for a heart attack were less likely to seek more tests after their conditions were explained to them using an educational tool known as a decision aid, a Mayo Clinic study found.
MULTIMEDIA ALERT: A sample chest pain decision aid and excerpts from an interview with Dr. Hess are available on the Mayo Clinic News Blog.
Chest pain is the No. 2 reason people seek emergency care at U.S. hospitals. It accounts for about $8 billion in health care costs annually, researchers estimate.
"To avoid missing a diagnosis of heart attack — which could have substantial medical and legal implications — emergency physicians often admit patients to observation units for stress testing, even though patients are at a very low risk for heart attack," says lead author Erik Hess, M.D., a Mayo Clinic emergency room physician. "This results in false-positive test results, unnecessary additional procedures, exposure to radiation and increased cost."
Researchers randomly assigned 204 chest pain patients at low risk of heart attacks additional counseling through a decision aid — a tool that summarizes the evidence and helps educate and engage patients in making decisions about their care — or the typical care. The decision aid included initial results of the patient's chest pain diagnosis, the patient's personal risk for heart attack within the next 45 days and a menu of evaluation options ranging from urgent cardiac stress testing to making an appointment with a primary care doctor within 72 hours.
Both patient groups were followed for 30 days, and no acute heart problems occurred in either group after leaving the hospital.
"In this study, we found that low-risk chest pain patients who participated in shared decision making often chose less extensive testing once it was clear that they weren't having a heart attack," says co-author Victor Montori, M.D., director of the research program within Mayo Clinic's Center for the Science of Health Care Delivery.
Researchers surveyed both groups of patients immediately after the ER visit to test their knowledge and analyze their involvement in decision making. Findings include:
- Decision-aid patients decided to be admitted to the observation unit for stress testing 58 percent of the time, compared to 77 percent for patients in the traditional care group.
- Patients in the decision-aid group were significantly more knowledgeable about their heart attack risk and options than those in the traditional care group.
- The degree of involvement in care decisions in patients who received the decision aid was four times greater than those who didn't receive the decision aid.
- Patients in the decision-aid group said the information was clear and helpful, and 3 of 4 surveyed said they would recommend it to others.
"Using a decision aid to discuss evaluation options appears to improve patients' understanding of their condition and to reinforce the decisions they've made," Dr. Hess says. "In addition, patients who used the decision aid chose less expensive evaluation options and reported greater satisfaction with the decision-making process."
Other study co-authors are Meghan Knoedler; Nilay Shah, Ph.D.; Jeffrey Kline, M.D.; Maggie Breslin.; Megan E. Branda.; Laurie Pencille; Brent Asplin, M.D.; David Nestler, M.D.; Annie Sadosty, M.D.; Ian Stiell, M.D. and Henry Ting, M.D.
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