There isn't a hard and fast rule for how long doctors should perform CPR, but new research from the University of Michigan Health System shows longer attempts might be beneficial for some patients.
Most cardiac arrest patients are often successfully resuscitated after a short period of time about 12 minutes on average. Practitioners are often reluctant to perform longer attempts those that can last 30 minutes or longer because if patients do not survive early on during cardiac arrest, their overall prognosis is poor.
The research from U-M, however, shows that for some patients, successful resuscitation only occurred after 30 minutes or more.
On a broader level, the researchers found that patients at hospitals where attempts were longer, on average, had a higher likelihood of immediate survival and survival to discharge, even after accounting for differences in overall patient characteristics.
Importantly, patients who survived with longer arrest times did not appear to have substantially worse neurological function at discharge.
The study, led by cardiologist Zachary D. Goldberger, M.D., M.S., an assistant professor at the University of Washington, and recently a Robert Wood Johnson Foundation cardiology fellow at U-M , was published online today in The Lancet.
Each year, about 200,000 hospitalized patients will experience cardiac arrest, with only half of those surviving the initial arrest, and fewer than 20 percent surviving to discharge.
Goldberger says it's not surprising that there exists a wide variation among hospitals' average length of resuscitation attempts, given there's no firm evidence to guide practitioners when to stop their efforts once resuscitative efforts have started.
"Our findings suggest an opportunity for improving care in this high-risk population. Overall, it may involve standardizing the time required for continuing resuscitation attempts prior to decisio
|Contact: Justin Harris|
University of Michigan Health System