Researchers link blood flow regulation in the brain and prognosis following cardiac arrest

A group of researchers at Osaka University have used a noninvasive method to evaluate cerebrovascular autoregulation (CVAR) in patients following out-of-hospital cardiac arrest. The mortality rate increased significantly with the duration of time that CVAR was undetectable. The article, “Association between time-dependent changes in cerebrovascular autoregulation after cardiac arrest and outcomes: a prospective cohort study,” was published in Journal of Cerebral Blood Flow and Metabolism.

Research shows older frail patients have a 1 in 3 chance of surviving CPR during surgery

It’s estimated that around 25% of patients who have a cardiac arrest and receive cardiopulmonary resuscitation (CPR) in a normal hospital setting will survive. Those odds shoot up to 50% for patients who receive CPR during or in the immediate period following surgery, where they are closely monitored by specialists who know their medical history and can intervene without delay. But it’s unclear whether that trend applies to frail patients, who are often older and at a higher risk of experiencing CPR-related trauma and complications.