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On the night of April 23, 2017, Cindi, a 46-year old graphic designer who lives in Salinas,ÌýCalifornia, went to bed around 10:30pm,Ìýanticipating a 5:00am wake-up from herÌýhusband, as she was scheduled for outpatientÌýsurgery at Stanford. She did arrive at Stanford the next morning—not as an outpatient, but as the victim of a massive ischemic stroke.

“My husband woke me up at 5 o’clock as planned, and when I started to speak to him, I couldn’t talk. I knew what I was trying to say in my mind, but it had nothing to do with the sounds that were coming out of my mouth,� Cindi said.

Her left side was also paralyzed. Her husband called 911. An ambulance rushed Cindi to Salinas ValleyÌýMemorial Hospital. But because she’dÌýhad the stroke while asleep, the “clockâ€�Ìý determining whether she could be administered a clot-busting medication or undergo a clot-removing surgery had already started ticking. For stroke patients, the clock starts at the last time they are seen well, and for Cindi, that was 10:30 the previous night. It was already too late for eitherÌýof these treatments, the attending physicians explained.

But an emergency room doctor told her husband about an ongoing study at Stanford, and coordinated herÌýtransfer. Within 30 to 45 minutes, a helicopter operated by Stanford HealthÌýCare was on the scene to whisk Cindi to Stanford Hospital. By the time Cindi’s husband and son arrived, sheÌýwas already out of surgery. Seven days later she was discharged.

Brain-Imaging Clinical Trial

Cindi was treated at Stanford as part of a 38-center clinical trial sponsored by the National Institutes of Health, and led by À¶Ý®ÊÓƵers at the Stanford University School of Medicine. Brain-imaging software developed at Stanford identified that she could benefit from a surgical procedure called a thrombectomy to remove the clot in her brain, despite the number of hours that had elapsed since she suffered the stroke. The Stanford stroke study has shown that far more people than previously thought can benefit from an emergency procedure for acute ischemic stroke.

“Nearly half of all patients treated between six and 16 hours after the onset of their symptoms were largely spared from the consequences of their stroke,â€� said the trial’s principalÌý investigator, Gregory Albers, MD, theÌýCoyote Foundation Endowed Professor of Neurology and Neurological ScienceÌýand the director of the Stanford Stroke Center. The number of stroke patients who died or were confined to nursing homes was nearly cut in half, the biggest improvement seen in any stroke-relatedÌýtrial to date.

Key to the study’s findings is a growing understanding that strokes spreadÌýthrough individual brain tissue at different rates, Albers said. It is notÌýso much the amount of time elapsedÌýsince a stroke began as the amount of remaining at-risk, but salvageable brain tissue that determines who will benefit from stroke therapy, he said.

At a follow-up appointment at StanfordÌýHealth Care, Cindi’s doctors showed herÌý‘before and after’ images of her brain.Ìý“Before the thrombectomy, it looked like half of my brain was gone. There was no blood supply whatsoever,â€� she said. “After, it looked like a tree of life. My brain lit up with veins and arteries.ÌýI wouldn’t have survived without the treatment.â€�

Ischemic strokes account for about 85 percent of the roughly 750,000 strokes suffered annually in the United States. They occur when blood supply to part of the brain is cut off by a clot in a bloodÌývessel in the brain. The resulting lack of oxygen and glucose quickly kills brain tissue in the immediate vicinity, and the affected area continues to expand until blood supply is restored.

Recovery through Rehabilitation

While Cindi immediately regained someÌýuse of her arms, hands and feet after her thrombectomy, her recovery did not happen overnight. After a week in theÌýhospital, Cindi was moved to an inpatientÌýrehab facility in Santa Clara. She arrived in a wheelchair, unable to do anythingÌýfor herself. “It was a huge frustration,â€� said Cindi, who was determined to walkÌýagain. Four weeks later, she was able to go home. This time, on her own two feet. But her work was not done. She continued daily occupational, physical and speech therapy.Ìý

“I have been working on my recovery every day since I had my stroke,â€�said Cindi. After more than a yearÌýof intensive rehabilitation, she hasÌýreturned to work part time, and isÌýtalking, walking and driving as before. Her weekends are spent hiking in Big Sur with her husband, and she has started to swim and ride a bicycle again.

“By the grace of God I was chosen for the Stanford study,â€� said Cindi. “I am literally standing on this Earth as a wifeÌýand a mother because of that procedure. It saved my life.â€�