Most of them are ineligible because they come to the hospital after the three-hour time window." "But in the United States, only about 3 percent of stroke patients end up getting treated. "We've known that this treatment works for ischemic stroke since 1995," said Lansberg, the lead author of the study.
For these strokes, a medication called tissue plasminogen activator, or tPA, can open blocked blood vessels and help restore blood flow to the brain. Most strokes are ischemic, meaning they're caused by a blocked artery. Their findings were published online May 21 in the journal Stroke.Įvery year, more than 750,000 Americans experience a stroke, or brain attack, due to a sudden drop in blood flow to the brain. By combining data from multiple clinical trials, Maarten Lansberg, MD, PhD, assistant professor of neurology and neurological sciences at Stanford, and colleagues from Belgium and Germany showed that treatment can benefit patients up to 4.5 hours after they experience their first symptom. But if more than three hours have passed, current clinical guidelines say the medication should not be used.īut the new study suggests that the traditional three-hour time window is too short. If a patient arrives at the emergency room within three hours of experiencing stroke symptoms, doctors can administer a potent clot-busting medication and often save critical brain tissue.
Anti stroke meds name cracked#
Now, research from the School of Medicine has cracked that window open a bit wider. Once symptoms start, there's only a tiny window of time for stroke victims to get life-saving treatment.
Maarten Lansberg and his colleagues say that the time limit on use of the stroke drug tPA should be increased to 4.5 hours from the current recommendation of three hours.
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