A stroke happens when blood flow to part of the brain is blocked. Without oxygen and nutrients, brain cells begin to die within minutes. An ischemic stroke, the most common type, is caused by a blood clot blocking an artery in the brain.
Doctors often treat severe cases with a procedure called mechanical thrombectomy. During this treatment, specialists guide tiny instruments through blood vessels to remove the clot and reopen the blocked artery.
Mechanical thrombectomy has changed stroke care over the past decade because it can quickly restore blood flow. However, doctors have noticed that reopening the artery does not always mean the patient will recover well. Around half of patients continue to have major disabilities even after the procedure appears technically successful.
Researchers have been trying to understand why this happens. Scientists believe that even after the main artery is reopened, the smallest blood vessels inside the brain may still not deliver enough blood to damaged tissue.
In some cases, blood returning too quickly may even injure fragile brain tissue or increase the risk of bleeding. Because blood pressure strongly affects blood flow, doctors have long wondered what blood pressure is safest after thrombectomy.
Until now, hospitals have usually followed similar blood pressure targets for nearly every patient. A new clinical trial suggests that this one-size-fits-all approach may not be the best choice.
The HOPE clinical trial, led by the Sant Pau Research Institute (IR Sant Pau) in Spain, tested whether blood pressure should be adjusted according to how much blood flow had actually been restored after thrombectomy.
The study involved 440 patients treated in 11 Spanish hospitals. Participants were randomly assigned to receive either standard blood pressure management or a personalized treatment plan.
Patients whose blocked artery had been almost completely reopened were given lower blood pressure targets to reduce the chance of further brain injury.
Patients whose blood flow had not been fully restored were allowed to keep slightly higher blood pressure so that enough blood could continue reaching brain tissue that was still at risk. Doctors closely monitored patients for the first 72 hours after treatment and adjusted medicines when needed.
The results were encouraging. Ninety days after their stroke, 60 percent of patients receiving personalized blood pressure treatment were able to live independently, compared with 47.1 percent of those receiving standard care. The personalized approach also reduced bleeding inside the brain without increasing deaths or other serious complications.
The findings were presented at the European Stroke Organisation Conference and published in JAMA Neurology. Lead investigator Dr. Pol Camps-Renom said the results suggest that patients should not all receive the same blood pressure treatment after thrombectomy because each brain responds differently after a stroke.
The study also highlights that stroke treatment does not end once a clot is removed. Care during the following hours and days may be just as important for protecting brain tissue and improving recovery.
The research does have limitations. The trial stopped before reaching its planned number of participants, so additional studies will be needed to confirm the results in larger groups and different countries before treatment guidelines change worldwide.
Overall, the findings provide strong evidence that individualized blood pressure management may become an important part of future stroke care. Rather than using identical targets for everyone, doctors may be able to improve recovery by matching treatment to each patient’s condition.
Study review and analysis: This was a randomized clinical trial, making it one of the strongest types of medical research. The improvement in functional recovery was meaningful and the safety results were reassuring.
However, because the trial ended early, confirmation from larger studies is still needed. If future research reaches similar conclusions, this personalized strategy could significantly improve recovery after stroke and change routine hospital care.
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Source: Sant Pau Research Institute (IR Sant Pau).
