Anticoagulants for acute ischaemic stroke.

Area of Science:

• Neurology
• Cardiovascular Medicine
• Pharmacology

Background:

• Ischemic stroke is primarily caused by cerebral artery blockages from blood clots.
• Anticoagulant therapy may improve outcomes in stroke patients if bleeding risks are manageable.

Purpose of the Study:

• To evaluate the effectiveness and safety of initiating anticoagulation within 14 days of acute ischemic stroke onset.

Main Methods:

• Systematic review and meta-analysis of 24 randomized controlled trials involving 23,748 participants.
• Included trials compared early anticoagulant therapy with control in acute ischemic stroke patients.

Main Results:

• Early anticoagulation did not reduce all-cause mortality or death/dependency.
• It decreased recurrent ischemic strokes and pulmonary embolisms but increased symptomatic intracranial and extracranial hemorrhages.

Conclusions:

• Early anticoagulant therapy shows no net short- or long-term benefit for acute ischemic stroke.
• The increased bleeding risks outweigh the benefits of reduced recurrent events, precluding routine use.