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Hemorrhagic transformation

Hemorrhagic transformation (HT) or hemorrhagic conversion is a medical complication that can occur in the brain following an acute ischemic stroke, a condition in which blood flow to the brain is blocked.

Signs and symptoms
Signs and symptoms can vary depending on the severity and location of the bleeding within the brain tissue. In the medical literature, various criteria have been used to establish whether a hemorrhagic infarction is symptomatic or not. Studies have shown that only parenchymal hematomas are strongly associated with long-term deterioration and worsening of the patient's condition. Most cases of hemorrhagic transformation, including the majority of petechial hemorrhages, are asymptomatic and do not cause noticeable symptoms. • Headache • Changes in consciousness • Weakness or numbness • SeizuresSpeech difficulties • Vision problems == Pathophysiology ==
Pathophysiology
HT involves the extravasation of blood from the peripheral circulation across a disrupted blood-brain barrier (BBB) and into the brain tissue. == Epidemiology ==
Epidemiology
Around 10-15% of patients with acute ischemic stroke experience hemorrhagic transformation. == References ==
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