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Table 2 Physiologic and pathologic conditions that can modify TCCS Doppler indices [3]

From: Transcranial Doppler ultrasound in the ICU: it is not all sunshine and rainbows


 Raised intracranial pressure

 Decreased cerebral perfusion pressure



 Cerebral circulatory arrest


 Intracranial artery occlusion

 Advanced age (vessel stiffness)



 Anemia, fever, high cardiac output, arterial hypertension



 Intracranial artery stenosis

 Arteriovenous malformation

 Rewarming following hypothermia