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Table 1 Physiologic and pathologic conditions that can modify TCCS flow velocities [3]

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

 Fever, anemia, high cardiac output, arterial hypertension
 Intracranial arterial stenosis (for example atherosclerotic plaque)
 Bacterial meningitis
 Raised intracranial pressure
 Decreased cerebral perfusion pressure
 Cerebral circulatory arrest
 Wrong insonation angle