Reduced jet velocity in venous flow after CSF drainage – assessing hemodynamic causes of pulsatile tinnitus

摘要

Background and PurposeIdiopathic intracranial hypertension (IIH) is commonly associated with transverse sinus stenosis - a venous cause of pulsatile tinnitus (PT). In IIH patients, CSF drainage via lumbar puncture (LP) decreases intracranial pressure, which relieves the stenosis, and may provide at least temporary cessation of PT. The objective of this study is to evaluate changes in venous blood flow caused by lowered intracranial pressure in PT patients to help identify the cause of PT.