Early Cerebral Hypoperfusion in Patients with Orthostatic Intolerance Without Tachycardia During Head-Up Tilt Test is Independent of Vasovagal Response

• Main Authors: J. Antonio González-Hermosillo (Author), Alan Rubio-Vega (Author), Karla A. F. González-Olvera (Author), Manuel Sierra-Beltrán (Author), Andrei Kostine (Author), Claudia Lerma (Author)
• Format: Book
• Published: Permanyer, 2021-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Background: Cerebral hypoperfusion before syncope has been shown in patients with chronic orthostatic intolerance (OI) without tachycardia, but it is unknown if an initial decrease of cerebral blood flow velocity (CBFv) could be related to the vasovagal response (VVR) to head-up tilt test (HUTT). Ob...