Acute Neurologic Injury in ICU: Vasomotor Reactivity Testing by Transcranial Doppler (TCD/TCCS)

2021 ◽  
pp. 333-340
Author(s):  
Pedro Castro ◽  
Elsa Azevedo
Keyword(s):  
Transcranial Doppler ◽  
Neurologic Injury ◽  
Vasomotor Reactivity

Changes in Functional Vasomotor Reactivity in Migraine With Aura

Cephalalgia ◽  
2009 ◽  
Vol 29 (11) ◽  
pp. 1156-1164 ◽  
Author(s):  
ME Wolf ◽  
T Jäger ◽  
H Bäzner ◽  
M Hennerici
Keyword(s):  
Migraine With Aura ◽  
Flow Rate ◽  
Transcranial Doppler ◽  
Main Parameter ◽  
Migraine Without Aura ◽  
Curve Analysis ◽  
Monitoring Tool ◽  
Vasomotor Reactivity ◽  
Flow Response ◽  
History Of

Migraine with aura (MA) is associated with cerebral hyper- and hypoperfusion during and after the attacks. Several attempts to estimate individual perfusion changes and asymmetries in patients with MA using transcranial Doppler (TCD) have not been consistent. In 70 patients with MA and 40 controls with migraine without aura (MoA) or without any history of migraine, interictally recorded TCD sequences were prospectively analysed. Formal curve analysis of the visually evoked flow response (VEFR) was performed semiautomatically. As a main parameter for functional vasomotor reactivity (fVMR), the visually evoked flow rate (VEFR%) was calculated. The VEFR% showed a significantly higher mean difference of 14.7 ± 12% in MA patients vs. 5.8 ± 4.4% ( P < 0.001) in controls. The significant asymmetry of fVMR in MA patients is suggested to reflect interattack persisting vasomotor changes which are of pathophysiological interest and may be used as a monitoring tool under prophylactic medication.

Increased Cerebral Vasomotor Reactivity in Migraine With Aura: An Autoregulation Disorder? A Transcranial Doppler and Near-Infrared Spectroscopy Study

Cephalalgia ◽  
2008 ◽  
Vol 28 (7) ◽  
pp. 689-695 ◽  
Author(s):  
F Vernieri ◽  
F Tibuzzi ◽  
P Pasqualetti ◽  
C Altamura ◽  
P Palazzo ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Migraine With Aura ◽  
Near Infrared Spectroscopy ◽  
Transcranial Doppler ◽  
Near Infrared ◽  
Cerebral Blood Volume ◽  
Cerebral Arteries ◽  
Invasive Approach ◽  
Vasomotor Reactivity ◽  
Haemoglobin Content

Migraine with aura (MA) is associated with changes in cerebral blood flow (CBF), whereas the role of cerebral autoregulation is uncertain. This study aimed to evaluate basal CBF, cerebral blood volume (CBV) and vasomotor reactivity (VMR) in MA patients. Twenty-one controls and 16 MA patients (eight with side predominance) underwent simultaneous examination of flow velocity in the middle cerebral arteries by transcranial Doppler (TCD) and of near-infrared spectroscopy (NIRS) parameters [oxygen haemoglobin saturation: oxygen%, and total haemoglobin content (THC)] at rest and after hypercapnia. Cerebral VMR, THC and oxygen% increases were significantly greater on the predominant compared with the non-predominant migraine side, with both sides of patients without side predominance and with controls. These findings suggest altered autoregulation in MA patients, possibly secondary to impaired cerebrovascular autonomic control. Simultaneous TCD and NIRS investigation could represent a non-invasive approach to evaluate cerebral haemodynamics at the cortical and subcortical level.

Transcranial Doppler Identification of Neurologic Injury during Pediatric Extracorporeal Membrane Oxygenation Therapy

2017 ◽  
Vol 26 (10) ◽  
pp. 2336-2345 ◽  
Author(s):  
Jay F. Rilinger ◽  
Craig M. Smith ◽  
Raye Ann O. deRegnier ◽  
Joshua L. Goldstein ◽  
Michele G. Mills ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
Transcranial Doppler ◽  
Neurologic Injury ◽  
Membrane Oxygenation
Sign in / Sign up

Export Citation Format

Share Document