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Issue: Issue 1 (2014) – Supplement 1


Original Article

Collateral cerebral venous outflow by scalp veins in patients with parasagittal meningiomas

Author(s):
Vladimir Semenyutin, Dmitry Pechiborsch, Vugar Aliev, Andreas Patzak, Grigory Panuntsev, and Alexandr Kozlov
Abstract:
Background: Invasion of the superior sagittal sinus (SSS) by parasagittal meningiomas (PSM) causes formation of collateral pathways of venous outflow (including scalp veins) from the cranial cavity. However their importance, considering this function, is still under question. The purpose of this study was to determine the importance of scalp veins in collateral cerebral venous outflow in patients with PSM.

Methods: Eight patients with PSM (52-73 year-old) with invasion of the SSS and 4 healthy volunteers were examined, in supine position, with bilateral transcranial Doppler monitoring (MultiDop X, DWL) of blood flow velocity (BFV) in both middle cerebral arteries (MCA), and with blood pressure (BP) monitoring using photoplethysmography (Ohmeda, Finapres 2300). In patients circular compression of scalp veins with pneumatic cuff around glabella and inion during 3 minutes was performed, while in volunteers a simultaneous transient complete compression of both internal jugular veins controlled by ultrasound in B-mode (Vivid E, GE) was performed.

Results: Significant changes of BFV, pulsatility index (PI) and BP were not detected during the whole period of compression of scalp veins. These data indicate a low importance of scalp veins in collateral venous outflow from the cranial cavity. Simultaneous compression of both internal jugular veins in all 4 volunteers caused BFV decrease by 9±4% (p<0.05) and PI increase by 18±12% (p<0.05) associated presumably with intracranial hypertension and impairment of venous outflow from the cranial cavity.

Conclusion: Temporary circular compression of scalp veins in patients with invasion of the SSS does not cause impairment of venous outflow from the cranial cavity, which presumably indicates their low importance.

Keywords: Scalp veins, Cerebral venous outflow, Parasagittal meningiomas, Collateral venous pathways.

International Journal of Clinical Neurosciences and Mental Health 2014; 1(Suppl. 1):S24

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