Valdueza J M, Harms L, Doepp F, Koscielny J, Einhäupl K M
Department of Neurology, University Hospital Charité, Humboldt University, Berlin, Germany.
Stroke. 1997 Aug;28(8):1607-9. doi: 10.1161/01.str.28.8.1607.
We sought to assess the usefulness of the Doppler technique in the monitoring of microembolic signals in the main venous outflow pathways in superior sagittal sinus thrombosis.
Transcranial Doppler ultrasound was performed with a range-gated 2-MHz transducer in 6 patients with superior sagittal sinus thrombosis, in 5 subjects with platelet hyperaggregability, and in 20 healthy volunteers. Emboli monitoring was performed mainly in one distal internal jugular vein for 10 to 15 minutes.
Three of the six patients (50%) with superior sagittal sinus thrombosis had microemboli. None of the patients with platelet hyperaggregation or healthy volunteers revealed microemboli.
Microemboli can be found in superior sagittal sinus thrombosis by Doppler ultrasound. Their prognostic significance remains to be determined.
