transcranial doppler ultrasound interpretation

No predictive value was gained from analyzing the outcome in relation to absolute velocities or their decrease.Ĭonclusions Serial TCD studies allow monitoring of venous hemodynamics and collateral pathways in patients with CVT. No correlations were noted for onset of disease, initial motor deficits, and presence of bleeding. A nonsignificant relationship was observed with affliction of the superior sagittal sinus. High venous velocities were significantly associated with altered consciousness ( P=.001). Three patients (17%) showed no changes in velocities as defined by a limit of velocity variation of 30% during the course of CVT. A plateau phase, defined as no further decrease in velocities, was reached in these patients within 4 to 314 days (mean±SD, 59.9☗3.7 days). The percentage of velocity decrease ranged from 34% to 73% (mean±SD, 56.4%☑0.9%). Fifteen patients (83%) showed a decrease of velocities-2 of them after a transient increase during cessation of heparin therapy. The highest measured velocities in the monitored intracranial venous vessels ranged from 20 to 150 cm/s (mean±SD, 58.9☓8.8 cm/s), and the lowest were from 9 to 84 cm/s (mean±SD, 27.9☑7.0 cm/s). Results Venous blood flow velocities were successfully measured in all patients. Venous TCD was performed with a 2-MHz range-gated transducer. Subjects and Methods Serial TCD examinations were performed in 18 consecutive patients with CVT (14 females, 4 males) aged 16 to 64 years (mean±SD, 36.8☑3.1 years) during a mean follow-up ranging from 34 to 783 days (mean±SD, 201☑85 days) between 19. Setting Inpatient neurologic service in a university hospital. Objectives To test the assumption that transcranial Doppler ultrasound (TCD) is able to detect and to monitor intracranial venous blood flow velocities in patients with confirmed cerebral venous thrombosis (CVT).ĭesign Prospective case study in 18 patients. Shared Decision Making and Communication.Scientific Discovery and the Future of Medicine.Health Care Economics, Insurance, Payment.Clinical Implications of Basic Neuroscience.Challenges in Clinical Electrocardiography.

Transcranial doppler ultrasound interpretation