Study on the cerebral blood flow velocity in patients with cerebral hemorrhage

Objective The blood flow velocity changes of main intracranial arteries, and the clinical estimation of the intracranial hemodynamic changes after cerebral hemorrhage were studied. Methods The blood flow rate of main intracranial arteries including middle cerebral artery, anterior and posterior cerebral artery, basilar and vertebral artery of 216 patients with cerebral hemorrhage and 80 healthy controls were ex-aminated by transcranial Doppler (TCD) ultrasound technique. The data of peak systolic velocity (Vs), end di-astolic velocity (Vd) and pulsation index (PI) were recorded. Results The Vs and Vd in patients with cerebral hemorrhage were less than that in controls with significant difference (P0.01). The decrease of intracranial arterial blood flow velocity was found in 164 patients (75.93%) with cerebral hemorrhage. Among them the decrease were mainly in Vd and occurred at the early stage of hemorrhage in 51 cases (23.61%), the general decrease were found in intermediate and late period of hemorrhage in 113 cases (52.31%). Conclusion It is demonstrated that the most cerebral hemorrhage patients were in the state of low cerebral circulation, its degree is positively correlated with the intensity of the disease. Thus it is helpful for guiding the therapeutic approach and predicting the prognosis.