Predictive value of transcranial Doppler for intracranial pressure and cerebral perfusion pressure in patients with intracranial infection / 临床神经病学杂志

ABSTRACT

Objective To explore predictive value of spectra parameter changing of transcranial Doppler (TCD) for intracranial pressure (ICP) and cerebral perfusion pressure (CPP) in patients with intracranial infection. Methods TCD examination was taken before 128 times of lumbar puncture for pressure testing in 42 patients with intracranial infection. Meanwhile, Data of TCD and cerebrospinal fluid (CSF) pressure were recorded for later analysis and compared with control group.Results With ICP increase progressively , the TCD of above patients showed high resistance spectra, waveform sharpened, peak systolic velocity (Vs) without significant change while in end diastolic velocity (Vd) decreased and pulsatility index (PI) increased.Compared with control group, their blood flow velocity significantly increased.According to the TCD parameter and stepwise regression equations, predicted ICP and CPP ( ICPe and CPPe) were positive correlated with actual ICP and CPP (r=0.594,0.910, allP