Two parameters derived from transcranial doppler ultrasonography for non-invasive assessment of intracranial pressure in patients post decompressive craniectomy: a retrospective study
ZHENG Longlong
YANG Yanlong
YANG Yang
CHANG Tao
LI Yuqian
LI Lihong
Abstract：Objective The relative accuracy of two assessment parameters for intracranial pressure by tramcranial doppler ultrasonography (TCD) based on pulsatility index (nICP_PI) and diastolic flow velocity (nICP_FVd) were compared and analyzed.Methods A total of 55 records of TCD and other clinical data from 44 patients post decompressive craniectomy were collected and analyzed by retrospectively analysis.Results Considering every TCD recording as an independent event,nICP_FVd was generally showed to be the best estimator of measured intracranial pressure (ICP):r =0.61,P＜0.05;Bias =-2.2 mmHg,95％ confidence interval (CI) =(-23.1mmHg,18.7 mmHg);area under the curve (AUC) =0.73,P ＜0.05,whereas nICP_PI did not show any relationship with measured ICP using any of the above statistical indicators:r =O.1,P ＞ 0.05;Bias =2.1mmHg,95％ CI =(-16.0 mmHg,20.1 mmHg);AUC =0.53,P ＞ 0.05.Conclusion The parameter based on diastolic flow velocity (nICP_FVd) has been demonstrated to be the better estimator for measured ICP in patients post decompressive craniectomy in comparison to the parameter based on pulsatility index (nICP_PI),having more reliable reference value in clinical practices.
Keywords：Intracranial pressureTranscranial doppler ultrasonographyDecompressive craniectomy
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 249-253 )