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Beneficial impact of early cranioplasty in patients with decompressive craniectomy: evidence from transcranial Doppler ultrasonography

  • Clinical Article - Brain Injury
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Abstract

Background

A cranioplasty (CP) is often performed after decompressive craniectomy (DC) for cosmetic and protective reasons; however, the timing of CP needs to be better evaluated to maximize beneficial outcomes and neurological recovery.

Objective

We investigated the effects and mechanisms of early CP compared to late CP on neurological recovery, from the perspective of cerebral blood flow (CBF).

Methods

This study retrospectively reviewed 43 patients undergoing early (<12 weeks) or late (≥12 weeks) cranioplasty after DC. The CBF velocity was measured by transcranial Doppler ultrasonography and was analyzed prior to and after CP in every patient. Complications were recorded.

Results

The CBF velocity in the middle cerebral artery (MCA) ipsilateral to the CP was increased in both groups and was statistically different between groups (p < 0.05). On the contralateral side, however, the CBF in the MCA was increased in the early CP group, but not the late CP group. Change (expressed as delta, Δ) was defined as the difference in CBF velocity between pre- and postoperative status in the early and late CP groups. A statistically significant difference was detected in the Δ of MCA on the ipsilateral side between the early and late groups. There were no differences in the incidence of complications between groups.

Conclusions

Our results show better post-DC improvements in the CBF of patients receiving CP < 12 weeks after DC, compared to those receiving CP ≥ 12 weeks after DC. Therefore, early CP has potential benefits for cerebral perfusion.

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Abbreviations

CP:

Cranioplasty

DC:

Decompressive craniectomy

CBF:

Cerebral blood flow

MCA:

Middle cerebral artery

ICH:

Intractable intracranial hypertension

CSF:

Cerebrospinal fluid

VP:

Ventriculoperitoneal shunt

CT:

Computed tomography

TCD:

Transcranial Doppler ultrasonography

ICA:

Intracranial carotid artery

MR:

Magnetic resonance

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Correspondence to Guo Zheng Xu.

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Song, J., Liu, M., Mo, X. et al. Beneficial impact of early cranioplasty in patients with decompressive craniectomy: evidence from transcranial Doppler ultrasonography. Acta Neurochir 156, 193–198 (2014). https://doi.org/10.1007/s00701-013-1908-5

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  • DOI: https://doi.org/10.1007/s00701-013-1908-5

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