ArticleArquivos de neuro-psiquiatria2022
Evaluation of cerebral hemodynamics by transcranial Doppler ultrasonography and its correlation with intracranial pressure in an animal model of intracranial hypertension.
Article in Arquivos de neuro-psiquiatria, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 8 citations in OpenAlex.
- Ultrasound measurement of the optic nerve and its sheath using the CLOSED protocol: comparison with MRI in a porcine in-vivo model.BMC veterinary research · 2026Article
- The non-invasive transcranial Doppler for hemodynamic monitoring.Physiological research · 2025Article
- Posterior communicating artery vasospasm impairs cerebral pulsatility in an experimental subarachnoid hemorrhage model.Frontiers in neurology · 2025Article
- Animal models for the study of intracranial hematomas (Review).Experimental and therapeutic medicine · 2023Review
- Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens.Acta cirurgica brasileira · 2022Article
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTranscranial Doppler has been tested in the evaluation of cerebral hemodynamics as a non-invasive assessment of intracranial pressure (ICP), but there is controversy in the literature about its actual benefit and usefulness in this situation.
objectiveTo investigate cerebral blood flow assessed by Doppler technique and correlate with the variations of the ICP in the acute phase of intracranial hypertension in an animal model.
methodsAn experimental animal model of intracranial hypertension was used. The experiment consisted of two groups of animals in which intracranial balloons were implanted and inflated with 4 mL (A) and 7 mL (B) for controlled simulation of different volumes of hematoma. The values of ICP and Doppler parameters (systolic [FVs], diastolic [FVd], and mean [FVm] cerebral blood flow velocities and pulsatility index [PI]) were collected during the entire procedure (before and during hematoma simulations and venous hypertonic saline infusion intervention). Comparisons between Doppler parameters and ICP monitoring were performed.
resultsTwenty pigs were studied, 10 in group A and 10 in group B. A significant correlation between PI and ICP was obtained, especially shortly after abrupt elevation of ICP. There was no correlation between ICP and FVs, FVd or FVm separately. There was also no significant change in ICP after intravenous infusion of hypertonic saline solution.
conclusionsThese results demonstrate the potential of PI as a parameter for the evaluation of patients with suspected ICP elevation.
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