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01.12.2017 | Review | Ausgabe 1/2017 Open Access

The Ultrasound Journal 1/2017

Point-of-care transcranial Doppler by intensivists

Zeitschrift:
The Ultrasound Journal > Ausgabe 1/2017
Autoren:
Vincent Issac Lau, Robert Thomas Arntfield
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Electronic supplementary material

The online version of this article (doi:10.​1186/​s13089-017-0077-9) contains supplementary material, which is available to authorized users.

Abstract

In the unconscious patient, there is a diagnostic void between the neurologic physical exam, and more invasive, costly and potentially harmful investigations. Transcranial color-coded sonography and two-dimensional transcranial Doppler imaging of the brain have the potential to be a middle ground to bridge this gap for certain diagnoses. With the increasing availability of point-of-care ultrasound devices, coupled with the need for rapid diagnosis of deteriorating neurologic patients, intensivists may be trained to perform point-of-care transcranial Doppler at the bedside. The feasibility and value of this technique in the intensive care unit to help rule-in specific intra-cranial pathologies will form the focus of this article. The proposed scope for point-of-care transcranial Doppler for the intensivist will be put forth and illustrated using four representative cases: presence of midline shift, vasospasm, raised intra-cranial pressure, and progression of cerebral circulatory arrest. We will review the technical details, including methods of image acquisition and interpretation. Common pitfalls and limitations of point-of-care transcranial Doppler will also be reviewed, as they must be understood for accurate diagnoses during interpretation, as well as the drawbacks and inadequacies of the modality in general.
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