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Updated: Jul 11, 2025

Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition
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Reevaluating optic nerve sheath diameter in predicting postdural puncture headache: exploring clinical implications

Gabriela Osorio Cajes1, Frédérik Bélot-de Saint Leger1, Charlène Lefevre1

  • 1Intensive care unit, Begin Military Teaching Hospital, Saint-Mandé, 94160, France.

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Optic nerve sheath diameter ultrasound shows limited value in predicting postdural puncture headache (PDPH) after spinal anesthesia. Current methods lack definitive ONSD cutoffs, and effective PDPH prevention remains elusive.

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Area of Science:

  • Anesthesiology
  • Neurology
  • Medical Imaging

Background:

  • Postdural puncture headache (PDPH) is a common complication following spinal anesthesia.
  • Optic nerve sheath diameter (ONSD) ultrasound is explored as a non-invasive tool to predict PDPH.
  • A high incidence of PDPH (22.9%) was observed, potentially linked to traumatic needle use.

Discussion:

  • The study questions the clinical utility of ONSD ultrasound for early PDPH diagnosis due to the lack of effective prevention strategies.
  • While ONSD is related to intracranial pressure (ICP), a specific ONSD threshold for PDPH prediction is not established.
  • Most PDPH cases presented with mild pain and did not require an epidural blood patch.

Key Insights:

  • ONSD ultrasound's predictive capability for PDPH in spinal anesthesia requires further investigation.
  • The absence of a validated ONSD cutoff hinders its routine clinical application for PDPH prediction.
  • Research into related conditions suggests ONSD changes may correlate with treatment outcomes, warranting further study.

Outlook:

  • Future research should focus on establishing reliable ONSD parameters for PDPH prediction.
  • Investigating the efficacy and risks associated with epidural blood patch procedures is crucial.
  • Developing effective preventative measures for PDPH remains a significant clinical challenge.