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Updated: Nov 20, 2025

Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition
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[Correlation between optic nerve sheath diameter and extracorporeal life support time].

Jorge Rivas-Rangel1, Maricela García-Arellano1, Juan M Marquez-Romero2

  • 1Unidad de Cuidados Intensivos, Departamento de Pediatría, Centenario Hospital «Miguel Hidalgo», Aguascalientes, México.

Anales De Pediatria
|January 25, 2021
PubMed
Summary

Extracorporeal life support (ECLS) duration correlates with optic nerve sheath diameter (ONSD) changes in pediatric cardiac surgery patients. ONSD variations occurred even without increased intracranial pressure symptoms.

Keywords:
Cardiopatías congénitasCongenital heart defectsDiagnostic ultrasoundExtracorporeal life supportNervio ópticoOptic nervePaediatric intensive care unitSoporte vital extracorpóreoUltrasonido diagnósticoUnidades de cuidados intensivos pediátricos

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Area of Science:

  • Pediatric cardiac surgery
  • Neuro-ophthalmology
  • Critical care medicine

Context:

  • Pediatric cardiac surgery often requires extracorporeal life support (ECLS).
  • Monitoring for increased intracranial pressure (ICP) is crucial in these patients.
  • Optic nerve sheath diameter (ONSD) is a potential non-invasive biomarker for ICP.

Purpose:

  • To investigate the correlation between ECLS and aortic cross-clamp times and ONSD in pediatric patients undergoing cardiac surgery.
  • To assess ONSD changes at various time points post-surgery.
  • To determine if ONSD variations occur independently of clinical signs of increased ICP.

Summary:

  • This study analyzed 23 pediatric patients (0-15 years) undergoing cardiac surgery with ECLS.
  • Optic nerve sheath diameter (ONSD) measurements were taken pre-operatively and at 6 and 24 hours post-surgery.
  • A positive correlation was found between ECLS duration and ONSD values at 6 hours post-surgery (r=0.476, p<0.05), with ONSD returning to baseline by 24 hours. No patients showed signs of increased ICP.

Impact:

  • Findings suggest ECLS duration is associated with transient ONSD changes in pediatric cardiac surgery patients.
  • Highlights the potential for ONSD to reflect physiological changes beyond elevated ICP.
  • Further research is needed to elucidate the factors contributing to these ONSD variations.