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Summary
Ultrasonografía del diámetro de la vaina del nervio óptico a gran altitud (3.650-4.150 m) en nativos sanos
Adrián Ávila-Hilari1,3, Manuel Luis Avellanas-Chavala2,3
Affiliation of the authors
1Unidad de Terapia Intensiva, Hospital Municipal Boliviano Holandés, El Alto, Bolivia. 2Presidente del Comité de Expertos del Máster en Medicina de Urgencia y Rescate en Montaña. Facultad de Ciencias de la Salud y del Deporte. Universidad de Zaragoza, Huesca, Spain. 3Comité de Expertos de Medicina Crítica en la Altitud de la Federación Panamericana e Ibérica de Medicina Crítica y Terapia Intensiva (FEPIMCTI), Ciudad de Panama. Panama.
DOI
Quote
Ávila-Hilari A, Avellanas-Chavala ML. Ultrasonografía del diámetro de la vaina del nervio óptico a gran altitud (3.650-4.150 m) en nativos sanos. Rev Esp Urg Emerg. 2025;4:30–3
Summary
BACKGROUND. Repeat ultrasound evaluation is used to measure optic nerve sheath diameter (ONSD) to detect intracranial hypertension noninvasively, especially at high altitudes and in the absence of hospitals with neurocritical monitoring resources.
OBJECTIVE. To measure ONSD in healthy lifelong inhabitants of high-altitude areas without neurocritical monitoring resources.
MATERIAL AND METHODS. Descriptive population ecology study of ONSD at high altitudes in areas without neurocriticalmonitoring resources. Ultrasound studies were performed in 2022 and 2023 at Clínica CIES at 3650 m above mean sea level in La Paz and at Hospital Municipal Boliviano Holandés (HMBH) at 4150 m above mean sea level in the city of El Alto. All volunteers met the inclusion criteria. ONSD was measured in each eye 3 times in all volunteers in order to minimize intraobserver variability.
RESULTS. We studied 373 volunteers, 201 at the Clínica CIES and 172 at the HMBH. The mean ONSD observed was 4 mm at the Clínica CIES and 4.29 mm at the HMBH.
CONCLUSIONS. Repeat ultrasound measurement of ONSD is a promising, potentially useful noninvasive way to detect intracranial
hypertension in hospitals at high altitudes that lack neurocritical monitoring resources.
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