Articles Vol. 66 No. CĐ16-HNKH Bệnh viện Nhi Đồng 2 02/10/2025

13. CHARACTERISTICS OF THE OPTIC NERVE SHEATH DIAMETER MEASURED BY ULTRASOUND IN CHILDREN WITH SUSPECTED INCREASED INTRACRANIAL PRESSURE

Truong Minh Tan Dat1, Nguyen Hoang Nhat Minh2, Nguyen Quang Huy1, Ho Van Tien Dat1, Nguyen Dang Khanh1
1 Bệnh viện Nhi Đồng 2
2 Trường Đại học Nguyễn Tất Thành
Corresponding author: tdmdnt@gmail.com
DOI: 10.52163/yhc.v66iCD16.3325
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Keywords
ultrasound-based ONSD, increased ICP in children.
Abstract

 

Objectives: To determine the characteristics of optic nerve sheath diameter (ONSD) measured by ultrasound in children with suspected increased intracranial pressure (ICP).

Materials and methods: A descriptive cross-sectional study at the pediatric intensive care unit (PICU), Children's Hospital 2 between February and August 2024 on 142 children, including 2 groups: suspected increased ICP (n=69) and without increased ICP (n=73).

Results: The ONSD values ​​measured on PICU admission (right eye, left eye and the average of both eyes) between the two groups had a significant difference with P < 0.05. Applying the ROC curve to analyze the average ONSD value in four age groups (<1, 1-5, 5-10 and >10) recorded AUROC > 0.9, showing good accuracy of ONSD in assessing raised ICP. The suggested cut-off values ​​for diagnosing increased ICP in the four age groups were: 4.2 mm; 4.8 mm; 5.0 mm and 5.3 mm, respectively. There was a negative correlation between the average ONSD value of both eyes and GCS  at the time of ICU admission, ICU discharge and during the first 3 days with the treatment of cerebral edema. The final and highest mean ONSD values ​​during follow-up were associated with mortality.

Conclusions: Ultrasound measurement of the optic nerve sheath diameter is a useful tool in the evaluation of increased intracranial pressure among PICU-admitted pediatric patients.

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