Relationship of the optic nerve sheath diameter and repeated invasive intracranial pressure measures in traumatic brain injury patients; a diagnostic accuracy study

2021 ◽  
Author(s):  
Somayeh Mehrpour ◽  
Atabak Najafi ◽  
Arezoo Ahmadi ◽  
Tayebeh Zarei ◽  
Vasili Pleqi ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Optic Nerve ◽  
Intracranial Pressure ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Strong Positive Correlation ◽  
Nerve Sheath ◽  
Linear Probe ◽  
Accuracy Study

Objective: The purpose of this study was to quantitatively evaluate if the use of the optic nerve sheath diameter (ONSD) can be a suitable noninvasive surrogate approach for repeated invasive intracranial pressure (ICP) measures. Methods: The study used a sample of 22 adult patients with traumatic brain injury (TBI) from an in intensive care unit (ICU). ICP levels were measured using the gold standard and recorded in cmH20. ONSD was measured using ultrasonography with 5.6-5.7 MHz linear probe and recorded in millimeters. The data analysis was done using STATA software version 15. Results: The results showed a strong positive correlation between ICP and ONSD (r = 0.743, p = 0.001). The accuracy of the sonographic ONSD declined over time, starting from a high of 90.9% at the baseline and declining to a low of merely 20.0% after 48 hours. Conclusion: These findings indicate that the ONSD approach could be very useful alternative and noninvasive method for monitoring ICP.   

scholarly journals KORELASI DIAMETER SELUBUNG NERVUS OPTIK DAN MARSHALL CT SCORE DENGAN SKALA KOMA GLASGOW PADA CEDERA KEPALA

2020 ◽  
Vol 35 (3) ◽  
Author(s):  
Rani Maria Yogipranata ◽  
Hermina Sukmani
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Optic Nerve ◽  
Intracranial Pressure ◽  
Glasgow Coma Scale ◽  
Ct Scan ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Coma Scale ◽  
Nerve Sheath

CORRELATION BETWEEN OPTIC NERVE SHEATH DIAMETER AND MARSHALL CT SCORE WITH GLASGOW COMA SCALE IN TRAUMATIC BRAIN INJURYABSTRACTIntroduction: In traumatic brain injury (TBI), non-contrast brain CT scan is able to detect an increase in intracranial pressure, which is crucial in patient’s management. Optic nerve sheath diameter’s (ONSD) measurement is a new method that is expected to assess an increase in intracranial pressure noninvasively. Marshall CT score is a valid instrument, a de facto standard to classify head injury patient which correlates with an increased intracranial pressure.Aims: To see the correlation between ONSD and Marshall CT score with Glasgow Coma Scale (GCS).Methods: This was a retrospective, analytic observational with cross-sectional research’s design taken from the patients’ medical record admitted in Dr. Kariadi Hospital, Semarang, between March-August 2017. Measurement of ONSD and Marshall CT score were done by a radiologist. Rank Spearman’s were used to assess the correlation between variables.Results: There were 34 subjects, the majority were man (67,6%), with highest incidents in less than 30 years age (41,2%) and mostly caused by accident  (76,4%). Statistical analysis showed a moderate negative degree correlation between ONSD and Marshall CT score with GCS.Discussion: Enlargement of ONSD and higher Marshall CT score were correlated negatively related with the GCSin TBI patients with increased intracranial pressure.Keywords: Glasgow Coma Scale, Marshall CT score, optic nerve sheath diameter’s, traumatic brain injuryABSTRAK Pendahuluan: Pada cedera kepala atau traumatic brain injury (TBI), penggunaan CT scan kepala tanpa kontras dapat mendeteksi tanda-tanda peningkatan tekanan intrakranial (TIK), yang penting bagi tata laksana pasien. Sementara pengukuran diameter optic nerve sheath yang disebut optic nerve sheath diameter (ONSD) merupakan metode baru yang diharapkan dapat menilai peningkatan tekanan intrakranial secara non-invasif. Marshall CT score merupakan instrumen valid dan menjadi standar de facto dalam mengklasifikasikan pasien cedera kepala yang berkorelasi dengan peningkatan TIK.Tujuan: Untuk melihat adanya korelasi antara diameter N. Optikus dan Marshall CT score dengan Skala KomaGlasgow (Glasgow Coma Scale/GCS).Metode: Penelitian analitik observasional retrospektif secara potong lintang dari data rekam medis pasien cedera kepala dewasa yang dirawat di RSUP Prof. Dr. Kariadi, Semarang, pada bulan Maret-Agustus 2017. Selanjutnya kesemua subjek dilakukan pengukuran ONSD pada kedua mata serta penilaian Marshall CT score oleh seorang spesialis radiologi. Dilakukan uji korelasi Rank Spearman’s untuk menilai ketiga parameter tersebut.Hasil: Terdapat 34 subjek yang terutama laki-laki (67,6%) dengan usia terbanyak <30 tahun (41,2%) dan penyebab terbanyak adalah kecelakaan (76,4%). Didapatkan korelasi negatif derajat sedang antara ONSD dan Marshall CT score dengan GCS.Diskusi: Peningkatan diameter optic nerve sheath dan Marshall CT score berkorelasi dengan penurunan skor GCSpada pasien cedera kepala yang mengalami peningkatan TIK.Kata kunci: Cedera kepala, diameter optic nerve sheath, Marshall CT score, Skala Koma Glasgow

CT Evaluation of Optic Nerve Sheath Diameter in Traumatic Brain Injury and its Correlation with Rotterdam CT Scoring

2020 ◽  
Vol 10 (2) ◽  
pp. 26-32
Author(s):  
Mahesh Gautam ◽  
Prakash Kafle ◽  
Manish Raj Pathak ◽  
Ganesh Devkota ◽  
Nawaraj Ranabhat
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Optic Nerve ◽  
Intracranial Pressure ◽  
Ct Scan ◽  
Brain Injuries ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Operating Characteristics ◽  
Nerve Sheath

Introduction: Elevated intracranial pressure is one of the fatal events associated with traumatic brain injury. Optic nerve sheath diameter measurement is an indirect way of assessing intracranial pressure. Optic nerve sheath diameter and Rotterdam score are prognosticators of traumatic brain injury. This study aimed to measure the optic nerve sheath diameter in the initial CT scan and correlate with the Rotterdam score.Methods: Retrospective analytical study comprising consecutive patients from July 2019 to December 2019 who underwent decompressive craniotomy for traumatic brain injuries were included. Optic nerve sheath diameter was measured 3mm behind the eyeball in axial images and Rotterdam CT Score was done on the same CT image in another setting. The receiver operating characteristics curve was plotted to measure the accuracy of optic nerve sheath diameter in predicting the severity of traumatic brain injury.Results: Sixty patients with a mean age of 42.5±14.6years were included. The mean optic nerve sheath diameter with Rotterdam Score of 1, 2 and 3 was 3.8±0.64mm and with Rotterdam Score of 4, 5 and 6 was 5.1±0.66mm. The area under the curve of severe Rotterdam CT Score vs optic nerve sheath diameter was 0.915 (p<0.0001, 95% CI 0.84-0.98) and spearman Rho correlation coefficient value was 0.83 suggesting positive relation.Conclusion: Higher mean optic nerve sheath diameter was observed with a severe Rotterdam CT score. Thus, optic nerve sheath diameter of initial CT scan in traumatic brain injury cases could be an important radiological tool to rule out the presence of raised intracranial pressure.

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