SONOGRAPHIC OPTIC NERVE SHEATH DIAMETER AS A SCREENING TOOL FOR DETECTION OF ELEVATED INTRACRANIAL PRESSURE

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AMINI AFSHIN; EGHTESADI RAZIEH; MANSOURI BEHNAM; KARIMAN HAMID; ARHAMI DOLATABADI ALI; HATAMABADI HAMIDREZA; KABIR ALI

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Journal: Archives of Academic Emergency Medicine Year:2013 | Volume:1 | Issue:1 Page(s): 15-19

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Title

SONOGRAPHIC OPTIC NERVE SHEATH DIAMETER AS A SCREENING TOOL FOR DETECTION OF ELEVATED INTRACRANIAL PRESSURE

Author(s)

Keywords

INTRACRANIAL PRESSURE

TRAUMATIC BRAIN INJURY

ULTRASONOGRAPHY

OPTIC NERVE

TOMOGRAPHY

Abstract

Introduction: Timely diagnosis and treatment of post-traumatic elevated INTRACRANIAL PRESSURE (EICP) could be re-duced morbidity and mortality, and improved patients’ outcome. This study is trying to evaluate the diagnostic accuracy of sonographic OPTIC NERVE sheath diameter (ONSD) in detection of EICP. Methods: Sonographic ONSD of patients with head trauma or cerebrovascular accident suspicious for EICP were evaluated by a trained chief resident of emergency medicine, who was blind to the clinical and brain computed TOMOGRAPHY scan (BCT) findings of pa-tients. Immediately after ULTRASONOGRAPHY, BCT was performed and reported by an expert radiologist without awareness from other results of the patients. Finally, ultrasonographic and BCT findings regarding EICP were compared. To evaluate the ability of sonographic ONSD in predicting the BCT findings and obtain best cut-off level, receiver operating characteristic (ROC) curve were used. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), positive likelihood ratio (PLR), and negative likelihood ratio (NLR) of sonographic ONSD in determining of EICP was calculated. P<0.05 was considered as statistically significant. Results: There were 222 patients (65.3% male), with mean age of 42.2±19.5 years (range: 16-90 years). BCT showed signs of EICP, in 28 cases (12.6%). The means of the ONSD in the patients with EICP and normal ICP were 5.5 ± 0.56 and 3.93 ± 0.53 mm, respectively (P<0.0001). ROC curve demonstrated that the best cut off was 4.85 mm. Sensitivity, specificity, PPV, NPV, PLR, and NLR of ONSD for prediction of EICP were 96.4%, 95.3%, 72.2%, 98.9%, 20.6, and 0.04, respectively. Conclusion: Sonographic diameter of OPTIC NERVE sheath could be considered as an available, accurate, and noninvasive screening tool in determining the elevated INTRACRANIAL PRESSURE in cases with head trauma or cere-brovascular accident.

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APA: Copy

AMINI, AFSHIN, EGHTESADI, RAZIEH, MANSOURI, BEHNAM, KARIMAN, HAMID, ARHAMI DOLATABADI, ALI, HATAMABADI, HAMIDREZA, & KABIR, ALI. (2013). SONOGRAPHIC OPTIC NERVE SHEATH DIAMETER AS A SCREENING TOOL FOR DETECTION OF ELEVATED INTRACRANIAL PRESSURE. ARCHIVES OF ACADEMIC EMERGENCY MEDICINE (EMERGENCY), 1(1), 15-19. SID. https://sid.ir/paper/339514/en

Vancouver: Copy

AMINI AFSHIN, EGHTESADI RAZIEH, MANSOURI BEHNAM, KARIMAN HAMID, ARHAMI DOLATABADI ALI, HATAMABADI HAMIDREZA, KABIR ALI. SONOGRAPHIC OPTIC NERVE SHEATH DIAMETER AS A SCREENING TOOL FOR DETECTION OF ELEVATED INTRACRANIAL PRESSURE. ARCHIVES OF ACADEMIC EMERGENCY MEDICINE (EMERGENCY)[Internet]. 2013;1(1):15-19. Available from: https://sid.ir/paper/339514/en

IEEE: Copy

AFSHIN AMINI, RAZIEH EGHTESADI, BEHNAM MANSOURI, HAMID KARIMAN, ALI ARHAMI DOLATABADI, HAMIDREZA HATAMABADI, and ALI KABIR, “SONOGRAPHIC OPTIC NERVE SHEATH DIAMETER AS A SCREENING TOOL FOR DETECTION OF ELEVATED INTRACRANIAL PRESSURE,” ARCHIVES OF ACADEMIC EMERGENCY MEDICINE (EMERGENCY), vol. 1, no. 1, pp. 15–19, 2013, [Online]. Available: https://sid.ir/paper/339514/en

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