Bedside sonographic measurement of optic nerve sheath diameter as a predictor of intracranial pressure in ED

• Published in: The American journal of emergency medicine 2016-06, Vol.34 (6), p.963-967
• Main Authors: Komut, Erdal, Kozacı, Nalan, Sönmez, Bedriye Müge, Yılmaz, Fevzi, Komut, Seval, Yıldırım, Zeliha Nilgün, Beydilli, İnan, Yel, Cihat
• Format: Article
• Language: English
• Subjects: Adult; Age; Coma; Computed tomography; Confidence intervals; Consciousness; Edema; Emergency medical care; Emergency Service, Hospital; Female; Head injuries; Humans; Intracranial Hypertension - diagnostic imaging; Lesions; Male; Medical diagnosis; Medical imaging; Middle Aged; Mortality; Optic nerve; Optic Nerve - diagnostic imaging; Pathology; Point-of-Care Testing; Prospective Studies; Sensitivity and Specificity; Statistical analysis; Studies; Tomography, X-Ray Computed; Transducers; Ultrasonography
• ISSN: 0735-6757; 1532-8171
• DOI: 10.1016/j.ajem.2016.02.012

Ocular ultrasonography of optic nerve sheath diameter (ONSD) to determine intracranial pressure (ICP) has become favorable in recent years. To demonstrate the efficacy of ONSD measurement in determining the ICP increase due to nontraumatic events in the emergency department. A total of 100 patients with suspected nontraumatic intracranial event were enrolled in this prospective study. Patients were divided equally into 2 groups including 50 patients as group I with pathology on cranial computed tomography (CT) and group II with normal cranial CT. Prior to CT scans, patients underwent ONSD measurement by a radiologist using 11- and 14-MHz transducers. The ONSD values of groups I and II were 5.4±1.1and 4.1±0.5mm, respectively. Optic nerve sheath diameter was found to be larger on the side of lesion in patients with a lesion (P