The classical radiological findings of iNPH include ventriculomegaly with enlarged lateral ventricles and temporal horns, displacing the corpus callosum upwards towards the falx with a sharp callosal angle and narrowed parietal sulci at the vertex while the Sylvian fissures are enlarged. The seven parameters of the scale derive from previous research. The iNPH Radscale was introduced as a screening tool to structure the assessment of radiological features associated with iNPH and includes mandatory and supportive radiological parameters listed in both diagnostic guidelines. Symptom scales have been launched in order to structure the clinical assessment, and to allow comparison of symptoms over time and between sites. The importance of identifying and correctly diagnose iNPH patients is underlined by the fact that up to 80% improve after treatment with a ventriculoperitoneal shunt. To select candidates for shunt surgery, supplemental tests, such as the tap-test, are often used. The diagnostic guidelines for iNPH are founded on typical symptoms combined with radiological findings. The clinical symptoms of iNPH may overlap with those of other neurological conditions such Alzheimer’s disease and Parkinson disease. The disease is more common than previously expected, with a prevalence of 3.7% for those over 65 years old, and is increasing with age. Idiopathic normal pressure hydrocephalus (iNPH), is a neurological condition affecting gait, balance, cognition and continence. The address for such a request is: Regionala Etikprövningsnämnden i Umeå, Samverkanshuset, C/o Umeå Universitet, 901 87 UMEÅ SWEDEN E-mail: The authors received no specific funding for this work.Ĭompeting interests: The authors have declared that no competing interests exist. Requests may be sent to the corresponding author or to the Regional Ethics Committee, Umeå. This is because it was stated in the application to the ethical board, as well as in the information to the study participants, that data are kept confidential and only accessible for the researchers responsible for the study. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: Data are available on request, provided that approval from the Regional Ethics Committee is given. Received: NovemAccepted: ApPublished: April 24, 2020Ĭopyright: © 2020 Kockum et al. Burger, Goethe University Hospital Frankfurt, GERMANY Citation: Kockum K, Virhammar J, Riklund K, Söderström L, Larsson E-M, Laurell K (2020) Diagnostic accuracy of the iNPH Radscale in idiopathic normal pressure hydrocephalus.
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