Spontaneous intracranial hypotension (SIH) is caused by single or multiple cerebrospinal fluid (CSF) leaks in the spine with the prototypical symptom of postural headache. One of the characteristic MRI features in SIH is intracranial venous engorgement. This report presents a case of SIH with engorgement of the bilateral superior ophthalmic veins (SOVs) which resume their normal diameters by th...

Stress-induced hyperglycemia (SIH) is a transient condition that occurs in patients with acute diseases such as trauma, stroke, surgery and sepsis. Claude Bernard, the eminent French physiologist, described for the first time in 1855 that critically-ill patients tended to show hyperglycemia (1). In the beginning, it was supposed to be an ancient and adaptive response of tissues requiring large ...

In most materials, there exists a coupling effect between heat and moisture during their transient diffusion. In particular, the coupling effect gives a significant change in the distributions of temperature and moisture concentration in some porous materials and resin composites (Chang, et al., 1991). Moreover, it is known that the absorption of moisture by hygroscopic materials under high-tem...

Silane (SiH(4)) has been studied in a diamond anvil cell from 7-210 GPa by using optical reflection and absorption techniques at 300 K. The reflectivity and transmission measurements showed a dramatic change in the neighbourhood of 100 GPa. On the basis of reflectivity and absorption experimental data, the pressure dependence of the refractive index (n) of solid SiH(4) was derived, which was th...

Chronic subdural hematoma (SDH) is a well-known disease entity and is traditionally managed with surgery. However, when associated with spontaneous intracranial hypotension (SIH), the treatment strategy ought to be modified, as classical treatment could lead to unwanted consequences. A 59-year-old man presented with a case of SIH that manifested as a bilateral chronic SDH. He developed fatal ex...

Spontaneous intracranial hypotension (SIH) is considered to be a very rare disorder. It is characterized by an orthostatic headache that is aggravated with the patient in the upright position and it is relieved by the patient assuming the supine position. SIH is caused by a spontaneous spinal cerebrospinal fluid leakage without the patient having undergone trauma, surgery or dural puncture or h...

Spontaneous intracranial hypotension (SIH) is an increasingly recognised syndrome. Postural headache with typical findings on magnetic resonance imaging (MRI) are the key to diagnosis. Orthostatic headache, low cerebrospinal fluid opening pressure, and diffuse meningeal enhancement on post-contrast T1-weighted MRI brain studies are the major features of this increasingly recognised syndrome. He...

Spontaneous intracranial hypotension (SIH) has increasingly been recognized, and it is well known that SIH is sometimes complicated by chronic subdural hematoma (SDH). In this study, 55 cases of SIH with SDH were retrospectively analyzed, focusing on therapeutic strategies and outcomes. Of 169 SIH cases (75 males, 84 females), 55 (36 males, 19 females) were complicated by SDH. SIH was diagnosed...

In the first article of this series of two we discussed several aspects of the clinical performance of silicone hydrogel (SiH) materials and currently available lenses. In addition to looking at the oxygen performance, the evidence for potentially reduced symptoms of discomfort and end of day dryness with SiHs was examined. In this second article, we will look at additional aspects of SiH mater...