• idiopathic normal pressure hydr
  • The objective of this study was to investigate the relationship between ICP and CSF outflow in 30 patients investigated for idiopathic normal-pressure hydrocephalus. (diva-portal.org)
  • Idiopathic normal pressure hydrocephalus (INPH) is a syndrome signified by a disturbance to the CSF system, where the cause is unknown and the diagnosis is difficult to determine. (diva-portal.org)
  • dural
  • CONCLUSION: If our results are applicable to the brain, changing to an upright position following a lumbar dural puncture may generate a negative hydrostatic force and a negative interstitial cerebral pressure, causing an increased transvascular pressure and dilation of the cerebral outflow veins. (biomedsearch.com)
  • 2 , 3 , 28 - 31 , 35 , 36 A CT myelogram, dynamic CT myelogram, or digital substraction myelogram can identify a dural defect that connects the intrathecal space with the fluid-filled collection. (ajnr.org)
  • 30 , 31 , 35 CSF hypovolemia (craniospinal hypotension) is a disorder that is frequently associated with dural defects, occasionally with intraspinal fluid collection of variable longitudinal extent and rarely with red blood cells (RBCs) or xanthochromia in the CSF. (ajnr.org)
  • normal
  • CONCLUSIONS: The results of this study support the classic textbook theory of a pressure-independent Rout in the normal ICP range, where the CSF system is commonly operating. (diva-portal.org)
  • Respiratory effects were variable, but most commonly a slightly increased rate and depth of respiration occurred at first, with a return towards normal as the systemic arterial pressure rose. (ahajournals.org)
  • CSF pressure is usually normal. (wikipedia.org)
  • The name "normal pressure" came out of a 1965 medical paper describing cases of hydrocephalus where the symptoms occurred in the presence of supposedly normal cerebrospinal-fluid pressure. (wikipedia.org)
  • We now know that "normal pressure" is a misnomer. (wikipedia.org)
  • There are four types of hydrocephalus: communicating, non-communicating, ex-vacuo, and normal pressure. (wikipedia.org)
  • Normal pressure hydrocephalus is estimated to affect about 5 per 100,000 people with rates increasing with age. (wikipedia.org)
  • Hakim's triad of gait instability, urinary incontinence and dementia is a relatively typical manifestation of the distinct entity normal pressure hydrocephalus (NPH). (wikipedia.org)
  • patients
  • The simulations supported the recommendation to maintain sea-level pressure during air ambulance transportation of patients with suspected intracranial air. (diva-portal.org)
  • Patients with identified risk factors before the procedure constituted group H and received prophylactic sequential CSF pressure measurement and CSF withdrawal. (noninvasiveicp.com)
  • In recent years, an extra-arachnoid longitudinally extensive intraspinal fluid-filled collection has been frequently noted in patients with SS. (ajnr.org)
  • blood
  • If this adaptation is brought about by compensatory cerebral vasodilation, this investigation is in accord with the concept of Dickinson and Thomson that some forms of chronic high blood pressure in man might be initiated by cerebral artery occlusion or narrowing of sufficient severity and extent to prevent adequate compensatory vasodilation. (ahajournals.org)
  • A liquid biopsy, also known as fluid biopsy or fluid phase biopsy, is the sampling and analysis of non-solid biological tissue, primarily blood. (wikipedia.org)
  • When studying the central nervous system, cerebrospinal fluid may be sampled instead of blood. (wikipedia.org)
  • He made a comeback in 1934, with some good results, but also showed symptoms of high blood pressure. (wikipedia.org)
  • citation needed] The cerebral perfusion pressure (CPP) can be calculated from data obtained from the EVD and systemic blood pressure. (wikipedia.org)
  • conscious
  • The intracranial pressures of conscious, lightly anesthetized and fully anesthetized dogs were altered by means of previously implanted intraventricular cannulas, while systemic arterial pressures were simultaneously measured. (ahajournals.org)
  • arterial pressure
  • The results of these experiments are compatible with the hypothesis that basal systemic arterial pressure during sleep in some degree depends on the cerebrovascular resistance, although it will be important to determine the nature of the slow adaptation seen in these experiments. (ahajournals.org)
  • Headache
  • 2 , 28 , 29 , 31 , 36 Some reports have also noted an association between SS and CSF hypovolemia and low-pressure headache. (ajnr.org)
  • cranium
  • Discomfort sensation that occurred in rare cases was not a consequence of either hypo- or hypertension as such but of the absence of CNS ability to adapt rapidly to the changes of the pressure in the cranium. (semanticscholar.org)
  • increase
  • The pulse rate tended to increase slightly, or remain the same, providing CSF pressure was not increased too greatly or too rapidly. (ahajournals.org)