opening pressure


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opening pressure

[′ōp·ə·niŋ ‚presh·ər]
(mechanical engineering)
The static inlet pressure at which discharge is initiated.
References in periodicals archive ?
IIH leads to an increase in CSF opening pressure without an intracranial mass or ventriculomegaly and its pathophysiology is not yet understood (12).
Elevated LP opening pressure > 250 mm [H.sub.2]O (adults); > 280 mm [H.sub.2]O (children); > 250 mm [H.sub.2]O if not sedated or obese (children) IIH without papilledema qualifies if criteria B-E are met and the patient also has unilateral or bilateral abducens nerve palsy; or in the absence of papilledema and abducens nerve palsy, an IIH diagnosis can be suggested if criteria B-E are met and 3 of the following neuroimaging criteria are satisfied: 1.
Almost 90% of cases have abnormalities in the CSF examination; most notably increased opening pressure, elevated leukocytes, elevated protein and decreased glucose (1,12,14,15).
(71), there were more female patients and patients with abnormal opening pressure, mostly due to a high rate of idiopathic intracranial hypertension.
of cylinders One Type Four stroke, water cooled Bore and stroke 87.5mm and 110mm CR 17.5:1 Engine capacity 0.661liters Rated power 4.4kW @ 1500rpm Nozzle opening pressure 200-205 bar Start of injection 23 degree BTDC IVO 4.5 degree BTDC IVC 35.5 degree ABDC EVO 35.5 degree BBDC EVC 4.5 degree ATDC Kirloskar oil engine TAF AVL Di gas 444 No.
Following measurement of an opening pressure, 10-17 cc of iodinated contrast is infused.
This continuous delivery of air increased ME pressure to the level at which the ET lumen was forced to passively open (opening pressure [PO]).
Currently, the presence of papilledema, normal neurologic exam except for abnormal sixth cranial nerve, normal cerebral spinal fluid, elevated lumbar opening pressure, and normal imaging are needed for a definitive diagnosis.
Cerebrospinal fluid (CSF) analysis showed: opalescent fluid; opening pressure of 38 cm[H.sub.2]O; WBC of 28,800/ cmm with 88% neutrophils, 8% lymphocytes; glucose of 6 mg/dL (serum glucose of 296) and protein of 508 mg/dL.
An improvement in the tubal opening pressure was observed for the deviated side and contralateral side in the early and late post-septoplasty period.
Because of the many overlapping symptoms between intracranial hypertension (ICH) and migraines, some of these being headache, nausea and/or vomiting, vision impairment, dizziness, vertigo, light sensitivity, etc., the two may be clinically indistinguishable if the initial tests, especially lumbar puncture opening pressure (LPOP) is within reference range, or if there is no evidence of papilledema on fundoscopy.