opening pressure


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opening pressure

Abbreviation: OP
The pressure of the cerebrospinal fluid that is detected just after a needle is placed into the spinal canal. It is normally 100 to 180 mm H20.
See also: pressure
References in periodicals archive ?
Practice patterns and opening pressure measurements using fluoroscopically guided lumbar puncture.
mano--IVGS 50 6.0 6.1 <0.001 CSF = cerebrospinal fluid; OP = opening pressure; IVGS = intravenous giving set; SD = standard deviation, Diff mano--IVGS = difference between the manometer and IVGS pressure reading.
Among the continuous variable ET function tests (Table 3), the FRT at 11 mL/min pump speed revealed an average opening pressure of 580[+ or -]333 mmH2O (range 201-1363).
We used intranasal splints with airway in our study to minimize the influence of nasal package on the ET opening pressure.
If the most common tests and presentations of ICH are normal, such as lumbar puncture opening pressure, papilledema and sella turcica content, one could mistakenly reject ICH as the suspected etiology.
The opening pressure paid off just three minutes later when Rams defender Luke Thompson beat Finnigan to a through-ball but could only divert it past his own goalkeeper and into the net.
Cerebrospinal fluid high opening pressure occurred in the majority of our patients and persisted despite adequate antifungal treatment.
From the additional workout, a lumbar puncture was performed, with a normal opening pressure, and cerebrospinal fluid (CSF) analysis revealed normal features.
The opening pressure of cerebrospinal fluid (CSF) was 380 mm[H.sub.2]O and closing pressure was 180 mm[H.sub.2]O.
Consequently, the oil jet valve opening pressure was set to 170 kPa.
[3,5,10-13] Moreover, CSF characteristics on lumbar tap were also chosen in the construction of the mathematical model since they are also found to be significant factors by other studies, especially the polymorphonuclear cell count, protein count, as well, the opening pressure (OP).
The CSF opening pressure was 26 cm [H.sub.2]O (normal range 5 to 20 cm [H.sub.2]O); cell count was elevated at 100/[micro]L, 90% lymphocytes; CSF glucose of 43 mg/dL (40-85 mg/dL) and elevated protein at 138 mg/dL (15-45 mg/dL).