opening pressure


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opening pressure

the amount of pressure measured in a manometer after insertion of a spinal needle into the subarachnoid space.

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 ?
The used valves have an opening pressure about 2-3 bar, so the characteristic Q = f(I) couldn't be obtain near the origin.
In the case where there is suspicion of both a traumatic tap and a subarachnoid hemorrhage, other CSF parameters can help discern whether a subarachnoid hemorrhage is present, such as the opening pressure,
liquid,sat] = saturated liquid refrigerant enthalpy at the fully accumulated relief device opening pressure (Btu/[lb.
The classic CSF findings include a high opening pressure, a high protein level and low glucose (3) and raised white blood cell count.
Still, it was the three-man defence which saw more of the ball in the early stages, as opening pressure from Dale saw four corners in four minutes test Wrexham's resolve to varying degrees.
The cerebrospinal fluid (CSF) opening pressure should be between 70 and 245 mm [H.
An LP may be performed to measure opening pressure of cerebrospinal fluid (CSF) and confirm that it is within the normal range (60-240 mm [H.
The opening pressure can be set individually by Witt to meet on-site requirements.
Performing a lumbar puncture to see if a patient with such symptoms has a low opening pressure is an option.