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The arachnoid mata is not the site of a lumbar puncture. The site of a lumbar puncture is between the level of L4 and L5 vertebra in the lumbar section of the spine. This is used because at this point and below, there is no spinal cord to damage.
The LP draws a liquid known as cerebrospinal fluid (CSF) from the meninges surrounding the spinal cord in order to examine for infection risk mainly.
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∙ 15y ago
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What causes a headache after a lumbar puncture?
It is caused by a decreased CSF pressure related to a small leak of CSF through the puncture site.
Why is l 3 good site for lumbar puncture?
Because the spinal cord proper ends at about L1/2, with the cauda equina continuing from then. So, when you take an LP from L3, there is no risk of you damaging the spinal cord.
What side effects can a troponin test cause?
Discomfort or bruising may occur at the puncture site or the person may feel dizzy or faint. Pressure to the puncture site until the bleeding stops reduces bruising. Warm packs to the puncture site relieve discomfort.
What is the aftercare for an acid phosphatase test?
Discomfort or bruising may occur at the puncture site, and the person may feel dizzy or faint. Applying pressure to the puncture site until the bleeding stops will reduce bruising. Warm packs to the puncture site will relieve discomfort
What aftercare is associated with alkaline phosphatase testing?
Discomfort or bruising may occur at the puncture site or the person may feel dizzy or faint. Pressure to the puncture site until the bleeding stops will reduce bruising. Warm packs to the puncture site will relieve discomfort.
What aftercare is associate with Beta2-microglobulin tests?
Discomfort or bruising may occur at the puncture site or the person may feel dizzy or faint. Pressure to the puncture site until the bleeding stops reduces bruising. Warm packs on the puncture site relieve discomfort.
What happens when you warm the site of a dermal puncture?
Increases blood flow to the site
What care should a patient receive after an aldolase test?
Discomfort or bruising may occur at the puncture site and the person may feel dizzy or faint. Pressure to the puncture site until the bleeding stops will reduce bruising. Warm packs to the puncture site will relieve discomfort.
Where in the vertebral column is a lumbar puncture generally done and why is it the site of choice?
Counting from the top of the lumbar vertebrae, the lumbar puncture is usually done between L3&L4 or between L4&L5. The reason for the choice is because the spinal cord ends with the Cauda Equina (essentially horse hair or horse tail) somewhere around L1 or L2. At this point one no longer has a spinal cord, but rather separate nerves. So, above L1, there would be a significant risk of sticking the needle into the solid spinal cord causing pain and damage. Below L3 the individual nerves will move out of the way of the needle and there is less risk of hitting the spinal cord.
Why is a tourniquet placed 3-4 inches above the intended puncture site?
By puncture site I'm guessing you mean a puncture in the epadurmas (skin). It is Placed to limit the blood flow reducing the amount of blood loss. Hope I helped
What is the aftercare for a white blood cell count test?
Discomfort or bruising may occur at the puncture site. Pressure to the puncture site until the bleeding stops reduces bruising;
What aftercare may be needed following an antimyocardial antibody test?
Discomfort or bruising may occur at the puncture site after the blood is drawn or the person may feel dizzy or faint. Pressure to the puncture site until the bleeding stops reduces bruising. Warm packs on the puncture site relieve discomfort.
