Table of Contents
- 1 What is a cisternal puncture?
- 2 Is a lumbar puncture painful?
- 3 What does a lumbar puncture tell you?
- 4 Where is Cisternal puncture done?
- 5 What is in subarachnoid space?
- 6 What is Ventricular puncture?
- 7 How long are you on bed rest after a lumbar puncture?
- 8 What are normal CSF values?
- 9 How do you check for CSF leak?
- 10 What is unique about the subarachnoid space?
- 11 What is the most common cause of a subarachnoid hemorrhage?
- 12 What should I avoid after a lumbar puncture?
- 13 What is the best position after lumbar puncture?
- 14 What Colour is brain fluid?
- 15 What diseases can a lumbar puncture diagnose?
- 16 When should you not have a lumbar puncture?
- 17 How do you read CSF results?
- 18 What is the normal range for CSF opening pressure?
What is a cisternal puncture?
A suboccipital puncture or cisternal puncture is a diagnostic procedure that can be performed in order to collect a sample of cerebrospinal fluid (CSF) for biochemical, microbiological, and cytological analysis, or rarely to relieve increased intracranial pressure.
Is a lumbar puncture painful?
A lumbar puncture is where a thin needle is inserted between the bones in your lower spine. It should not be painful, but you may have a headache and some back pain for a few days. It’s carried out in hospital by a doctor or specialist nurse.
What does a lumbar puncture tell you?
A lumbar puncture can help diagnose serious infections, such as meningitis; other disorders of the central nervous system, such as Guillain-Barre syndrome and multiple sclerosis; or cancers of the brain or spinal cord.
Where is Cisternal puncture done?
cisternal puncture puncture of the cisterna cerebellomedullaris with a hollow needle inserted just between the occipital bone, to obtain a specimen of cerebrospinal fluid.
What is in subarachnoid space?
The subarachnoid space consists of the cerebrospinal fluid (CSF), major blood vessels, and cisterns. The cisterns are created due to the close and firm adherence of the pia mater to the brain and spinal cord surface while rather loosely to the arachnoid mater.
What is Ventricular puncture?
a surgical procedure in which an opening from the outside is made to the lateral ventricle areas of the brain. The procedure may be performed in order to reduce intracranial pressure, to inject medications (e.g., antibiotics) directly into the brain, or to obtain cerebrospinal fluid.
How long are you on bed rest after a lumbar puncture?
The duty physician advises you that the patient will require four hours bed rest after the lumbar puncture. The duty anaesthetist overhears and says that the patient will be able to go home immediately.
What are normal CSF values?
Normal Results CSF total protein: 15 to 60 mg/100 mL. Gamma globulin: 3% to 12% of the total protein. CSF glucose: 50 to 80 mg/100 mL (or greater than two thirds of blood sugar level) CSF cell count: 0 to 5 white blood cells (all mononuclear), and no red blood cells.
How do you check for CSF leak?
To determine the exact location of the leak, a CT cisternogram would be performed. A CT cisternogram involves using a contrast injected into the spinal fluid through a spinal tap and then performing CT scans. This test identifies the exact location of the CSF leak and the pathway of the drainage into the nose.
What is unique about the subarachnoid space?
 Besides trabeculae, there are major cerebral blood vessels that penetrate the nervous tissue within this space. The subarachnoid space does not have a uniform depth across the central nervous system and forms extensions around the neurovascular structures, spaces, and cisterns.
What is the most common cause of a subarachnoid hemorrhage?
A subarachnoid haemorrhage is most often caused by a burst blood vessel in the brain (a ruptured brain aneurysm). A brain aneurysm is a bulge in a blood vessel caused by a weakness in the blood vessel wall, usually at a point where the vessel branches off.
What should I avoid after a lumbar puncture?
Care after a spinal tap
- Once a spinal tap is completed, you will be instructed to lie flat.
- Avoid strenuous or vigorous exercise for a day or so following the lumbar puncture.
- If you have a headache, lay down as much as possible and drink plenty of fluids.
What is the best position after lumbar puncture?
If a patient develops headache after lumbar puncture with characteristic features, they should be encouraged to lie in a comfortable position, which is mostly in the supine position owing to the postural nature of the symptoms.
What Colour is brain fluid?
Color of the fluid—normal is clear and colorless. Changes in the color of the CSF are not diagnostic but may point to additional substances in the fluid. Yellow, orange, or pink CSF may indicate the breakdown of blood cells due to bleeding into the CSF or the presence of bilirubin.
What diseases can a lumbar puncture diagnose?
A lumbar puncture procedure may be helpful in diagnosing many diseases and disorders, including:
- Certain cancers involving the brain and spinal cord.
- Bleeding in the area between the brain and the tissues that cover it (subarachnoid space)
- Reye syndrome.
When should you not have a lumbar puncture?
Do not perform a lumbar puncture without consultant instruction if any of the following contraindications are present:
- signs suggesting raised intracranial pressure or reduced or fluctuating level of.
- consciousness (Glasgow Coma Scale score less than 9 or a drop of 3 points or more)
- relative bradycardia and hypertension.
How do you read CSF results?
Interpretation of CSF results from lumbar puncture (LP)
- Appearance: Clear.
- Opening pressure: 10-20 cmCSF.
- WBC count: 0-5 cells/µL. < 2 polymorphonucleocytes [PMN])
- Glucose level: >60% of serum glucose.
- Protein level: < 45 mg/dL.
- Consider additional tests: CSF culture, others depending on clinical findings.
What is the normal range for CSF opening pressure?
What is a Normal Opening Pressure? The normal range for CSF is reported differently in various sources, with most reporting a normal range of 7-18 cmH2O in adults,1 though some consider the normal range 5-25 cmH2O. However, a pressure >25 cmH2O or <5 cmH2O should certainly prompt you to look for a source.