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Doctor insights on: Lumbar Puncture Increased Intracranial Pressure

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If increased intracranial pressure(icp) is contraindicated in lumbar puncture, why one of the indication of this procedure is to decrease the icp?

If increased intracranial pressure(icp) is contraindicated in lumbar puncture, why one of the indication of this procedure is to decrease the icp?

Different situations: It depends on the clinical situation. If there is a mass lesion in the brain that causes a differential pressure between the supratentorial and infratentorial areas, lumbar puncture can accentuate the difference and lead to herniation of brain downward. If there isn't this differential (communicating hydrocephalus), a spinal tap can decrease the pressure uniformly throught the CSF system. ...Read more

Dr. Dariush Saghafi
387 doctors shared insights

Lumbar Puncture (Definition)

To test for meningitis or multiple sclerosis or a variety of problems, a small needle is inserted into the lumbosacral cistern to obtain spinal fluid for testing ...Read more


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Why is it dangerous to do the lumbar puncture in a patient with increased intracranial pressure?

Can make it worse: Study of 30 patients with raised intracranial pressure whose condition worsened after lumbar puncture emphasizes the danger of carrying this out in the presence of raised intracranial pressure. In half the cases deterioration was immediate and dramatic, and in the other half it occurred within 12 hours. ...Read more

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Is neck and back pain possible signs of increased intracranial pressure?

Is neck and back pain possible signs of increased intracranial pressure?

No it is not: No by itself nack and back pain does not indicate or raises suspicion of increased intracranial pressure
just inquisitive why did you ask this question? ...Read more

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I had a 1.3cm pineal cyst found in may. Lately had funny visual symptoms and head pressure. An opthamologist said the back of my eye looked normal. Does that rule out increased intracranial pressure?

I had a 1.3cm pineal cyst found in may. Lately had funny visual symptoms and head pressure. An opthamologist said the back of my eye looked normal. Does that rule out increased intracranial pressure?

Probably: However, if you continue to have headaches you should see the ophthalmologist again for a repeat exam and visual field testing. The only way to definitively rule out increased intracranial pressur is a lumbar puncture. ...Read more

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Why does hypertension cause increased intracranial pressure?

Why does hypertension cause increased intracranial pressure?

No it does not: Increase intracranial Pressure is the increase pressure inside the skull and thereby in the cerebrospinal fluid and brain itself.
But it is not caused by Systemic Hypertension ...Read more

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Why is a person with increased intracranial pressure given the diuretic mannitol?

Why is a person with increased intracranial pressure given the diuretic mannitol?

Mannitol: Mannitol works to reduce intracranial pressure through its diuretic properties. It is usually used in the acute setting (after head trauma). ...Read more

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What are the symptoms of mild increased intracranial pressure?

What are the symptoms of mild increased intracranial pressure?

Mild????: There may be no symptoms of mild increased intracranial pressure. And how do you know it is mild? I'm not sure what mild increased intracranial pressure is because increased pressure is increased pressure. Increased pressure is not good.
Symptoms may be headache, visual loss, dizziness, weakness, delerium, confusion, and many others. ...Read more

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Will fludrocortisone 0.1mg cause a lot of increased intracranial pressure? Just wondered.

Will fludrocortisone 0.1mg cause a lot of increased intracranial pressure? Just wondered.

May or may not: Fludrocortisone is mineralocortcoid helps body to retain sodium. It depends on why one is taking this drud, if one has salt retaining hormone deficiency like addison disease and is taking right dose then no side effects.
Excess of it can cause high blood pressure bu not increas intracranial pressure. This drug is also used for orthodtatic low blood pressure. In summary, it can cause high blood press. ...Read more

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Could brain tumors always cause increased intracranial pressure?

Could brain tumors always cause increased intracranial pressure?

It depends on size: There is limited space inside the skull. So any space occupying lesion causes rise in intracranial pressure once it gets to a size above 1 or 2 cms. ...Read more

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Why does increased intracranial pressure cause projectile vomiting?

Why does increased intracranial pressure cause projectile vomiting?

Not sure: Increased pressure in the brain/skull is often associated with vomiting. We don't know exactly how the pressure triggers the vomiting center in the brainstem, it just does. Since sudden onset of headache and vomiting can be a sign of a serious condition see you doctor immediately. This is especially true if the vomiting occurs during the night while sleeping. ...Read more

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Is projectile vomiting associated with increased intracranial pressure?

Is projectile vomiting associated with increased intracranial pressure?

Projectile vomiting: Yes, projectile vomiting can be associated with increased intracanial pressure, in addition to bad headache, some blurring of vision, etc. ...Read more

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Can bilateral mydriasis indicate increased intracranial pressure? Both my pupils react evenly, but my doctor was still surprised at this.

Can bilateral mydriasis indicate increased intracranial pressure? Both my pupils react evenly, but my doctor was still surprised at this.

Mydriasis: Or pupil dilation is quite common in younger people. They tend to have naturally larger pupils. As long as they are equal and both react well, then this is totally normal. On the other hand, an increase in intracranial pressure can cause one or both pupils to dilate but typically they don't react well in this situation. ...Read more

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What are the symptoms of increased intracranial pressure?

What are the symptoms of increased intracranial pressure?

Intracranial pressur: Individual with increased intracranial pressure usually complain of headaches and may have vomiting, blurred vision, and horizontal diplopia. The headaches are diffuse, worse at night, and often aggravated by sudden movement. Less common complaints include irritability, transitory visual obscurations, dizziness, and tinnitus. ...Read more

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What can be done for someone with craniostenosis to relieve increased intracranial pressure?

What can be done for someone with craniostenosis to relieve increased intracranial pressure?

Craniosynostosis =: Premature fusion of one or more sutures, fibrous joints between the plates of bone in an infant's skull. Pediatric neurosurgeons perform minimally invasive surgery followed by helmet molding therapy for infants 3 months & younger. For older infants, they perform calvarial vault remodeling. Craniosynostosis is usually sporadic, but can occur in a variety of inheritable genetic syndromes. ...Read more

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Why is a person with increased intracranial pressure given the drug mannitol?

Why is a person with increased intracranial pressure given the drug mannitol?

Decrease pressure: Mannitol is used to manipulate osmotic (or oncotic) forces shifting water from the tissue into the blood vessels. In the kidney, mannitol increases water excretion. So, in patients with increased intracranial pressure, the intent is to decrease the pressure by using mannitol to "pull" fluid out of the brain and then excrete it via the kidneys. ...Read more

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How can you tell the difference between impeded blood flow (increased intracranial pressure) and sinus pressure?

How can you tell the difference between impeded blood flow (increased intracranial pressure) and sinus pressure?

Location: Increased intracranial pressure would be more generalized "headache" or pressure. I would expect there to be neurologic deficits as well: change in mentation, gait, speech, etc. Sinus pressure is located: maxillary — below eyes; ethmoid — between eyes; frontal — above eyes; sphenoid — on top of head or very back of head. Sinus pressure is usually very localized. ...Read more

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What's increased intracranial pressure?

Above 15 cm H2O: Normal intracranial pressure is 5-15 cm h2o.
Anything above that is increased. ...Read more

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Just how high is increased intracranial pressure.?

Above 15 cm H2O: Normal intracranial pressure is 5 – 15 cm h2o.
Anything above 15 cm h2o is increased. ...Read more

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What would happen if you have increased intracranial pressure?

What would happen if you have increased intracranial pressure?

Can lose your vision: Blindness can ensue, brain damage, weakness, lethargy, confusion- all bad things. There are obviously many more. ...Read more

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What should normal inter crainal pressure be during my last lumbar puncture my beginning pressure was 38 I was just wondering i also ha e iih?

What should normal inter crainal pressure be during my last lumbar puncture my beginning pressure was 38 I was just wondering i also ha e iih?

Positional: In the side-lying position intracranial pressure as measured during lumbar puncture should be between 100 and 150 cm of water pressure. If pressure is measured while sitting upright, pressure level in fluid column should extend to base of skull (foramen magnum) but numerically will exceed 150. The rest of your question is unclear. Are you asking about a post-spinal headache? ...Read more

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I had a lumbar puncture 2 days ago. Pain in my head and neck is horrendous so much so I cannot sit upright for the pressure/pain what should I do?

Spinal headache: This is a spinal headache. The small hole in the covering of the nerves and spinal cord that allowed the doctor to get the fluid is stil leaking. The headache is worse when you head is up and better when your are down. Try caffeine or have your doctor give you medicean that contains a barbiturate. If these fail you may need a blood patch. ...Read more

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Today I had a lumbar puncture done but my back is absolutely hurting so much its incredible. The spinal fluid was clear by the way and the pressure was 19 but he said that was normal because of slight stress. But my back is hurting like crazy sinds the pu

Today I had a lumbar puncture done but my back is absolutely hurting so much its incredible. The spinal fluid was clear by the way and the pressure was 19 but he said that was normal because of slight stress. But my back is hurting like crazy sinds the pu

Sorry to hear that: Sometimes LP's can result in lower back pain. Your doctor should've prescribed something for your pain in case it developed. Also, you should drink plenty of fluids and be taking it easy from heavy exertional activities for a couple of days. It'll get better. But if it gets worse or something feels like it's swelling in the low back etc. you should contact the doctor right away. ...Read more

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I need a 2nd Lumbar Puncture due the possibility of IH. Because in the 1st they didn't take the pressure. Is this procedure safe, too often?

I need a 2nd Lumbar Puncture due the possibility of IH. Because in the 1st they didn't take the pressure. Is this procedure safe, too often?

Spinal tap questions: This procedure is generally considered safe in an experienced doctor's hands. I would ask how many procedures they have done before. There is also the option sometimes of having interventional radiology do the procedure which might make it easier. There are always small risks with a procedure like that-since it is a very long needle entering a deep space (bleeding, risk of infection, nerve damage) ...Read more

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Can they take out cfs from a VP shunts valve and measure the pressure to see how high it is instead of needing a lumbar puncture?

Tap: The safest and best route of having CSF removed in anyone, with/without shunt, is via lumbar puncture/spinal tap. An alternative route is a cervical tap, which is higher risk and more painful in general. In the right hands, an LP is minimally painful. I sometimes recommend a relaxing medication prior to having one & request the performing provider use sufficient numbing medication. ...Read more

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I frequently can see black spots in my eyes that pulsate like my heartbeat. What may cause this? Lumbar puncture pressure of 30

I frequently can see black spots in my eyes that pulsate like my heartbeat. What may cause this? Lumbar puncture pressure of 30

Full eye exam/MRI: Many things can cause this. Typically, black spots are "floaters" or problems with the vitreous fluid in your eye. However, pulsating can be a problem with the optic nerve and vasculature of your eye. Given your LP "pressure of 30" you need a pupil exam, a full exam of your retina and optic nerve, and likely visual field testing with OCT testing of your optic nerves, CT/MRI scan brain ...Read more

Dr. Hirenkumar Italia
1 doctor shared a insight

Lumbar (Definition)

Refers to something related to the area about the lower part of the ...Read more