Doctor insights on:
Lumbar Puncture Increased Intracranial Pressure
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
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
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?
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
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
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
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
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
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
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
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
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
Above 15 cm H2O:
Normal intracranial pressure is 5 – 15 cm h2o.
Anything above 15 cm h2o is increased. ...Read more
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
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
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
ICP: Cerebral tumor, hydrocepahlus, intracranial bleed.Get a more detailed answer ›
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
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
If a patient is unable to have a lumbar puncture, what are some other options to monitor CSF pressure — specifically inside the head?
My wife had a Lumbar puncture and a blood patch for the headache that came after She now has alot of pressure and pain around her eyes should we worry?
Have F/U visit: You are likely "on the mend" but just to be more comfortable, contact doctor and have a followup appt. ...Read more
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
- Talk to a doctor online
- Lumbar puncture for high intracranial pressure
- Normal opening pressure lumbar puncture
- Is a lumbar punture dangerous for someone with low intracranial pressure?
- Lumbar puncture opening pressure normal range
- Why does increased intracranial pressure cause projectile vomiting?
- Lumbar puncture
- Increased intracranial pressure vital signs