Abstract:
:Idiopathic intracranial hypertension (IHH or pseudotumor cerebri) is an uncommon but important cause of headache, characterized by raised intracranial pressure (ICP) in the absence of infection and intracranial pathology on neuroimaging. Lumbar puncture (LP) is usually contra-indicated in situations where the ICP is suspected to be high. However, tonsillar herniation is hardly ever reported after an LP in patients suspected of having IHH. The author postulates that increasing brain stiffness reported in IHH may be the reason for this observation. On the other hand, tonsillar herniation may occur as a late complication following lumbo-peritoneal shunt insertion (occasionally used in the management of patients with IHH). This may be due to the decrease in brain stiffness, i.e. an increase in brain compliance as the condition improves following shunt insertion. Recent advances in magnetic resonance imaging techniques are likely to help us further in understanding the pathogenesis of this curious condition.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Salman Mdoi
10.1054/mehy.1998.0756keywords:
subject
Has Abstractpub_date
1999-10-01 00:00:00pages
270-1issue
4eissn
0306-9877issn
1532-2777pii
S0306-9877(98)90756-3journal_volume
53pub_type
杂志文章abstract::Most cancer cells differ from normal cells in that they show higher beta-glucuronidase activity and lower pH of their cytoplasm. Anti-cancer drugs can be designed which take advantage of these gradients to deliver maximal toxicity to tumors and minimal toxicity to normal tissue. Many design criteria are suggested here...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(80)90035-3
更新日期:1980-01-01 00:00:00
abstract::The role of ozone on earth is controversial, as in the stratosphere it is protective against excessive ultra violet irradiation, and in the troposphere it is toxic for animals and plants. The effectiveness of ozone against pathogens is well recognized and ozone appears to be the best agent for sterilization of water. ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(96)90016-x
更新日期:1996-02-01 00:00:00
abstract::Bony abnormalities are common findings in cases of neurofibromatosis 1. We might hypothesize that neurofibromin, the protein encoded by the neurofibromatosis 1 gene, plays important roles in bone development. Loss of function of oligodendrocyte-myelin glycoprotein gene and increased activity of ras p21 might increase ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(02)00225-6
更新日期:2003-04-01 00:00:00
abstract::Organisms release their antigens into the environment. Some antigens are volatile and may pass into the blood of other organisms during respiration. Fetal antigens enter the mother's bloodstream through the placenta. Foreign antigens in the blood can cause various chemical changes and may initiate an immune reaction. ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(95)90211-2
更新日期:1995-07-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2006.11.044
更新日期:2007-01-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2013.10.010
更新日期:2013-12-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2011.02.038
更新日期:2011-06-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2015.03.004
更新日期:2015-06-01 00:00:00
abstract:BACKGROUND:Short-term acute care public county hospitals in the US were a mainstay of much "safety net" medical care in the early twentieth century. The private sector currently provides much of what was in the past public medical care. Does this transition affect health care indices? METHODS:The presence of public ho...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2019.109265
更新日期:2019-11-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2004.02.036
更新日期:2004-01-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1998.0752
更新日期:1999-09-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.110211
更新日期:2020-11-01 00:00:00
abstract::The lymphatic system is an important component of human health and is critical in maintaining microcirculatory flow and immune system homeostasis. During septic shock, increased capillary permeability results in excess filtration of intravascular fluid and solutes producing interstitial edema with subsequent hydrostat...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.109748
更新日期:2020-09-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(97)90196-1
更新日期:1997-10-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2019.109264
更新日期:2019-08-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(82)90012-3
更新日期:1982-05-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(76)90039-6
更新日期:1976-09-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2012.01.001
更新日期:2012-04-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(83)90067-1
更新日期:1983-06-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(02)00233-5
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Operative risk prediction systems (logistic EuroSCORE I, EuroSCORE II and STS Score) are employed together with multidisciplinary discussion to contraindicate conventional surgery in patients with valvular heart disease and propose the employment of alternative transcatheter procedures. The EuroSCORE I has b...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2015.01.043
更新日期:2015-05-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2015.05.019
更新日期:2015-09-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2013.01.035
更新日期:2013-05-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(78)90051-8
更新日期:1978-03-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(93)90068-2
更新日期:1993-08-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2000.1201
更新日期:2001-04-01 00:00:00
abstract::For a virus to survive and replicate in an organism, it must employ strategies to evade and misdirect the host's immune response. There is compelling evidence that the primary immunoevasive strategy utilized by the SARS virus, like influenza, is to inhibit its host's corticosteroid stress response. This is accomplishe...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2004.04.009
更新日期:2004-01-01 00:00:00
abstract::The non-invasive assessment of chronic tissue hypoxia is difficult. Pulse oximetry only allows the peripheral oxygen saturation to be measured, while the detection of hyperlactataemia needs to take into account the fact that the accumulation of lactic acid may result from several causes other than prolonged tissue hyp...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2018.01.014
更新日期:2018-03-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.06.011
更新日期:2008-01-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2004.01.041
更新日期:2004-01-01 00:00:00