Richard Choi, DO, FNCS
Richard Choi, DO, FNCS

@rkchoi

16 Tweets Aug 22, 2024
1/ Hi ๐Ÿ‘‹ #neurotwitter #medtwitter #neurocritcare, today we will be breaking down the following paper from @neurocritcareJ: x.com
Follow along to gleam over the most exciting and cool parts, including something you may have not heard of before!
@NeurocritCareJ 2/ โฌ† #ICP in #meningitis is something that is commonly seen and certainly a topic that I have covered multiple other times. For some examples, see below:
x.com
x.com
x.com
@NeurocritCareJ 3/ โฌ†ICP in meningitis is very common & caused by:
โœ… edema
โœ… loss of autoregulation
โœ… venous congestion
โœ… hydrocephalus
@NeurocritCareJ 4/ Despite how common it is, why do we not place #ICPmonitors more frequently in this pt population? (Pro tip: donโ€™t forget to read the accompanying editorial written by @provenciojavier! x.com)
@NeurocritCareJ @ProvencioJavier 5/ @ESCMID recommends ๐Ÿˆscan and more research on when to use ICP monitors and the Swedish ID society recommends ICP monitoring in deteriorating or comatose patients but how often are we doing it now? That was what this paper was trying to answer!
@NeurocritCareJ @ProvencioJavier @ESCMID 6/ In this meta-analysis, authors looked for papers talking about ICP monitoring and meningitis and they came up with 33 papers, of which 17 + 1 from reference list, were included:
@NeurocritCareJ @ProvencioJavier @ESCMID 7/ In summary:
๐Ÿ”ข Sample size: variable
๐Ÿ› Study type: mostly retrospective
๐ŸŒ Origin of study: Euro>US>India
๐Ÿ“ ICP measured via: EVD> Intraparenchymal monitor
โœ… Main indication: deteriorating neuro status
@NeurocritCareJ @ProvencioJavier @ESCMID 8/ Here are some of their findings:
๐Ÿˆ scans:
โ›” reliable indicators of ICP
โ˜  if demonstrating ICP elevation, patients had worse outcome
This makes sense to me as CT is not a sensitive marker of ICP elevation so if you are waiting for CT changes, you may be late to the gameโ€ฆ
@NeurocritCareJ @ProvencioJavier @ESCMID 9/ ICP management:
Only 1 trial compared CPP ๐ŸŽฏ vs. ICP ๐ŸŽฏ (ie., lower ICP vs. augment MAP) and found that CPP targeted management was superior and reduced ๐Ÿ‘‚loss!
Most studies lacked standardized therapeutic approaches.
1 study used #LundConcept
@NeurocritCareJ @ProvencioJavier @ESCMID 10/ What is the #LundConcept? From University of Lund, Sweden, focuses on โ€œvolume-targetedโ€ strategy and regulation of vol of ๐Ÿง compartments.
If transcapillary ๐Ÿ’ง exchange is regulated by hydrostatic (-) colloid pressure, then when the #BBB is injured, ๐Ÿ‘†CPP will cause > edema.
@NeurocritCareJ @ProvencioJavier @ESCMID 11/ So management focuses on:
๐Ÿงฎ โฌ‡ MAP/CPP by using beta1 and alpha2 agonist
๐Ÿงฎ โฌ‡ intracap hydrostatic pressure via vasoconstrictive properties of thiopental and dihydroergotamine
๐Ÿงฎ Maintain colloid osmotic press by RBC/albumin
๐Ÿงฎ Euvolemia to slightly negative via diuresis
@NeurocritCareJ @ProvencioJavier @ESCMID 12/ This concept is certainly interesting but not well validated.
Back to the paper:
โ˜  ranged from 0-67%
ICP monitoring, in >1 study, was associated with better outcomes!
CSF diversion, whether #EVD or #LD was superior to conventional therapy
@NeurocritCareJ @ProvencioJavier @ESCMID 13/ Could this be a true signal and could monitoring help to improve outcomes and mortality? If so, could this be extended to non-invasive monitoring too? The authors did suggest a new algorithm based on their findings too:
@NeurocritCareJ @ProvencioJavier @ESCMID End/ What else did you learn from the paper? ๐ŸŽฉ off to the authors for their contribution to the field!
Let me know if you have any questions, corrections, suggestions, or if you have seen an article @neurocriticalcarej that you would like me to feature!

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