Subdural empyema surgery: Difference between revisions

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{{Subdural empyema}}
{{Subdural empyema}}
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{{CMG}} {{AE}} {{JS}}; {{AG}}


==Overview==
==Overview==
[[Subdural empyema]], also referred to as ''subdural abscess'', ''pachymeningitis interna'' and ''circumscript meningitis'', is a life-threatening infection, first reported in literature approximately 100 years ago.<ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref> It consists of a localised collection of [[purulent]] material, usually unilateral, between the [[dura mater]] and the[[arachnoid mater]]. It accounts for about 15-22% of the reported focal intracranial [[infections]]. The empyema may develop intracranially (about 95%) or in the [[spinal canal]] (about 5%), and in both cases, it constitutes a [[Medical emergency|medical]] and [[Surgical emergency|neurosurgical emergency]].<ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= |pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref>
Subdural empyema is a [[neurosurgery|neurosurgical]] condition, which requires emergency surgical drainage and subsequent medical therapy. In order to evacuate the pus, [[burr hole]] placement or [[craniotomy]] may be used to treat the subdural empyema. The preferred surgical mainstay of treatment for subdural empyema is [[craniotomy]]. A wide craniotomy allows a wide exposure of the area, adequate exploration, and better evacuation of the infected material and decompression of the underlying cerebral hemisphere, thereby improving the outcome.<ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref><ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref>
Since the clinical symptoms might be mild and unspecific initially, the rapid diagnosis and treatment are crucial. The sooner the proper treatment is initiated, the better the recovery will be. The treatment, for almost all causes, requires prompt [[surgical]] drainage and [[antibiotic]] therapy.<ref name="pmid12521560">{{cite journal|author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi=|pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref> With treatment, resolution of the [[empyema]] occurs from the dural side, and, if it is complete, a thickened [[dura mater|dura]] may be the only residual finding.
With treatment, including surgical drainage, resolution of the empyema occurs from the dural side, and, if it is complete, a thickened dura may be the only residual finding.


==Surgical Treatment==
==Surgery==
Except in its mildest stages, or in the presence of contraindications, subdural empyema is a neurosurgical condition, which requires emergency surgical drainage and medical therapy. Early diagnosis, appropriate surgical drainage and adequate antibiotic therapy are the key to a favourable outcome. Following the surgical procedure, the pus from the empyema should be sent for aerobe and anaerobic cultures, in order to determine the most adequate antibiotic therapy. Except in rare situations, where the is contraindication for surgery, or the mortality risk is greater, subdural empyema should always be treated surgically. Other concomitant situations, such as [[sinusitis]], [[otitis]] and [[mastoiditis]], may also require surgical intervention<ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref><ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref>
Subdural empyema is a [[neurosurgery|neurosurgical]] condition, which requires emergency surgical drainage and subsequent medical therapy. Early diagnosis, appropriate surgical drainage and adequate antibiotic therapy are the key to a favorable outcome. Following the surgical procedure, the pus from the empyema should be sent for [[aerobic]] and [[anaerobic]] cultures, in order to determine the most adequate antimicrobial therapy. Except in rare situations, where there are contraindications for surgery, or the mortality risk is greater, subdural empyema should nearly always be treated surgically. Other concomitant situations, such as [[sinusitis]], [[otitis]], and [[mastoiditis]], may also require surgical intervention.<ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref><ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref>


There are two surgical procedures, that aim to evacuate completely the pus from the empyema:
In order to evacuate the pus, there are two surgical procedures used in the treatment of subdural empyema:
*[[Burr hole]] placement
*[[Craniotomy]]


===Burr hole placement===
===Burr hole placement===
In the [[burr hole]] placement technique, a previous imaging study accurately localizes the collection of [[pus]] to be evacuated. It is associated with a higher rate of recurrence of the empyema, compared to the [[craniotomy]] procedure.
Generally, [[burr hole]] placement is performed in [[septic]] patients with confirmed parafalcine empyemas, or when the patient is considered too frail to undergo the [[craniotomy]].<ref name="Hendaus2013">{{cite journal|last1=Hendaus|first1=Mohammed A.|title=Subdural Empyema in Children|journal=Global Journal of Health Science|volume=5|issue=6|year=2013|issn=1916-9744|doi=10.5539/gjhs.v5n6p54}}</ref> In the [[burr hole]] placement technique, a previous imaging study accurately localizes the collection of [[pus]] to be evacuated. It is associated with a higher rate of recurrence of the empyema, compared to the [[craniotomy]] procedure, and may also lead to secondary injury of the cortex, possibly exacerbating the infection.<ref name="Hendaus2013">{{cite journal|last1=Hendaus|first1=Mohammed A.|title=Subdural Empyema in Children|journal=Global Journal of Health Science|volume=5|issue=6|year=2013|issn=1916-9744|doi=10.5539/gjhs.v5n6p54}}</ref><ref name="pmid11564248">{{cite journal| author=Nathoo N, Nadvi SS, Gouws E, van Dellen JR| title=Craniotomy improves outcomes for cranial subdural empyemas: computed tomography-era experience with 699 patients. | journal=Neurosurgery | year= 2001 | volume= 49 | issue= 4 | pages= 872-7; discussion 877-8 | pmid=11564248 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11564248  }} </ref>


===Craniotomy===
===Craniotomy===
A wide [[craniotomy]] with irrigation is the surgical procedure of choice, since it allows a wide exposure of the area, adequate exploration, better evacuation of the infected material and decompression of the underlying cerebral hemisphere, thereby improving the outcome. <ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref><ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref>
The preferred surgical mainstay of treatment for subdural empyema is [[craniotomy]]. A wide craniotomy allows a wide exposure of the area, adequate exploration, and better evacuation of the infected material and decompression of the underlying cerebral hemisphere, thereby improving the outcome.<ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref><ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref> A possible complication of [[craniotomy]] is the higher probability of damage to the [[bridging veins]] during the procedure. The following video demonstrates evacuation of pus from subdural empyema via craniotomy:<ref name=YouTube> Subdural Empyema. YouTube Channel - Neurosurgery (2013). https://www.youtube.com/watch?v=-DziqU6wnz8 Accessed on December 7, 2015.</ref>
[[Craniotomy]] is also the indicated surgical procedure in the presence of large or multiloculated [[infections]] and empyemas refractory to drainage by [[burr hole]] or stereotactic aspiration. <ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560  }} </ref> A possible complication from craniotomy is the higher probability of damage to the bridging veins during the procedure.
 
 
'''Below is a video demonstrating a clinical case in which surgery was part of the treatment'''


{{#ev:youtube|-DziqU6wnz8}}
{{#ev:youtube|-DziqU6wnz8}}
'''Video curtesy of''' '''''Neurosurgery (youtube)'''''


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
[[Category:Needs content]]
[[Category:Infectious disease]]
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Latest revision as of 18:53, 18 September 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]; Anthony Gallo, B.S. [3]

Overview

Subdural empyema is a neurosurgical condition, which requires emergency surgical drainage and subsequent medical therapy. In order to evacuate the pus, burr hole placement or craniotomy may be used to treat the subdural empyema. The preferred surgical mainstay of treatment for subdural empyema is craniotomy. A wide craniotomy allows a wide exposure of the area, adequate exploration, and better evacuation of the infected material and decompression of the underlying cerebral hemisphere, thereby improving the outcome.[1][2]

Surgery

Subdural empyema is a neurosurgical condition, which requires emergency surgical drainage and subsequent medical therapy. Early diagnosis, appropriate surgical drainage and adequate antibiotic therapy are the key to a favorable outcome. Following the surgical procedure, the pus from the empyema should be sent for aerobic and anaerobic cultures, in order to determine the most adequate antimicrobial therapy. Except in rare situations, where there are contraindications for surgery, or the mortality risk is greater, subdural empyema should nearly always be treated surgically. Other concomitant situations, such as sinusitis, otitis, and mastoiditis, may also require surgical intervention.[1][2]

In order to evacuate the pus, there are two surgical procedures used in the treatment of subdural empyema:

Burr hole placement

Generally, burr hole placement is performed in septic patients with confirmed parafalcine empyemas, or when the patient is considered too frail to undergo the craniotomy.[3] In the burr hole placement technique, a previous imaging study accurately localizes the collection of pus to be evacuated. It is associated with a higher rate of recurrence of the empyema, compared to the craniotomy procedure, and may also lead to secondary injury of the cortex, possibly exacerbating the infection.[3][4]

Craniotomy

The preferred surgical mainstay of treatment for subdural empyema is craniotomy. A wide craniotomy allows a wide exposure of the area, adequate exploration, and better evacuation of the infected material and decompression of the underlying cerebral hemisphere, thereby improving the outcome.[1][2] A possible complication of craniotomy is the higher probability of damage to the bridging veins during the procedure. The following video demonstrates evacuation of pus from subdural empyema via craniotomy:[5]

{{#ev:youtube|-DziqU6wnz8}}

References

  1. 1.0 1.1 1.2 Agrawal, Amit; Timothy, Jake; Pandit, Lekha; Shetty, Lathika; Shetty, J.P. (2007). "A Review of Subdural Empyema and Its Management". Infectious Diseases in Clinical Practice. 15 (3): 149–153. doi:10.1097/01.idc.0000269905.67284.c7. ISSN 1056-9103.
  2. 2.0 2.1 2.2 Greenlee JE (2003). "Subdural Empyema". Curr Treat Options Neurol. 5 (1): 13–22. PMID 12521560.
  3. 3.0 3.1 Hendaus, Mohammed A. (2013). "Subdural Empyema in Children". Global Journal of Health Science. 5 (6). doi:10.5539/gjhs.v5n6p54. ISSN 1916-9744.
  4. Nathoo N, Nadvi SS, Gouws E, van Dellen JR (2001). "Craniotomy improves outcomes for cranial subdural empyemas: computed tomography-era experience with 699 patients". Neurosurgery. 49 (4): 872–7, discussion 877-8. PMID 11564248.
  5. Subdural Empyema. YouTube Channel - Neurosurgery (2013). https://www.youtube.com/watch?v=-DziqU6wnz8 Accessed on December 7, 2015.