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==Overview==
==Overview==
Surgery in [[mesenteric ischemia]] is performed to resect the [[Ischemic colitis|ischemic bowel]] in order to prevent the complications. However, in the case of acute [[Embolism|embolic]] type of [[mesenteric ischemia]], early [[laparotomy]] and surgical [[resection]] is the mainstay of treatment.


==Surgery==
==Surgery==
Surgical revascularisation remains the treatment of choice for mesenteric  ischaemia, but thrombolytic medical treatment and vascular interventional  radiological techniques have a growing role <ref name="pmid12816826">{{cite journal |author=Sreenarasimhaiah J |title=Diagnosis and management of intestinal ischaemic disorders |journal=BMJ |volume=326 |issue=7403 |pages=1372-6 |year=2003 |pmid=12816826 | doi=10.1136/bmj.326.7403.1372}}</ref>.
*The goals of surgical therapy are as follows:
**Re-establishment of blood supply to the [[Ischemia|ischemic]] bowel
**[[Resection]] of all non-viable areas of the bowel
**Preservation of the viable [[Intestine|bowel]]


==References==
*[[Intestine|Intestinal]] viability is defined as the maximum vital element influencing outcome in patients with AMI.
*Non-viable bowel, if unrecognized, can cause multi-organ failure and lead to death.
 
===Approach to treatment===
The treatment modality chosen for the patient depends on the type and the location of occlusion, along with hemodyanamic stability.
 
===Surgical versus endovascular intervention===
* In 2009, endovascular intervention was preferred over surgical approach.<ref name="pmid21236616">{{cite journal| author=Arthurs ZM, Titus J, Bannazadeh M, Eagleton MJ, Srivastava S, Sarac TP et al.| title=A comparison of endovascular revascularization with traditional therapy for the treatment of acute mesenteric ischemia. | journal=J Vasc Surg | year= 2011 | volume= 53 | issue= 3 | pages= 698-704; discussion 704-5 | pmid=21236616 | doi=10.1016/j.jvs.2010.09.049 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21236616 }}</ref><ref name="pmid23307340">{{cite journal| author=Björnsson S, Resch T, Acosta S| title=Symptomatic mesenteric atherosclerotic disease-lessons learned from the diagnostic workup. | journal=J Gastrointest Surg | year= 2013 | volume= 17 | issue= 5 | pages= 973-80 | pmid=23307340 | doi=10.1007/s11605-013-2139-z | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23307340  }} </ref><ref name="pmid22516890">{{cite journal| author=Sharafuddin MJ, Nicholson RM, Kresowik TF, Amin PB, Hoballah JJ, Sharp WJ| title=Endovascular recanalization of total occlusions of the mesenteric and celiac arteries. | journal=J Vasc Surg | year= 2012 | volume= 55 | issue= 6 | pages= 1674-81 | pmid=22516890 | doi=10.1016/j.jvs.2011.12.013 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22516890  }} </ref><ref name="pmid23885938">{{cite journal| author=Bobadilla JL| title=Mesenteric ischemia. | journal=Surg Clin North Am | year= 2013 | volume= 93 | issue= 4 | pages= 925-40, ix | pmid=23885938 | doi=10.1016/j.suc.2013.04.002 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23885938  }} </ref>
 
===Endovascular intervention===
* Hemodyanamically stable patients and those who do not have clinical or radiological signs of ischemia are preferred candidates for endovascular intervention.<ref name="pmid22503176">{{cite journal| author=Ryer EJ, Kalra M, Oderich GS, Duncan AA, Gloviczki P, Cha S et al.| title=Revascularization for acute mesenteric ischemia. | journal=J Vasc Surg | year= 2012 | volume= 55 | issue= 6 | pages= 1682-9 | pmid=22503176 | doi=10.1016/j.jvs.2011.12.017 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22503176  }} </ref><ref name="pmid19367243">{{cite journal| author=Kougias P, Huynh TT, Lin PH| title=Clinical outcomes of mesenteric artery stenting versus surgical revascularization in chronic mesenteric ischemia. | journal=Int Angiol | year= 2009 | volume= 28 | issue= 2 | pages= 132-7 | pmid=19367243 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19367243  }} </ref><ref name="pmid20620006">{{cite journal| author=Block TA, Acosta S, Björck M| title=Endovascular and open surgery for acute occlusion of the superior mesenteric artery. | journal=J Vasc Surg | year= 2010 | volume= 52 | issue= 4 | pages= 959-66 | pmid=20620006 | doi=10.1016/j.jvs.2010.05.084 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20620006  }} </ref><ref name="pmid19372025">{{cite journal| author=Schermerhorn ML, Giles KA, Hamdan AD, Wyers MC, Pomposelli FB| title=Mesenteric revascularization: management and outcomes in the United States, 1988-2006. | journal=J Vasc Surg | year= 2009 | volume= 50 | issue= 2 | pages= 341-348.e1 | pmid=19372025 | doi=10.1016/j.jvs.2009.03.004 | pmc=2716426 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19372025  }} </ref>
* Using endovascular intervention as the primary modality of treatment helps reduce complications, provides better outcome and shortens the length of hospital stay.<ref name="pmid18295100">{{cite journal| author=Sarac TP, Altinel O, Kashyap V, Bena J, Lyden S, Sruvastava S et al.| title=Endovascular treatment of stenotic and occluded visceral arteries for chronic mesenteric ischemia. | journal=J Vasc Surg | year= 2008 | volume= 47 | issue= 3 | pages= 485-491 | pmid=18295100 | doi=10.1016/j.jvs.2007.11.046 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18295100  }} </ref><ref name="pmid25757988">{{cite journal| author=Cai W, Li X, Shu C, Qiu J, Fang K, Li M et al.| title=Comparison of clinical outcomes of endovascular versus open revascularization for chronic mesenteric ischemia: a meta-analysis. | journal=Ann Vasc Surg | year= 2015 | volume= 29 | issue= 5 | pages= 934-40 | pmid=25757988 | doi=10.1016/j.avsg.2015.01.010 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25757988  }} </ref>
* Two types of endovascular interventions have been described:<ref name="pmid8087835">{{cite journal| author=McBride KD, Gaines PA| title=Thrombolysis of a partially occluding superior mesenteric artery thromboembolus by infusion of streptokinase. | journal=Cardiovasc Intervent Radiol | year= 1994 | volume= 17 | issue= 3 | pages= 164-6 | pmid=8087835 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8087835  }} </ref><ref name="pmid12828073">{{cite journal| author=Calin GA, Calin S, Ionescu R, Croitoru M, Diculescu M, Oproiu A| title=Successful local fibrinolytic treatment and balloon angioplasty in superior mesenteric arterial embolism: a case report and literature review. | journal=Hepatogastroenterology | year= 2003 | volume= 50 | issue= 51 | pages= 732-4 | pmid=12828073 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12828073  }} </ref>
(a)Pharmacomechanical thrombolysis
 
(b)Mesenteric angioplasty/stenting
 
'''(a)Pharmacomechanical thrombolysis''':
* It is performed in the following patients:
** Who can undergo arteriography within eight hours of the onset of abdominal pain
** No contraindications to fibrinolytic therapy
** No clinical signs of ischemia
* '''Procedure:'''
 
===Retrograde open mesenteric stenting===
 
===Revascularization===
* '''Embolectomy:'''
The conventional treatment offered for mesenteric embolism is embolectomy. It clears the thrombus and helps assess the bowel viability.
* '''Mesenteric bypass:'''
For mesenteric thrombosis, open surgical intervention is done followed by intraoperative retrograde superior mesenteric artery angiplasty and stenting for the        atherosclerotic plaques.
 
===Lapratomy and damage control:===
Lapratomy is performed once bowel infarction has occurred. It has the following indications and uses:
 
*Acute abdominal findings on physical exam consistent with peritonitis.
*Facilitates general abdominal exploration for gross pathology and other signs of visceral thrombosis.
*Allows to determine the viability of the bowel.
*Determines the extent and severity of intestinal ischemia.
*Assessment of arterial pulsations in the mesenteric vasculature and bleeding from cut surfaces.
 
Procedure:
*After preliminary [[Cardiopulmonary resuscitation|resuscitation]], midline [[laparotomy]] should be done to observe the areas of gut with choices for resection of all the [[Necrosis|necrotic]] areas. In instances of uncertainty, intraoperative [[Doppler echocardiography|Doppler]] can be beneficial.
 
===Postprocedural care and follow up:===
 
===Second-look lapratomy and abdominal wall closure:===
It is performed in patients who undergo revascularization for mesenteric ischemia for the following reasons:
* Reevaluate the bowel after 24-48 hours of initial operation
* Assessment of bowel viability after revascularization
* Resection of irreversibly ischemic bowel
* Significantly reduces the mortality after surgery
 
===Surgical procedure options:===
<ref name="pmid21810082">{{cite journal| author=Luo QZ, Lin L, Gong Z, Mei B, Xu YJ, Huo Z et al.| title=Positive association of major histocompatibility complex class I chain-related gene A polymorphism with leukemia susceptibility in the people of Han nationality of Southern China. | journal=Tissue Antigens | year= 2011 | volume= 78 | issue= 3 | pages= 178-84 | pmid=21810082 | doi=10.1111/j.1399-0039.2011.01748.x | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21810082  }} </ref><ref name="pmid18620112">{{cite journal| author=Lee RW, Bakken AM, Palchik E, Saad WE, Davies MG| title=Long-term outcomes of endoluminal therapy for chronic atherosclerotic occlusive mesenteric disease. | journal=Ann Vasc Surg | year= 2008 | volume= 22 | issue= 4 | pages= 541-6 | pmid=18620112 | doi=10.1016/j.avsg.2007.09.019 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18620112  }} </ref><ref name="pmid18295100">{{cite journal| author=Sarac TP, Altinel O, Kashyap V, Bena J, Lyden S, Sruvastava S et al.| title=Endovascular treatment of stenotic and occluded visceral arteries for chronic mesenteric ischemia. | journal=J Vasc Surg | year= 2008 | volume= 47 | issue= 3 | pages= 485-491 | pmid=18295100 | doi=10.1016/j.jvs.2007.11.046 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18295100  }} </ref>
* [[Balloon catheter|Balloon]] catheter [[embolectomy]] of the [[superior mesenteric artery]]
* For restoration of blood flow in acute mesenteric ischemia, antegrade aorto-mesenteric bypass from supraceliac aorta is the best choice.
* Percutaneous transluminal angioplasty is also considered for revascularization in some case reports.
* A new hybrid endovascular-surgical technique for managing mesenteric ischemia has been proposed.
* Laprotomy is done when transmural bowel infarction has occurred.
 
===Treatment strategy of acute embolic mesenteric ischemia:===
Treatment for acute embolic mesenteric ischemia is mainly surgical and is managed according to the hemodyanamic stability or the presence/absence of [[Peritoneum|peritoneal]] signs.                                     


{{Reflist|2}}
{{familytree/start}}
{{familytree | | | | | | | | | | A01 | | | | | |A01=Embolic mesenteric arterial occlusion}}
{{familytree | | | | | | | | | | |!| | | | | | | | }}
{{familytree | | | | | | | | | | A02 | | | | | |A02= Anticoagulation with heparin
  Pain management}}
{{familytree | | | | | | | | | | |!| | | | | | | | }}
{{familytree | | | | | | | | | | A02 | | | | | |A02= Peritoneal signs}}
{{familytree | | | | | | | | | | |!| | | | | | | | }}
{{familytree | | | | | |,|-|-|-|-|^|-|-|-|-|-|.| | | }}
{{familytree | | | | | B01 | | | | | | | | | B02 |B01= Yes|B02= No}}
{{familytree | | | | | | | | | | | | | | | | |!| | | }}
{{familytree | | | | | | | | | | | | | | | | C02 | | | C01=|C02= Computed tomographic angiography }}
{{familytree | | | | | | | | | | | | | | | | |!| | | | |}}
{{familytree | | | | | | | | | | | | | | | | D01 | | | |D01= Embolus present}}
{{familytree | | | | | | | | | | | | | | | | |!| | | | | |}}
{{familytree | | | | | | | | | | | | | | | | E01 | | | | |E01= Thrombolysis}}
{{familytree | | | | | | | | | | | | | | | | |!| | | | | | }}
{{familytree | | | | | | | | | | | | | | | | E01 | | | | |E01= Repeat imaging
Resolution of thrombus and no persistent symptoms }}
{{familytree | | | | | | | | | | | | | | | | |!| | | | | | }}
{{familytree | | | | | | | | | | |,|-|-|-|-|-|^|-|-|-|-|-|.| | | }}
{{familytree | | | | | | | | | | B01 | | | | | | | | | | B03 | | |B01= No|B02=B02|B03=Yes}}
{{familytree | | | | | | | | | | |!| | | | | | | | | | | |!| | | | }}
{{familytree | | | | | | | | | | |!| | | | | | | | | | | C03 | | |C03=Observe}}
{{familytree | | | | | | | | | | |!| | | | | | | | | | | |!| | | | }}
{{familytree | | | | | | | | | | |!| | | | | | | | | | | D01 | | |D01=Signs of non-viable bowel}}
{{familytree | | | | | | | | | | |!| | | | | | | | | | | |!| | | | }}
{{familytree | | | | | | | | | | |!| | | | | | |,|-|-|-|-|^|-|-|-|-|-|.| | }}
{{familytree | | | | | | | | | | |!| | | | | | B01 | | | | | | | | | B02 | |B01=Yes|B02=No}}
{{familytree | | | | | | | | | | |!| | | | | | |!| | | | | | | | | | |!| | |}}
{{familytree | | | | | | | | | | |`|-|-|v|-|-|-|'| | | | | | | | | | C01 | | |C01=Initiate oral diet}}
{{familytree | | | | | | | | | | | | | |!| | | | | | | | | | | | | | |!| | | | }}
{{familytree | | | | | | | | | | | | | B01 | | | | | | | | | | | | | |!| | | |B01=Exploration and open surgical embolectomy }}
{{familytree | | | | | | | | | | | | | |!| | | | | | | | | | | | | | |!| | | | |}}
{{familytree | | | | | | | | |,|-|-|-|-|^|-|-|-|-|.| | | | | | | | | |!| | | | | |}}
{{Familytree | | | | | | | | A01 | | | | | | | | A02 | | | | | | | | A03 | | | | |A01=Non-viable bowel|A02=Surgical revascularization for unsuccessful embolectomy|A03=A03}}
{{familytree | | | |,|-|-|-|-|^|-|-|-|-|.| | | | | | | | | }}
{{familytree | | | |!| | | | | | | | | |!| | | | | | | | |}}
{{familytree | | | B01 | | | | | | | | B02 | | | | | | | |B01=No|B02=Yes}}
{{familytree | | | |!| | | | | | | | | |!| | | | | | | |}}
{{familytree | | | C01 | | | | | | | | C02 | | | | | | | |C01=Temporary abdominal closure|C02=Bowel resection}}
{{familytree | | | |!| | | | | | | | | | | | | | | }}
{{familytree | | | D01 | | | | | | | | | | | |D01=Second look lapratomy}}
{{familytree | | | |!| | | | | | | | | | | | |}}
{{familytree | | | E01 | | | | | | | | | | |E01=No additional resection}}
{{familytree | | | |!| | | | | | | | |}}
{{familytree | | | D01 | | | | | | | | |D01=Delayed abdominal closure}}
{{familytree/end}}


[[Category:Needs content]]
==References==
<references />
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Latest revision as of 12:50, 14 April 2021

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Feham Tariq, MD [2]

Overview

Surgery in mesenteric ischemia is performed to resect the ischemic bowel in order to prevent the complications. However, in the case of acute embolic type of mesenteric ischemia, early laparotomy and surgical resection is the mainstay of treatment.

Surgery

  • The goals of surgical therapy are as follows:
    • Re-establishment of blood supply to the ischemic bowel
    • Resection of all non-viable areas of the bowel
    • Preservation of the viable bowel
  • Intestinal viability is defined as the maximum vital element influencing outcome in patients with AMI.
  • Non-viable bowel, if unrecognized, can cause multi-organ failure and lead to death.

Approach to treatment

The treatment modality chosen for the patient depends on the type and the location of occlusion, along with hemodyanamic stability.

Surgical versus endovascular intervention

  • In 2009, endovascular intervention was preferred over surgical approach.[1][2][3][4]

Endovascular intervention

  • Hemodyanamically stable patients and those who do not have clinical or radiological signs of ischemia are preferred candidates for endovascular intervention.[5][6][7][8]
  • Using endovascular intervention as the primary modality of treatment helps reduce complications, provides better outcome and shortens the length of hospital stay.[9][10]
  • Two types of endovascular interventions have been described:[11][12]

(a)Pharmacomechanical thrombolysis

(b)Mesenteric angioplasty/stenting

(a)Pharmacomechanical thrombolysis:

  • It is performed in the following patients:
    • Who can undergo arteriography within eight hours of the onset of abdominal pain
    • No contraindications to fibrinolytic therapy
    • No clinical signs of ischemia
  • Procedure:

Retrograde open mesenteric stenting

Revascularization

  • Embolectomy:

The conventional treatment offered for mesenteric embolism is embolectomy. It clears the thrombus and helps assess the bowel viability.

  • Mesenteric bypass:

For mesenteric thrombosis, open surgical intervention is done followed by intraoperative retrograde superior mesenteric artery angiplasty and stenting for the atherosclerotic plaques.

Lapratomy and damage control:

Lapratomy is performed once bowel infarction has occurred. It has the following indications and uses:

  • Acute abdominal findings on physical exam consistent with peritonitis.
  • Facilitates general abdominal exploration for gross pathology and other signs of visceral thrombosis.
  • Allows to determine the viability of the bowel.
  • Determines the extent and severity of intestinal ischemia.
  • Assessment of arterial pulsations in the mesenteric vasculature and bleeding from cut surfaces.

Procedure:

  • After preliminary resuscitation, midline laparotomy should be done to observe the areas of gut with choices for resection of all the necrotic areas. In instances of uncertainty, intraoperative Doppler can be beneficial.

Postprocedural care and follow up:

Second-look lapratomy and abdominal wall closure:

It is performed in patients who undergo revascularization for mesenteric ischemia for the following reasons:

  • Reevaluate the bowel after 24-48 hours of initial operation
  • Assessment of bowel viability after revascularization
  • Resection of irreversibly ischemic bowel
  • Significantly reduces the mortality after surgery

Surgical procedure options:

[13][14][9]

  • Balloon catheter embolectomy of the superior mesenteric artery
  • For restoration of blood flow in acute mesenteric ischemia, antegrade aorto-mesenteric bypass from supraceliac aorta is the best choice.
  • Percutaneous transluminal angioplasty is also considered for revascularization in some case reports.
  • A new hybrid endovascular-surgical technique for managing mesenteric ischemia has been proposed.
  • Laprotomy is done when transmural bowel infarction has occurred.

Treatment strategy of acute embolic mesenteric ischemia:

Treatment for acute embolic mesenteric ischemia is mainly surgical and is managed according to the hemodyanamic stability or the presence/absence of peritoneal signs.

 
 
 
 
 
 
 
 
 
Embolic mesenteric arterial occlusion
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Anticoagulation with heparin Pain management
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Peritoneal signs
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Yes
 
 
 
 
 
 
 
 
No
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Computed tomographic angiography
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Embolus present
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Thrombolysis
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Repeat imaging Resolution of thrombus and no persistent symptoms
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
No
 
 
 
 
 
 
 
 
 
Yes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Observe
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Signs of non-viable bowel
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Yes
 
 
 
 
 
 
 
 
No
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Initiate oral diet
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exploration and open surgical embolectomy
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Non-viable bowel
 
 
 
 
 
 
 
Surgical revascularization for unsuccessful embolectomy
 
 
 
 
 
 
 
A03
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
No
 
 
 
 
 
 
 
Yes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Temporary abdominal closure
 
 
 
 
 
 
 
Bowel resection
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Second look lapratomy
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
No additional resection
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Delayed abdominal closure
 
 
 
 
 
 
 
 

References

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