Mesenteric Ischemia in Emergency Medicine Treatment & Management
- Author: Daniel K Nishijima, MD; Chief Editor: David FM Brown, MD more...
Prehospital Care
- Cardiac monitor, intravenous access, oxygen
- May require intravenous fluid resuscitation
Emergency Department Care
- Resuscitation
- Resuscitation is often needed because patients with mesenteric ischemia are usually very toxic or rapidly become toxic.
- Early intubation in unstable patients may improve oxygenation and allow for more aggressive fluid resuscitation.
- Parenteral opioid analgesics
- Parenteral broad-spectrum antibiotics
- All cases of mesenteric ischemia with signs of peritonitis, regardless of the etiology, generally require immediate surgical intervention for the resection of ischemic or necrotic intestines.
- Intra-arterial papaverine during angiography can be used regardless of the etiology of the intestinal ischemia. Papaverine is an opium derivative that functions as a phosphodiesterase inhibitor, which acts to relax vascular smooth muscle. It is usually infused directly into the superior mesenteric artery (SMA), thus improving intestinal blood flow.
- Definitive treatment is generally withheld by the EP until an etiology is determined. In cases of mesenteric ischemia, time is of the utmost essence. Treatment options depend on the etiology of intestinal ischemia as well as the hemodynamic stability of the patient.
- Definitive treatment
- For acute arterial embolus, options include papaverine infusion, surgical embolectomy, and intra-arterial thrombolysis.
- For acute arterial thrombosis, options include papaverine infusion and arterial reconstruction either through aortosuperior mesenteric arterial bypass grafting or reimplantation of the SMA to the aorta.[46]
- For nonocclusive mesenteric ischemia, papaverine infusion is the mainstay of treatment. Papaverine has been shown to decrease mortality in nonocclusive mesenteric ischemia from 70-90% to 0-55% in a few small studies.[12, 32, 47]
- For mesenteric venous thrombosis, anticoagulation with heparin/warfarin either alone or in combination with surgery. Immediate heparinization should be started even when surgical intervention is indicated, as it decreases progression of thrombosis and improves survival.[38, 19, 48, 33, 49]
- For chronic mesenteric ischemia, management options include angioplasty with or without stent placement or surgical revascularization. Several studies have found a high rate of success with percutaneous stent revascularization for chronic mesenteric ischemia, although repeated interventions may be necessary.[50, 51, 52]
Consultations
- Vascular surgery - Given the need for early diagnosis and treatment, the EP should obtain surgical consultation as soon as the diagnosis is considered.
- Interventional radiology - Angiography and adjunctive treatment
- Intensivist - Patients diagnosed with mesenteric ischemia are often hemodynamically unstable or have a high probability to progress to instability, so most patients require hospitalization in an intensive care unit.
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