Severe Metabolic Acidosis with Cardiac Dysfunction

Diagnostic Considerations

The constellation of sudden-onset vomiting/diarrhea, profound shock unresponsive to vasopressors, severe metabolic acidosis with elevated lactate, dilated bowel loops on CT, and extreme IL-6 elevation is pathognomonic for Acute Mesenteric Ischemia (AMI) 1, 2
Non-occlusive mesenteric ischemia (NOMI) is particularly likely given normal coronaries on angiography and the clinical context of a young patient 1, 2
Severe metabolic acidosis and hyperkalemia result from bowel infarction and reperfusion injury 1, 2
The extreme cytokine storm (IL-6 >3000) reflects massive intestinal necrosis with bacterial translocation 2
Dilated bowel loops on CT, while non-specific, support this diagnosis in the appropriate clinical context 1

Diabetic Ketoacidosis (DKA) with complications is suggested by GRBS 250 with positive ketones, but the severity of shock, cardiac dysfunction, and hyperphosphatemia are atypical for DKA alone 3, 4
DKA typically shows hypophosphatemia initially, not severe hyperphosphatemia 3, 4

Prompt laparotomy is indicated if any signs of peritonitis develop or if clinical deterioration continues despite maximal support 2
Vasopressors should be used cautiously—dobutamine, low-dose dopamine, or milrinone are preferred over norepinephrine/epinephrine in suspected mesenteric ischemia 2
Bicarbonate therapy may be used judiciously for pH <7.1, though primary treatment is addressing underlying cause 3, 5

The combination of severe metabolic acidosis, refractory shock requiring ECMO/IABP, coagulopathy, and multi-organ failure carries extremely high mortality 1, 2
Survival depends on identifying and treating the underlying cause within hours 2
If AMI with bowel infarction is confirmed, extensive resection may be required with potential for short bowel syndrome 2