A128 ACUTE GASTRIC VOLVULUS DISGUISED AS ACUTE CORONARY SYNDROME.

Abstract Background Acute gastric volvulus is a rare but potentially life-threatening condition that warrants emergent assessment. Its clinical presentation may encompass the Borchardt’s triad of vomiting, epigastric pain, and inability to insert a nasogastric tube. However, it can also present as chest pain and is often not cited within the typical differential diagnosis of non-cardiac causes of chest pain. We report the first known case of mesenterico-axial gastric volvulus presenting as acute coronary syndrome with a normal electrocardiogram, complete with radiographic and endoscopic images. Aims To present a case of acute gastric volvulus disguised as an acute coronary syndrome and describe its management. Methods Case report and review of literature. Results A 68 year-old female with history of recent coronary artery bypass graft surgery presented to hospital with sudden onset chest pain radiating to her left shoulder and jaw while having dinner. Initial high sensitivity troponin (normal <9ng/L) was 15ng/L, which increased to a modest peak at 115ng/L. ECG at presentation and through admission consistently showed normal sinus rhythm x 5. She was assessed by Cardiology and given her rising troponin and chest pain, she was treated as a non-ST elevation myocardial infarction with dual antiplatelet therapy. She underwent cardiac catheterization showing distal graft anastomotic site stenosis and was stented x2. Post procedure, her severe retrosternal chest pain recurred. GI was consulted for dysphagia and odynophagia, which was then noted to be present concurrent with her initial chest pain presentation. An urgent CT scan of the abdomen and pelvis revealed acute mesenterico-axial gastric volvulus (Figure 1A), a rarer form of gastric volvulus in the adult population compared to its organo-axial counterpart. After a failed nasogastric decompression, an emergent upper endoscopy was attempted and demonstrated mucosal necrosis (Figure 1B) but was unsuccessful in relieving the volvulus. The patient then underwent overnight surgery, which showed gastric volvulus with contained perforation and 50% necrosis of the stomach with sparing of the cardia and antrum. This resulted in a subtotal gastrectomy, hiatus hernia repair, pyloromyotomy, jejunostomy, and bilateral chest tube insertion. She then recovered in ICU before being successfully discharged home from hospital. Conclusions Acute gastric volvulus can present while disguised as more common causes of chest pain, such as acute coronary syndrome. Those who present with chest pain who also have a history of a large hiatal hernia, or an intrathoracic stomach should be evaluated with gastric volvulus in the differential diagnosis as its prompt management is critical to reduce morbidity and mortality. Funding Agencies None

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