Acute Mesenteric Ischemia in a Chronically Anticoagulated Patient With Atrial Fibrillation: Anticoagulation Reversal, Management and Preventing Recurrence.

Acute mesenteric ischemia (AMI) is caused by an interruption of the blood supply to the small intestine. Atrial fibrillation is a common cause of thromboembolic AMI. Patients taking direct oral anticoagulants (DOACs) for anticoagulation in atrial fibrillation are prone to anticoagulation failure and can present with thromboembolism. We present an interesting case of a 69-year-old female with a past medical history of chronic atrial fibrillation treated with a DOAC (apixaban) who was diagnosed with AMI despite being compliant with her anticoagulant. Her anticoagulation was promptly reversed and she was taken for urgent surgical intervention yielding a good outcome. Later, due to the failure of anticoagulation on apixaban her anticoagulant was changed to warfarin to prevent the recurrence of thromboembolism and follow-up showed she was doing well.