A rare case report of dextrocardia combined with atrial fibrillation and ischemic bowel disease.

RATIONALE: This report describes a rare case of dextrocardia concurrent with atrial fibrillation (AF) and ischemic bowel disease, to inform clinical management of such complex comorbidities.

PATIENT CONCERNS: A 70-year-old male presented with hematochezia, left lower abdominal pain, and AF confirmed by electrocardiogram.

DIAGNOSES: Dextrocardia (complete transposition of great vessels), AF with atrial enlargement and left ventricular dysfunction, and colonic ischemic bowel disease (mucosal edema/ulceration) were confirmed.

INTERVENTIONS: Conservative therapy was given, including vasodilators, fluid resuscitation, anticoagulants, cardiac rate control, and antibiotics.

OUTCOMES: Symptoms improved significantly posttreatment: abdominal pain resolved, stool color normalized, and cardiac status stabilized.

LESSONS: Comprehensive diagnosis and regular follow-up are essential for dextrocardia patients. Targeted intervention improves prognosis in complex comorbid cases.