Overview
Aortic sinus-cardiac chamber fistulas are rare congenital anomalies characterized by abnormal connections between the aortic sinuses and cardiac chambers, often presenting with hemodynamic instability and requiring surgical intervention 1.Diagnosis
Symptoms: Typically symptomatic, often including dyspnea, chest pain, and signs of heart failure 1.
Diagnostic Tests: Angiographic evaluation is standard; echocardiography (two-dimensional) has been increasingly used for diagnosis 1.
Localization: Fistula origin predominantly from the right aortic sinus (22/23 cases) with involvement of the right ventricle most commonly (18/23 cases) 1.Management
Surgical Repair: Open surgery involving both the aorta and the affected cardiac chamber is indicated; repair using teflon felt patches on both ends is recommended 1.
Cardioplegic Arrest: Use of cardioplegic arrest during surgery may improve outcomes, as evidenced by lower mortality in cases where it was employed 1.
Mortality: Historical mortality rate of 13%, with earlier cases having higher mortality likely due to lack of cardioplegic arrest 1.Special Populations
No Specific Data: The provided abstracts do not cover special populations such as pregnancy, pediatrics, elderly, or specific comorbidities 1.Key Recommendations
Surgical Intervention: Repair aortic sinus-cardiac chamber fistulas surgically using teflon felt patches on both ends of the fistula (Evidence: Strong 1).
Use of Cardioplegic Arrest: Employ cardioplegic arrest during surgical repair to potentially reduce mortality (Evidence: Moderate 1).
Preoperative Angiographic Evaluation: Conduct angiographic evaluation before surgery to accurately localize the fistula (Evidence: Expert opinion 1).References
1 Babacan KM, Tasdemir O, Zengin M, Karagöz HY, Zorlutuna YI, Ozer C et al.. Fistulous communication of aortic sinuses into the cardiac chambers. Fifteen years surgical experience and a report of 23 patients. Japanese heart journal 1986. link