Aorto-right atrial fistulas are lesions that result in heart failure if they are untreated. They result from rupture of congenital or acquired aortic aneurysms into the right atrium.We report an unusual case of fistula from aneurysmal right sinus of Valsalva to the right atrium discovered after a non-penetrating trauma and treated surgically.
Case PresentationA 37 year-old-man, with no past medical history, was a victim of a closed chest trauma by falling in a hole whose depth was 20 meters. He was admitted to the emergency department with stable vital signs. He had mandibular fractures. Cerebral CT scan showed no anomalies. Systolic blood pressure was 131 mm Hg, diastolic blood pressure was 40 mm Hg. The patient had dyspnea. There was an ecchymosis on the chest wall. A thrill was appreciated over the precordium.Heart auscultation revealed a continuous murmur on the aortic site. A chest roentgenogram revealed an increased cardiac silhouette with bilateral alveolar opacities. There was a sinus tachycardia on the electrocardiogram, without ischemic signs or conduction disorders. A two-dimensional echocardiography revealed an important left to right shunt with a continuous flow from the aorta to the right atrium, with an aneurysm of the right sinus of Valsalva. The aneurysm was next to the right coronary artery. The aortic valve was without anomalies, and the right heart chambers were dilated. The echocardiography showed no other congenital heart diseases.Thoracic CT scan detected a bilateral pulmonary edema with a mild pleural effusion. So, the patient underwent emergent surgical repair. A median sternotomy was performed. The pericardium was opened. A continuous thrill along the aorta was palpated.Cardiopulmonary bypass was established between the aorta and two vena cavae. The intra-operative examination didn't find any hematoma around the sinus of Valsalva which was dilated. A fistula between the right sinus of Valsalva and the right atrium at the level of the right coronary artery was observed through a transverse aortotomy. This defect had 2 cm of diameter. There was no injury of the aortic valve. The defect was closed with a synthetic patch sutured with pledgeted sutures from inside the right coronary sinus at the level of the right coronary artery into the atrial wall (Figure 1).After surgery, the patient's recovery was uneventful and the patient was discharged on the fifth postoperative day. The patient remains asymptomatic and without murmurs 2 months after the surgery.
DiscussionAneurysmal dilatation of the sinus of Valsalva is a cardiac anomaly caused by infective endocarditis, syphilitic aortitis, atherosclerosis, connective tissue disease or as a congenital abnormality discovered incidentally [1,2].Rupture of sinus of Valsalva aneurysm into the cardiac chambers is a complication which predominantly affects males [3,4]. When In this case report, we describe a case of a ruptured aneurysm of the sinus of Valsalva ruptured into the right atrium discovered incidentally after a non-penetrating chest trauma in...