IJCS | Volume 33, Nº1, January / February 2019

105 Figure 2 - A: Pulmonary valve, ostium of the left pulmonary artery (below) and ostium of the right pulmonary artery (above). 1. Pulmonary valve. 2. Ostium of the left pulmonary artery. 3. Ostium of the right pulmonary artery. 4. Ductus arteriosus. 5. Descending thoracic aorta. B: Aortic valve and single coronary artery ostium. 1. Aortic valve. 2. Single coronary artery ostium. 3. Complete atrioventricular septal defect with common atrioventricular valve Ponce Complete interruption of aortic arch Int J Cardiovasc Sci. 2020;33(1):102-106 Case Report reported case, we hypothesized that the combination of chorioamnionitis and placental infarction with reduced oxygenation, pertinent to the IAA, may have caused anemia, hidrops, and intrauterus heart failure that culminated in fetal death. Failure to perform the fetal karyotype analysis was a limitation of the reported case. An important echocardiographic finding in the prenatal diagnosis of IAA is the size discrepancy between the large arteries, with the aortic artery being much smaller in diameter than the main pulmonary artery. In all these cases, it is important to check the continuity of the aortic arch. 6 This difference in diameter between the great vessels was readily observed in the autopsy of the case described, but fetal echocardiography was not performed. This case is particularly interesting because it emphasizes the importance of a detailed diagnostic investigation in suspicion of fetal hydrops in gestational ultrasound. Although cases of IAA are rare, this entity should be considered as a possible cause of fetal hydrops. Author contributions Conception and design of the research: Ponce C. Acquisition of data: Ponce C. Analysis and interpretation of the data: Ponce C. Statistical analysis: Ponce C. Obtaining financing: Ponce C. Writing of the manuscript: Ponce C. Critical revision of the manuscript for intellectual content: Ponce C. Supervision / as the major investigador: Ponce C.