Computed Tomographic 3-Dimensional Virtual Dissection Aiding in Diagnosis and Surgical Planning of a Rare Form of Obstructed Supracardiac Total Anomalous Pulmonary Venous Connection With an Unusual Scimitar-Like Arrangement.

We present a case of a newborn with a rare presentation of obstructed supracardiac total anomalous pulmonary venous connection who required emergent cannulation to extracorporeal membrane oxygenation (ECMO). Computed tomographic angiography of the heart was performed and using novel virtual dissection techniques aided in surgical planning and guidance. Computed tomographic angiography can be successfully performed in neonates with complex congenital heart disease on ECMO without adjustment of flows to aid in surgical management and novel virtual dissection techniques aid in complex anatomical delineation and spatial orientation with noncardiac structures. The preoperative imaging in this case allowed for appropriate and detailed presurgical planning and contributed to the excellent outcome of this patient.

T Cell Response to Influenza Vaccination Remains Intact in Adults with Congenital Heart Disease Who Underwent Early Thymectomy.

Introduction: T cells developed in the thymus play a key role in vaccine immunity. Thymectomy occurs during infant congenital heart surgery and results in an altered T cell distribution. We investigated if adults with congenital heart disease (ACHD) who underwent early thymectomy have a diminished response to influenza vaccination. Methods: Blood samples from ACHD with early thymectomy ≤ 1 year of age (ACHD-ET; n = 12), no thymectomy (ACHD-NT; n = 8), and healthy controls (HC; n = 14) were collected prior to and 4 weeks after influenza vaccination. Flow cytometric analysis of T cell subsets and vaccine-specific cytokine expressing CD4+ T cells as well as hemagglutination inhibition (HI) assays were completed. Results: The mean age of the cohort was 34 ± 10.6 years and similar in all groups. The mean frequencies of naïve CD4+ and CD8+ T cells were lower in ACHD-ET than in HC (32.7% vs. 46.5%, p = 0.027 and 37.2% vs. 57.4%, p = 0.032, respectively). There was a rise in the frequency of memory CD4+ and CD8+ T cells in the ACHD-ET group. The ACHD-NT had no statistical difference from either group. The frequencies of influenza-specific memory CD4+ T cells expressing IFN-γ and TNF-α were increased after vaccination across all groups (p < 0.05). Conclusions: ACHD-ET have fewer naïve T cells, suggesting immunosenescence. Despite this, they show an adequate T Cell response to vaccination in young adulthood. Our findings support routine vaccination is effective in this population, but research into older ACHD is necessary.