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Non-ECG-gated MDCTA of infracardiac total anomalous pulmonary venous connection in neonates and young infants

Nicht-EKG-getriggerte MDCTA bei infrakardialer totaler Lungenvenenfehlmündung von Neugeborenen und jungen Säuglingen

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Abstract

Objective

To compare the diagnostic accuracy of non-electrocardiogram-gated (non-ECG-gated) multidetector computed tomography angiography (MDCTA) with transthoracic echocardiography (TTE) in the evaluation of infracardiac total anomalous pulmonary venous connection (TAPVC) in neonate and infant patients.

Methods

Nine patients aged from 2 days to 3 months were included in this study. All clinical and imaging data were reviewed. Compared with findings from surgery, the diagnostic accuracy of MDCTA and TTE was calculated in three respects: the path of the drainage vein, the drainage site, and the stenosis of the vein.

Results

Images acquired from all patients were eligible for diagnosis and reconstruction. The sites of the drainage point were all clarified and the drainage vessels were oriented by axial and reconstructed images. Stenosis was found at 13 sites, including mild stenosis at the diaphragmatic level (n = 3), distortion or stenosis at the drainage site (n = 5), and hypogenesis of the pulmonary vein branch (n = 5). TTE misdiagnosed the upward-flowing collateral vessels as the drainage veins in 2 patients and misidentified the drainage site in 7 patients, yielding an accuracy of 77.8% and 22.9%, respectively. It identified stenosis at four sites at the drainage site in concordance with MDCTA. The hypogenesis of the pulmonary vein branch was not detected and the stenosis at the diaphragmatic level was not suggested by TTE.

Conclusion

For infracardiac TAPVC, non-ECG-gated MDCTA is superior to TTE and can facilitate the preoperative evaluation when combined with TTE.

Zusammenfassung

Ziel

Vergleich der diagnostischen Genauigkeit der nicht-Elektrokardiogramm(EKG)-getriggerten Multidetektor-Computertomographie-Angiographie (MDCTA) mit der transthorakalen Echokardiographie (TTE) zur Beurteilung einer infrakardialen totalen Lungenvenenfehlmündung (TAPVC) bei Neugeborenen und Säuglingen.

Methoden

In die Studie aufgenommen wurden 9 Patienten im Alter von 2 Tagen bis 3 Monaten. Sämtliche klinischen und bildgebenden Daten wurden geprüft. Im Vergleich mit den Operationsbefunden wurde die diagnostische Genauigkeit der MDCTA und der TTE in dreierlei Hinsicht bestimmt: Verlauf, Mündungsort und Stenose der Venen.

Ergebnisse

Für alle Patienten lagen bildgebende Daten für die Diagnose und Rekonstruktion vor. Die Mündungsstellen waren alle abgeklärt und die Lage der Gefäße war aus axialen und rekonstruierten Aufnahmen ersichtlich. Eine Stenose fand sich an 13 Stellen: leichte Stenose auf Höhe des Zwerchfells (n = 3), Verformung oder Stenose an der Mündungsstelle (n = 5) und Hypogenesie des Lungenvenenasts (n = 5). Mit der TTE kam es bei 2 Patienten zur Fehldiagnose der aufwärtsströmenden Kollateralgefäße als ableitende Venen und zur Fehlerkennung der Mündungsstelle bei 7 Patienten, was zu einer Genauigkeit von 77,8% bzw. 22,9% führte. In Übereinstimmung mit der MDCTA wurde eine Stenose an 4 Stellen im Bereich der Einmündung erkannt. Weder wurde die Hypogenesie des Lungenvenenasts mit der TEE erkannt, noch gab es damit einen Hinweis auf die Stenose in Höhe des Zwerchfells.

Schlussfolgerung

Bei infrakardialer TAPVC ist die nicht-EKG-getriggerte MDCTA der TEE überlegen und kann die präoperative Beurteilung in Kombination mit der TEE erleichtern.

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On behalf of all authors, the corresponding author states that there are no conflicts of interest.

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Correspondence to G. Huang.

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Qiong Yao and Xihong Hu contributed equally to this work.

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Yao, Q., Hu, X., Pa, M. et al. Non-ECG-gated MDCTA of infracardiac total anomalous pulmonary venous connection in neonates and young infants. Herz 38, 539–543 (2013). https://doi.org/10.1007/s00059-012-3728-4

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  • DOI: https://doi.org/10.1007/s00059-012-3728-4

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