P4645Prevalence of interatrial communications in 7,000 newborns from a large, prospective population study
Notice bibliographique
Résumé
Abstract Introduction The prevalence of any interatrial communication (IAC) (patent foramen ovale (PFO) or atrial septal defect (ASD)) in newborns has previously been reported to be between 24% and 92%. However, previous studies were relatively small, and no universal classification of IACs exists. We proposed a new echocardiographic diagnostic algorithm developed in collaboration with a group of international experts to classify IACs based on echocardiographic findings on subxiphoid transthoracic echocardiographic (TTE) images of the atrial septum in unselected newborns. Purpose To determine the prevalence of IACs (PFO and ASD) in newborns based on the new diagnostic algorithm. Method Echocardiograms of newborns (age 0–30 days) consecutively included in a large, prospective population study (n=25,000) were analyzed using the new algorithm. The algorithm classifies IACs into PFO and ASD based on transthoracic echocardiographic (TTE) findings including size and number of the communication(s) as well as the morphology and structure of the atrial septum, taking the normal fetal development into consideration. An IAC was classified as a PFO when either there was only one communication located in the upper 2/3 of the atrial septum with a visible communication having a diameter of ≤3.4 mm or a channel-like structure; or there was no visible communication on 2D but acceleration of colour Doppler flow crossing the septum was documented. An IAC was classified as an ASD if the diameter of a visible communication was >3.4 mm, or the communication was located in the lower 1/3 part of the atrial septum, or more than one communication was present. No visible communication on 2D and no flow acceleration despite possible colour Doppler flow crossing the atrial septum was classified as an absence of IAC. Preliminary results As of 3 February 2019, 9,028 echocardiograms have been analyzed. A total of 2,026 (22.4%) were excluded due to poor image quality of the atrial septum. Of the 7,002 included echocardiograms, an IAC was detected on the TTE images in 85.9% of the newborns (median age 12 days [IQR 8; 15], 47.9% females). According to the algorithm 78.7% of the newborns were classified as having a PFO (see Table 1) whereas 7.2% were classified as having an ASD. Table 1. Prevalence of interatrial communications in newborns aged 0–30 days Type of interatrial communication: Prevalence (n=7,002): Patent foramen ovale 78.7% Atrial septal defect 7.2% No interatrial communication 14.1% Conclusion An IAC was present in the vast majority of newborns aged 0–30 days. PFOs were 11 times more frequent than ASDs. Acknowledgement/Funding Danish Heart Association, Danish Children's Heart Foundation, Candy's Found., Toyota Found., Herlev-Gentofte Hospital Research Found., Gangsted Found.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,002 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».