Introduction: The measurement of nuchal translucency (NT) is crucial for assessing risk of aneuploidies in the first trimester. We investigate the ability of NT assessed by a transverse view of the fetal head to detect fetuses at increased risk of common aneuploidies at 11–13 weeks of gestation. Methods: We enrolled a nonconsecutive series of women who attended our outpatient clinic from January 2020 to April 2021 for aneuploidy screening by means of a first trimester combined test. All women were examined by operators certified by the Fetal Medicine Foundation. In each patient, NT measurements were obtained both from the median sagittal view and transverse view. We calculated the risk of aneuploidy using NT measurements obtained both with sagittal and axial scans, and then we compared the results. Results: A total of 1,023 women were enrolled. An excellent correlation was found between sagittal and transverse NT measurements. The sensitivity and specificity of the axial scan to identify fetuses that were deemed at risk of trisomy 21 using standard sagittal scans were 40/40 = 100.0% (95% confidence interval [CI]: 91.2–100.0) and 977/ 983 = 99.4% (95% CI: 98.7–99.7), respectively. The sensitivity and specificity of the axial scan to identify fetuses at risk of trisomy 13 or 18 were 16/16 = 100.0% (95% CI: 80.6–100.0) and 1,005/1,007 = 99.8% (95% CI: 99.3–99.9). Conclusions: When the sonogram, a part of combined test screening, is performed by an expert sonologist, axial views can reliably identify fetuses at increased risk of trisomies without an increase in false negative results.

Identification of Fetuses at Increased Risk of Trisomies in the First Trimester Using Axial Planes / Montaguti, Elisa; Diglio, Josefina; Petrachi, Benedetta; Arosio, Viola; Fiorentini, Marta; Cavalera, Marta; Pellegrino, Anita; Amodeo, Silvia; Lenzi, Jacopo; Pilu, Gianluigi. - In: FETAL DIAGNOSIS AND THERAPY. - ISSN 1015-3837. - ELETTRONICO. - 51:1(2024), pp. 1-6. [10.1159/000533879]

Identification of Fetuses at Increased Risk of Trisomies in the First Trimester Using Axial Planes

Montaguti, Elisa
;
Diglio, Josefina;Petrachi, Benedetta;Arosio, Viola;Fiorentini, Marta;Cavalera, Marta;Pellegrino, Anita;Lenzi, Jacopo;Pilu, Gianluigi
2024

Abstract

Introduction: The measurement of nuchal translucency (NT) is crucial for assessing risk of aneuploidies in the first trimester. We investigate the ability of NT assessed by a transverse view of the fetal head to detect fetuses at increased risk of common aneuploidies at 11–13 weeks of gestation. Methods: We enrolled a nonconsecutive series of women who attended our outpatient clinic from January 2020 to April 2021 for aneuploidy screening by means of a first trimester combined test. All women were examined by operators certified by the Fetal Medicine Foundation. In each patient, NT measurements were obtained both from the median sagittal view and transverse view. We calculated the risk of aneuploidy using NT measurements obtained both with sagittal and axial scans, and then we compared the results. Results: A total of 1,023 women were enrolled. An excellent correlation was found between sagittal and transverse NT measurements. The sensitivity and specificity of the axial scan to identify fetuses that were deemed at risk of trisomy 21 using standard sagittal scans were 40/40 = 100.0% (95% confidence interval [CI]: 91.2–100.0) and 977/ 983 = 99.4% (95% CI: 98.7–99.7), respectively. The sensitivity and specificity of the axial scan to identify fetuses at risk of trisomy 13 or 18 were 16/16 = 100.0% (95% CI: 80.6–100.0) and 1,005/1,007 = 99.8% (95% CI: 99.3–99.9). Conclusions: When the sonogram, a part of combined test screening, is performed by an expert sonologist, axial views can reliably identify fetuses at increased risk of trisomies without an increase in false negative results.
2024
Identification of Fetuses at Increased Risk of Trisomies in the First Trimester Using Axial Planes / Montaguti, Elisa; Diglio, Josefina; Petrachi, Benedetta; Arosio, Viola; Fiorentini, Marta; Cavalera, Marta; Pellegrino, Anita; Amodeo, Silvia; Lenzi, Jacopo; Pilu, Gianluigi. - In: FETAL DIAGNOSIS AND THERAPY. - ISSN 1015-3837. - ELETTRONICO. - 51:1(2024), pp. 1-6. [10.1159/000533879]
Montaguti, Elisa; Diglio, Josefina; Petrachi, Benedetta; Arosio, Viola; Fiorentini, Marta; Cavalera, Marta; Pellegrino, Anita; Amodeo, Silvia; Lenzi, Jacopo; Pilu, Gianluigi
File in questo prodotto:
File Dimensione Formato  
955788_merged.pdf

accesso aperto

Tipo: Postprint
Licenza: Licenza per accesso libero gratuito
Dimensione 952.98 kB
Formato Adobe PDF
952.98 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/955788
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact