Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.26/8103
Título: Uterine artery impedance during the first eight postpartum weeks.
Autor: Guedes-Martins, L
Gaio, AR
Saraiva, J
Cunha, A
Macedo, F
Almeida, H
Palavras-chave: Útero
Resistência Vascular
Uterus/blood supply
Vascular Resistance
Data: 2015
Citação: Sci Rep. 2015 Mar 5;5:8786.
Resumo: The aim of this study was to construct reference ranges for the uterine artery (UtA) mean pulsatility (PI) and resistance (RI) indices from 1-8 weeks postpartum. A prospective, cross-sectional, and observational study was performed with 320 healthy women from week 1 through week 8 postpartum. UtAs were examined transvaginally using colour and pulsed Doppler imaging, and the means of the right and left values of the PI and RI, as well as the presence or absence of a bilateral protodiastolic notch, were recorded. The 5(th), 50(th) and 95(th) reference percentile curves for the UtA-PI and UtA-RI were derived using regression models. The adjusted reference intervals uncovered a convergence trend at the week 8 time-point, although impedance was lower at the week 1 time-point in multiparous women compared with primiparous women. The notching prevalence was 22.5% (9/40) at week 1 and 95.0% (38/40) at week 8. The study revealed consistent evidence of a progressive increase of postpartum uterine impedance and provided new average UtA-PI and UtA-RI reference charts for weeks 1 through 8. Multiparity does not change the trend but does impart a lower rate of increase, likely as a consequence of previous vascular structural and functional differences.
Peer review: yes
URI: http://hdl.handle.net/10400.26/8103
Aparece nas colecções:Saúde - Cuf - Porto - Artigos Científicos

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