Fetal thymus in growth-restricted fetuses due to placental insufficiency
Rev. Assoc. Med. Bras. (1992, Impr.)
;
69(1): 136-141, Jan. 2023. tab, graf
Artículo
en Inglés
|
LILACS-Express
| LILACS
| ID: biblio-1422592
ABSTRACT
SUMMARY OBJECTIVE:
The aim of this study was to assess fetal thymus size by ultrasound in growth-restricted fetuses due to placental insufficiency and compare to high-risk and low-risk pregnancy fetuses with normal placental function.METHODS:
This is a nested case-control study of pregnant women followed up at a university hospital (July 2012 to July 2013). In all, 30 pregnant women presenting small fetuses for gestational age (estimated fetal weight <p10) due to placental insufficiency (umbilical artery Doppler >p95) were compared to 30 high-risk and 30 low-risk pregnancies presenting normal Doppler indices. The thymus transverse diameter and perimeter were converted into zeta score according to the normal values for gestational age. Head circumference and femur length were used to calculate ratios.RESULTS:
Fetal thymus were significantly lower in pregnancies with placental insufficiency when compared to high-risk and low-risk pregnancies presenting, respectively, transverse diameter zeta score (-0.69±0.83 vs. 0.49±1.13 vs. 0.83±0.85, p<0.001) and P zeta score (-0.73±0.68 vs. 0.45±0.96 vs. 0.26±0.89, p<0.001). There was also a significant difference (p<0.05) in the ratios among the groups pregnancies with placental insufficiency (TD/HC=0.10, P/FL=1.32, and P/HC=0.26), high-risk pregnancies (TD/HC=0.11, P/FL=1.40, and P/HC=0.30), and control group (DT/HC=0.11, P/FL=1.45, and P/HC=0.31).CONCLUSION:
Fetal thymus size is reduced in growth-restricted fetuses due to placental insufficiency, suggesting fetal response as a consequence of the adverse environment.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Tipo de estudio:
Estudio observacional
/
Factores de riesgo
Idioma:
Inglés
Revista:
Rev. Assoc. Med. Bras. (1992, Impr.)
Asunto de la revista:
EducaÆo em Sa£de
/
GestÆo do Conhecimento para a Pesquisa em Sa£de
/
Medicina
Año:
2023
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade de São Paulo/BR
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