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02 - GESTAÇÃO DE GÊMEOS UNIDOS (SIAMESES): DIAGNÓSTICO PRÉ-NATAL, COMPLEXIDADE ANATÔMICA E MANEJO CLÍNICO OBSTÉTRICO

Doi: 10.47094/978-65-284-0587-9/25-29

PALAVRAS CHAVE: Obstetrícia. Parto (Obstetrícia) - Aspectos psicológicos. Enfermagem obstétrica. Gravidez. Humanização dos serviços de saúde.

KEYWORDS: Obstetrics. Childbirth (Obstetrics) – Psychological aspects. Obstetric nursing. Pregnancy. Humanization of health services.

ABSTRACT:
1. INTRODUCTION: EMBRYOLOGY AND THE CHALLENGE OF MONOCHORIONIC MONOAMNIOTIC TWINNING
Conjoined twinning represents one of the most complex presentations in high-risk obstetrics. Resulting from the incomplete division of the embryonic disc after the thirteenth day post-fertilization, or from the secondary fusion of adjacent embryonic discs, a pregnancy involving conjoined twins (popularly known as Siamese twins) occurs at an estimated frequency of between 1:50,000 and 1:200,000 births; it is invariably associated with monochorionicity and monoamniocity (FREITAS et al., 2019; CASTRO et al., 2021).
Clinical management during the prenatal period requires an accurate structural diagnosis, early identification of shared fusion areas, and continuous hemodynamic monitoring. The complex vascular and cardiac anomalies associated with this condition increase the rates of early pregnancy loss, growth restriction, and intrauterine death (GONSALVES et al., 2024; TEIXEIRA CASTRO et al., 2021).
This chapter outlines the obstetric challenges inherent in the prenatal care of conjoined twin pregnancies, emphasizing diagnostic imaging modalities, morphological stratification, planning the mode of delivery, and multidisciplinary care.

Autores

  • Dulce Maria Cardoso da Silva

  • Elisângela da Silva Morais

  • Francisca Lenice Pinto

  • Francisca Leonilda Sampaio Rodrigues

  • Francisca Moraes da Silva

  • Maria Betânia da Silva

  • Maria Edna da Silva Bandeira

  • Maria do Socorro Silva de Brito

  • Marli de Oliveira Nunes

  • Mary Grace Magalhães de Araújo

  • Michelle Leane Santana da Silva

  • Sônia Cristina Ribeiro Rezende

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