Journal of Cardiovascular Disease Research
“ Yolk sac as a predictor of pregnancy outcome – a hospital based prospective studyâ€.
SAMBHUNATH BANDYOPADHYAY, SRIJONI CHOWDHURY ,SANJANA HALDER ,SASWATA BISWAS ,POUSHALI SANYAL, NIHAR RANJAN SARKAR, GOURI SHANKAR KAMILYA
JCDR. 2022: 86-97
Abstract
The secondary yolk sac is the first extraembryonic structure that can be detected withtransvaginal sonography (TVS) surrounding the chorionic cavity and can be seen from the 5th tothe 12th week menstrual age, at the latest.During organogenesis and before placental circulation is established, yolk sac is theprimary source of exchange between the embryo and the mother. Yolk sac hasnutritive, endocrine, metabolic, immunologic, secretory, excretory and hematopoieticfunctions. This study was conducted to evaluate the size of secondary yolk sac as apredictor of pregnancy outcome.
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