Placental Delivery Mechanism

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Retained placenta after vaginal delivery: risk factors and ...

    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6789409/
    Oct 07, 2019 · Finally, a separated placenta may be trapped or incarcerated due to closure of the cervix prior to delivery of the placenta.2,8–10 Placental hypoperfusion disorders, such as with preeclampsia, and infection have also been proposed as mechanisms for retained placenta, although little is known about the specific mechanism.9,11Author: Nicola C Perlman, Daniela A Carusi

Tutorial 2: Birth of the Placenta - Eccles Health Sciences ...

    https://library.med.utah.edu/nmw/mod2/Tutorial2/norm_phys.html
    Process of placental growth and uterine wall changes during pregnancy. The placenta grows with the placental site during pregnancy. During pregnancy and early labor the area of the placental site probably changes little, even during uterine contractions.

Pregnancy & Labour: Mechanism of separation of placenta

    https://pregnancyandlabour.blogspot.com/2014/01/mechanism-of-separation-of-placenta.html
    Jan 17, 2014 · Mechanism of separation of placenta. Marked retraction reduces effectively the surface area at the placental. site to aboutits half. But as the placenta is inelastic, it can not keep pace. with such an extent of diminution resulting in its buckling.

Placental control of drug delivery - ScienceDirect

    https://www.sciencedirect.com/science/article/pii/S0169409X16302344
    The placenta is a unique organ of fetal origin that provides nutrients and oxygen to the developing fetus and also serves as the avenue for carbon dioxide and other fetal waste products to be eliminated via the maternal circulation [14]. The placenta starts to develop soon after blastocyst implantation.Author: Sanaalarab Al-Enazy, Shariq Ali, Norah Albekairi, Marwa El-Tawil, Erik Rytting

Third stage of labour: delivering placenta and cord ...

    https://www.nct.org.uk/labour-birth/your-guide-labour/third-stage-labour-delivering-placenta-and-cord-clamping
    It speeds up the delivery of the placenta – it usually happens within 30 minutes of having your baby. Your midwife will push on your uterus and pull the placenta out by the umbilical cord. You’ll have the umbilical cord cut between one and five minutes after you give birth.

Placental Insufficiency and Fetal Growth Restriction

    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257343/
    Nov 17, 2011 · The authors concluded that sildenafil citrate vasodilated the feto-placental circulation via a cGMP dependant mechanism involving increased responsiveness to nitrous oxide. Von Dadelszen et al. [ 14 ] studied the role of sildenafil citrate therapy for severe early onset intrauterine growth restriction.Author: Usha Krishna, Sarita Bhalerao

Schultze mechanism definition of Schultze mechanism by ...

    https://medical-dictionary.thefreedictionary.com/Schultze+mechanism
    Schultze mechanism - expulsion of the placenta with the fetal surface foremost. Schultze phantom - a model of a female pelvis used in demonstrating the mechanism of childbirth and the application of forceps. Schultze placenta …

Duncan mechanism definition of Duncan mechanism by ...

    https://medical-dictionary.thefreedictionary.com/Duncan+mechanism
    The progress of placental separation inward from the edges, presenting the maternal surface of the placenta on expulsion. Duncan mechanism. Delivery of the placenta when separation begins at the outer margins and progresses inward, presenting the rough maternal side first.

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