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Difference between revisions of "Placenta"
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→Placental mass
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**Sebire and Fox have advocated abandoning the practise of obtaining a placental mass, due to the large number of uncontrolled variables inherent in these measures. Instead, they have advocated using mushy descriptors such as "small", "average" and "large", which require experience in examining the organ.<ref>{{cite book |author= Fox, Harold; Sebire, Neil J. |title=[http://www.amazon.com/Pathology-Placenta-Major-Problems/dp/1416025928/ref=sr_1_fkmr0_1?ie=UTF8&qid=1297259619&sr=1-1-fkmr0 Pathology of the Placenta (Major Problems in Pathology)]|publisher=Saunders |location= |year=2007 |pages= 559-561 |edition=3rd |isbn=978-1416025924 |oclc= |doi= |accessdate=}}</ref> | **Sebire and Fox have advocated abandoning the practise of obtaining a placental mass, due to the large number of uncontrolled variables inherent in these measures. Instead, they have advocated using mushy descriptors such as "small", "average" and "large", which require experience in examining the organ.<ref>{{cite book |author= Fox, Harold; Sebire, Neil J. |title=[http://www.amazon.com/Pathology-Placenta-Major-Problems/dp/1416025928/ref=sr_1_fkmr0_1?ie=UTF8&qid=1297259619&sr=1-1-fkmr0 Pathology of the Placenta (Major Problems in Pathology)]|publisher=Saunders |location= |year=2007 |pages= 559-561 |edition=3rd |isbn=978-1416025924 |oclc= |doi= |accessdate=}}</ref> | ||
***In the context of quality, a measure (even if somewhat flawed), is almost certainly more reproducible than arbitrary descriptors which require experience and a continuing case volume to calibrate. | ***In the context of quality, a measure (even if somewhat flawed), is almost certainly more reproducible than arbitrary descriptors which require experience and a continuing case volume to calibrate. | ||
===Placentomegaly=== | |||
Associations:<ref>URL: [http://quizlet.com/5793113/ob-flash-cards/ http://quizlet.com/5793113/ob-flash-cards/]. Accessed on: 13 January 2012.</ref> | |||
*Maternal diabetes. | |||
*Maternal [[anemia]]/low maternal iron stores.<ref>{{Cite journal | last1 = Hindmarsh | first1 = PC. | last2 = Geary | first2 = MP. | last3 = Rodeck | first3 = CH. | last4 = Jackson | first4 = MR. | last5 = Kingdom | first5 = JC. | title = Effect of early maternal iron stores on placental weight and structure. | journal = Lancet | volume = 356 | issue = 9231 | pages = 719-23 | month = Aug | year = 2000 | doi = | PMID = 11085691 }}</ref> | |||
*Fetal malformations. | |||
*Neoplasms of the placenta, e.g. [[chorangioma]]. | |||
*Twin-twin transfusion syndrome. | |||
*Chronic intrauterine infections. | |||
*Fetomaternal hemorrhage. | |||
Comment: | |||
*Most of causes seem to have one thing in common: | |||
**There is a decreased oxygen delivery to the fetus. | |||
=Overview of placental pathology= | =Overview of placental pathology= | ||