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İnsan plasentasının morfometrisi: plasental parametrelerin karşılaştırılması

Morphometry of human placentas: a comparison of placental parameters

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Abstract (2. Language): 
We aimed to investigate the relationships between maternal-neonatal parameters and morphometric characteristics of human placenta. We performed this study on 259 human placentas. We observed that 257 placentas were single and two (0.8%) were twin. Number of cotyledon was 16±2.22. The length of umbilical cord was 57.13±9.08 cm. The cord coiling was 0.18±0.1 per cm. Two out of 259 (0.8%) placentas had knotted umbilical cords. In most of the cases, there were two umbilical arteries and one umbilical vein. In two cases (0.8%), the artery was single. Diameters of umbilical artery and umbilical vein were 2.48±0.38 mm and 2.97±0.49 mm, respectively. We compared the number of cotyledon and hypercoiling of the cord. The differences between them were statistically significant. In addition, there were significant correlations between hypercoiling of the cord, and abortion and APGAR scores.
Abstract (Original Language): 
Bu çalışmada maternal-neonatal parametreler ile insan plasentasının morfometrik karakteristikleri arasındaki ilişkilerin araştırılması amaçlandı. Çalışma 259 insan plasentası üzerinde gerçekleştirildi. Çalışmada 257 tek plasenta ve iki adet ikiz plasenta tespit edildi. Kotiledon sayısı 16±2.22 idi. Umbilikal kordun uzunluğu 57.13±9.08 cm olarak ölçüldü. "Cord coiling index" (her cm başına düşen korddaki kıvrım sayısı) 0.18±0.1 cm olarak hesaplandı. İki yüz elli dokuz plasentanın ikisinde (%0.8) düğümlü umbilikal kord vardı. Vakaların çoğunda umbilikal arter sayısı iki, ven sayısı bir olarak bulundu. İki vakada ise sadece bir arter vardı. Umbilikal arter ve ven çapları sırasıyla 2.48±0.38 mm ve 2.97±0.49 mm olarak bulundu. Plasentaların kotiledon sayısı ve kıvrımlılık derecesini karşılaştırdığımızda, aralarındaki farklılıklar istatistiksel olarak anlamlı bulundu. Ek olarak, kıvrımlılık derecesiyle düşük sayısı ve APGAR skoru arasında anlamlı korelasyonlar bulundu.
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REFERENCES

References: 

1. Kouvalainen K, Pynnonen Al, Makarainen M, Peltonen
T. Weights of placenta membranes and umbilical cord.
Duodecim 1971; 87: 1210-1214.
2. Lacro RV, Jones KL, Benirschke K. The umbilical cord
twist: origin, direction, and relevance. Am J Obstet
Gynecol 1987; 157: 833-838.
3. Williams PL, Bannister LH, Berry MM, Collins P, Dyson
M, Dussek JE, Ferguson WJ. Gray's Anatomy. 38th ed.
Edinburgh: Churchill Livingstone, 1995: 158-172.
4. Kothari ML, Mehta LA. Non-identicality of monozygous
twins. J Postgrad Med 1985; 31: 1-4.
5. Cunningham FG, Gant NF, Leveno KJ, Gilstron LC,
Hauth JC, Wenstrom KD. Abnormalities of the umbilical
cord. Williams Obstetrics. 21st ed. New York: McGrawHill Medical Publishing Division, 2001: 831-835.
6. Naeye RL. Disorders of the placenta, fetus, and neonate:
diagnosis and clinical significance. St. Louis: Mosby Year
Book, 1992: 300-310
7. Persutte WH, Hobbins J. Single umbilical artery: a clinical enigma in modern prenatal diagnosis. Ultrasound
Obstet Gynecol 1995; 6: 216-229.
8. Leung AK, Robson WL. Single umbilical artery. A report
of 159 cases. Am J Dis Child 1989; 143: 108-111.
9. Benirschke K. Obstetrically important lesions of the
umbilical cord. J Reprod Med 1994; 39: 262-272.
10. Macpherson T. Fact and fancy. What can we really tell
from the placenta? Arch Pathol Lab Med 1991; 115: 672-
681.
11. Heifetz SA. The umbilical cord: obstetrically important
lesions. Clin Obstet Gynecol 1996; 39: 571-587.
12. Reynolds SRM. Arterial and venous pressures in the
umbilical cord of sheep and the nature of venous return
from the placenta. Am J Physiol 1951; 166: 25-36.
13. Hadar A, Hallak M. Single umbilical artery and umbilical
cord torsion leading to fetal death. A case report. J Reprod
Med 2003; 48: 739-740.
14. Ben-Arie A, Weissman A, Steinberg Y, Levy R, Hagay Z.
Oligohydramnios, intrauterine growth retardation and
fetal death due to umbilical cord torsion. Arch Gynecol
Obstet 1995; 256: 159-161.
15. Dado GM, Dobrin PB, Mrkvicka RS. Venous flow
through coiled and noncoiled umbilical cords. Effects of
external compression, twisting and longitudinal stretching. J Reprod Med 1997; 42: 576-580.
16. Strong TH, Finberg HJ, Mattox JH. Antepartum diagnosis of noncoiled umbilical cords. Am J Obstet Gynecol
1994; 170: 1729-1733.
17. Degani S, Lewinsky RM, Berger H, Spiegel D.
Sonographic estimation of umbilical coiling index and
correlation with Doppler flow characteristics. Obstet
Gynecol 1995; 86: 990-993.
18. Rana J, Ebert GA, Kappy KA. Adverse perinatal outcome
in patients with an abnormal umbilical coiling index.
Obstet Gynecol 1995; 85: 573-577.
19. Ercal T, Lacin S, Altunyurt S, Saygili U, Cinar O, Mumcu
A. Umbilical coiling index: is it a marker for the foetus at
risk? Br J Clin Pract 1996; 50: 254-256.
20. Machin GA, Ackerman J, Gilbert-Barness E. Abnormal
umbilical cord coiling is associated with adverse perinatal
outcomes. Pediatr Dev Pathol 2000; 3: 462-471.
21. de Laat MW, Franx A, van Alderen ED, Nikkels PG,
Visser GH. The umbilical coiling index, a review of the
literature. J Matern Fetal Neonatal Med 2005; 17: 93-
100.

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