Placental types and twin-twin transfusion syndrome

Carlos Bermúdez, Carlos H. Becerra, Patricia W. Bornick, Mary H. Allen, Jorge Arroyo, Rubén A. Quintero

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

OBJECTIVE: The purpose of this study was to assess the value of a proposed classification of monochorionic placenta in reference to twin-twin transfusion syndrome. STUDY DESIGN: The placentas from laser-treated patients with twin-twin transfusion syndrome and from uncomplicated monochorionic pregnancies that were delivered between January 1997 and December 2000 were included in the study. Placentas were classified as type A (no anastomoses), type B (only deep anastomoses), type C (only superficial anastomoses), and type D (deep and superficial anastomoses). The number and type of anastomoses were documented in each placental type. The severity of twin-twin transfusion syndrome was assessed in stages, as previously described. The relationship between placental types and the development and severity of twin-twin transfusion syndrome was determined. RESULTS: One hundred thirty-one placentas were examined. Twin-twin transfusion syndrome developed in 0% (0/4 placentas) of type A, in 100% (85/85 placentas) of type B, in 5.6% (1/18 placentas) of type C, and in 79.17% (19/24 placentas) of type D placentas. An average of 4.17 (range, 1-11) vascular anastomoses was found. The mean number of superficial anastomoses was not different between patients with twin-twin transfusion syndrome and patients with no twin-twin transfusion syndrome (1.6 vs 1.71, respectively; P = .69, Student t test). The presence or absence of superficial anastomoses was not associated with differences in the severity of twin-twin transfusion syndrome. CONCLUSION: This classification represents a practical approach to the surgical pathologic assessment of vascular anastomoses in monochorionic placentas, with a strong clinical correlation. It also allows for the clarification of the relationship between superficial anastomoses and twin-twin transfusion syndrome.

Original languageEnglish
Pages (from-to)489-494
Number of pages6
JournalAmerican Journal of Obstetrics and Gynecology
Volume187
Issue number2
DOIs
StatePublished - Aug 1 2002

Fingerprint

Fetofetal Transfusion
Placenta
Blood Vessels
Placentation
Lasers

Keywords

  • Fetal therapy
  • Laser photocoagulation
  • Placental anastomoses
  • Twin-twin transfusion syndrome
  • Twins

ASJC Scopus subject areas

  • Medicine(all)
  • Obstetrics and Gynecology

Cite this

Bermúdez, C., Becerra, C. H., Bornick, P. W., Allen, M. H., Arroyo, J., & Quintero, R. A. (2002). Placental types and twin-twin transfusion syndrome. American Journal of Obstetrics and Gynecology, 187(2), 489-494. https://doi.org/10.1067/mob.2002.124280

Placental types and twin-twin transfusion syndrome. / Bermúdez, Carlos; Becerra, Carlos H.; Bornick, Patricia W.; Allen, Mary H.; Arroyo, Jorge; Quintero, Rubén A.

In: American Journal of Obstetrics and Gynecology, Vol. 187, No. 2, 01.08.2002, p. 489-494.

Research output: Contribution to journalArticle

Bermúdez, C, Becerra, CH, Bornick, PW, Allen, MH, Arroyo, J & Quintero, RA 2002, 'Placental types and twin-twin transfusion syndrome', American Journal of Obstetrics and Gynecology, vol. 187, no. 2, pp. 489-494. https://doi.org/10.1067/mob.2002.124280
Bermúdez C, Becerra CH, Bornick PW, Allen MH, Arroyo J, Quintero RA. Placental types and twin-twin transfusion syndrome. American Journal of Obstetrics and Gynecology. 2002 Aug 1;187(2):489-494. https://doi.org/10.1067/mob.2002.124280
Bermúdez, Carlos ; Becerra, Carlos H. ; Bornick, Patricia W. ; Allen, Mary H. ; Arroyo, Jorge ; Quintero, Rubén A. / Placental types and twin-twin transfusion syndrome. In: American Journal of Obstetrics and Gynecology. 2002 ; Vol. 187, No. 2. pp. 489-494.
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