Staging of twin-twin transfusion syndrome

Rubén A. Quintero, Walter J. Morales, Mary H. Allen, Patricia W. Bornick, Patricia K. Johnson, Michael Kruger

Research output: Contribution to journalArticle

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Abstract

OBJECTIVE: The purpose of this study was to evaluate the prognostic value of sonographic and clinical parameters to develop a staging classification of twin-twin transfusion syndrome (TTTS). STUDY DESIGN: Severe TTTS was defined as the presence of polyhydramnios (maximum vertical pocket of ≥8 cm) and oligohydramnios (maximum vertical pocket of ≤2 cm). Nonvisualization of the bladder in the donor twin (-BDT) and absence of presence of hydrops was also noted. The middle cerebral artery, umbilical artery, ductus venosus, and umbilical win in both fetuses were assessed with pulsed Doppler. Critically abnormal Doppler studies (CADs) were defined as absent/reverse end-diastolic velocity in the umbilical artery, reverse flow in the ductus venosus, or pulsatile flow in the umbilical vein. TTTS was staged as follows: stage I, BDT still visible; stage II, BDT no longer visible, no CADs; stage III, CADs; stage IV, hydrops; stage V, demise of one or both twins. Laser photocoagulation of communicating vessels (LPCV) or umbilical cord ligation was performed depending on the severity of the condition. The study was approved by the Institutional Review Board of St. Joseph's Hospital in Tampa and by the Fetal Therapy Board at Hutzel Hospital, Detroit, and all patients gave informed consent. RESULTS: A total of 80 of 108 referred patients met criteria for surgery, but only 65 were treated surgically: 48 with LPCV and 17 with umbilical cord ligation. Complete Doppler data were obtainable in 41 of 48 LPCV patients. Survival rates by stage for one or two fetuses were statistically different (χ-squared analysis = 12.9,df= 6,p = 0.044). Neither percent size discordance nor gestational age at diagnosis were predictive of outcome. CONCLUSION: Staging of TTTS using the proposed criteria has prognostic significance. This staging system may allow comparison of outcome data of TTTS with different treatment modalities.

Original languageEnglish
Pages (from-to)550-555
Number of pages6
JournalJournal of Perinatology
Volume19
Issue number8 PART. 1
StatePublished - Dec 1 1999

Fingerprint

Fetofetal Transfusion
Light Coagulation
Umbilical Arteries
Lasers
Umbilical Cord
Ligation
Edema
Fetus
Fetal Therapies
Oligohydramnios
Polyhydramnios
Umbilicus
Pulsatile Flow
Umbilical Veins
Research Ethics Committees
Middle Cerebral Artery
Informed Consent
Gestational Age
Urinary Bladder
Survival Rate

ASJC Scopus subject areas

  • Obstetrics and Gynecology
  • Pediatrics, Perinatology, and Child Health

Cite this

Quintero, R. A., Morales, W. J., Allen, M. H., Bornick, P. W., Johnson, P. K., & Kruger, M. (1999). Staging of twin-twin transfusion syndrome. Journal of Perinatology, 19(8 PART. 1), 550-555.

Staging of twin-twin transfusion syndrome. / Quintero, Rubén A.; Morales, Walter J.; Allen, Mary H.; Bornick, Patricia W.; Johnson, Patricia K.; Kruger, Michael.

In: Journal of Perinatology, Vol. 19, No. 8 PART. 1, 01.12.1999, p. 550-555.

Research output: Contribution to journalArticle

Quintero, RA, Morales, WJ, Allen, MH, Bornick, PW, Johnson, PK & Kruger, M 1999, 'Staging of twin-twin transfusion syndrome', Journal of Perinatology, vol. 19, no. 8 PART. 1, pp. 550-555.
Quintero RA, Morales WJ, Allen MH, Bornick PW, Johnson PK, Kruger M. Staging of twin-twin transfusion syndrome. Journal of Perinatology. 1999 Dec 1;19(8 PART. 1):550-555.
Quintero, Rubén A. ; Morales, Walter J. ; Allen, Mary H. ; Bornick, Patricia W. ; Johnson, Patricia K. ; Kruger, Michael. / Staging of twin-twin transfusion syndrome. In: Journal of Perinatology. 1999 ; Vol. 19, No. 8 PART. 1. pp. 550-555.
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