Intertwin differences in umbilical artery pulsatility index are associated with infant survival in twin-to-twin transfusion syndrome

Espinoza J., Belfort M. A., Shamshirsaz A. A., Nassr A. A., Cortes M. S., Donepudi R., ...More

JOURNAL OF PERINATAL MEDICINE, vol.49, no.9, pp.1122-1128, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 9
  • Publication Date: 2021
  • Doi Number: 10.1515/jpm-2021-0060
  • Journal Name: JOURNAL OF PERINATAL MEDICINE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, CAB Abstracts, CINAHL, EMBASE, MEDLINE, Veterinary Science Database
  • Page Numbers: pp.1122-1128
  • Keywords: Doppler, infant survival, intertwin, twin-to-twin transfusion syndrome, umbilical artery, VASCULAR ANASTOMOSES, LASER COAGULATION, OUTCOMES, PREGNANCIES, IMPROVEMENT, THERAPY, VESSELS
  • Inonu University Affiliated: No

Abstract

Objectives: To evaluate the association of intertwin differ-ences in umbilical artery pulsatility index (DUAPI) and infant survival in twin-to-twin transfusion syndrome (TTTS). Methods: Absolute DUAPI was calculated prior to laser surgery. Receiver-operating characteristics (ROC) curve analysis provided an intertwin DUAPI cutoff of 0.4 for the prediction of double twin survival to 30 days of life. Infant survival was compared between women with an intertwin DUAPI <0.4 and >= 0.4 in the whole cohort, in TTTS cases with Quintero stages I/II and in those with Quintero stages III/IV. Regression analyses were performed to evaluate the association of intertwin DUAPI <0.4 and infant survival adjusted for confounders. Results: In total, 349 TTTS cases were included. Double twin survival to 30 days was observed in 67% (234/349) of cases. Significant differences in double twin survival was seen between intertwin DUAPI groups in the whole cohort (76.8 vs. 52.2%; p<0.001), in women with TTTS Quintero stage I or II (77.8 vs. 58.5%; p=0.015) as well as in women with TTTS Quintero stage III or IV (75 vs. 49.5%; p=0.001). Intertwin DUAPI <0.4 conferred a threefold increased chance for double twin survival. Conclusions: Small intertwin DUAPI is associated with increased double infant survival in early and advanced TTTS stages.