Preoperative predictors of death in twin-to-twin transfusion syndrome treated with laser ablation of placental anastomoses. Am J Obstet Gynecol. 2010 Oct;203(4):388.e1-388.e11. Epub 2010 Aug 9.
Skupski DW, Luks FI, Walker M, Papanna R, Bebbington M, Ryan G, O'Shaughnessy R, Moldenhauer J, Bahtiyar O; North American Fetal Therapy Network (NAFTNet).

OBJECTIVE: To determine preoperative predictive factors for donor and recipient death after laser ablation of placental vessels in twin-to-twin transfusion syndrome.

STUDY DESIGN: Retrospective analysis of North American Fetal Therapy Network center laser procedures, 2002-2009. Factors associated with donor and recipient death were identified by regression analysis.

RESULTS: There were 466 patients from 8 centers. Factors significantly associated with donor fetal death were low donor estimated fetal weight (odds ratio [OR], 0.69; 95% confidence interval [CI], 0.55-0.87) and reversed end diastolic velocity in the umbilical artery (OR, 4.0; 95% CI, 1.54-10.2); for recipient fetal death-low recipient estimated fetal weight (OR, 0.65; 95% CI, 0.44-0.95), recipient reversed "a" wave in the ductus venosus (OR, 2.39; 95% CI, 1.27-4.51) and hydrops (OR, 3.7; 95% CI, 1.1-12.7); for recipient neonatal death-low donor estimated fetal weight (OR, 0.54; 95% CI, 0.30-0.95), high recipient estimated fetal weight (OR, 1.55; 95% CI, 1.06-2.26) and recipient reversed end diastolic velocity in the umbilical artery (OR, 7.8; 95% CI, 1.03-59.3). CONCLUSION: Preoperative findings predict fetal and neonatal demise in twin-to-twin transfusion syndrome treated with laser therapy.

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