Objective
To identify risk factors for cerebral lesions among survivors of TTTS treated with laser surgery.
Study Design
A multilevel regression analysis examined risk factors for neonatal cerebral lesions identified by imaging. Imaging was routine in “high-risk survivors”, defined as those delivered at <32 weeks' gestation, and by clinical indications if born later. Severe lesions were defined as: intraventricular hemorrhage grade III–IV, cystic periventricular leukomalacia, ventriculomegaly and/or hydrocephalus, microcephaly, infarctions, porencephalic/Dandy-Walker cysts, or bilateral other cysts.
Results
For 262 consecutive laser-treated TTTS patients, 18 neonates had severe lesions identified among 427 individual survivors (4.2%) and 242 “high-risk survivors” (7.4%). Forty-six newborns had any cerebral lesion, resulting in lesion rates of 10.8%–19.0%. Delivery <32 weeks' (OR=4.95, p<0.001) and <28 weeks' (OR=6.25, p<0.001) gestation were associated with increased likelihood of any cerebral lesion.
Conclusions
This cohort showed low rates (4–7%) of severe neonatal cerebral lesions, with prematurity being the primary risk factor.