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Campos, D., et al., (2016) [35]
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N = 33 monochorionic diamniotic twins (post-laser), and N = 22 term singletons Birth to 12 months, corrected for prematurity
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Bayley Scales of Infant Development, Clinical examination of TTTS group. Two assessments, in first and second 6 months of life.
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Cerebral palsy in 18%, strabismus in 9%, microcephaly in 3% of TTTS group. Significant difference between groups in prevalence of cognitive and fine motor deficits apparent by 6 months (greater risk in TTTS group); by 12 months, significantly greater prevalence of deficits in all domains for TTTS group Comparative results at second assessment not provided (table of first assessment repeated in error). Donors 7 times increased risk of adverse outcomes c.f. recipients; donor status and low socioeconomic status, and cardiorespiratory disease were associated with poorer expressive communication & fine motor skills respectively
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Müllers, S. et al., (2015) [36]
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N = 106 (post-laser). Median age 4 years (range 6 mo – 7 yrs) (correction for prematurity not specified)
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Individual correspondence and paediatric evaluation (details not specified)
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Ongoing neurodevelopmental concerns in 14% (speech and language concerns n = 7, behavioural concerns n = 2, mild motor delay n = 2, mild cerebral palsy n = 2, major cerebral palsy n = 2)
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Tosello, B. et al., (2014) [29].
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N = 35 (post-laser). Median age 37 months, mean 30 mo (range 4 mo - 5 yrs)
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Neurological assessment at discharge from maternity hospital. Ages and Stages Questionnaire (ASQ) at up to 5 years
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As neonates, ≈7% neurologically abnormal (≈93% normal). At follow-up, ≈31% abnormal based on ASQ (≈69% normal), ≈6% severely neurologically abnormal (cerebral palsy). Of children found to be abnormal at follow-up, 45% had not been detected on routine medical review. Donor status and birth < 32 weeks significantly associated with adverse neurosensory outcome as neonates. No correlations at follow-up between outcome and donor status, severity of TTTS or other variables (but small numbers)
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Sago, H. et al., (2010) [37]
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N = 275 (post-laser). Age 6 months (correction for prematurity not specified)
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Review of cerebral imaging & clinical assessment by paediatrician (details not specified)
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Major neurological disability in ≈5% (severe IVH, cystic PVL, CP, hydrocephalus, ventriculomegaly, or multiple infarcts)
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