Abstract
Objectives
To evaluate the survival of twin-to-twin transfusion syndrome (TTTS) and concomitant
twin anemia polycythemia sequence (TAPS) compared to TTTS without TAPS at the time
of fetoscopic laser photocoagulation (FLP).
Methods
TTTS pregnancies undergoing FLP were divided to three groups including (i) traditional
TAPS definition of middle cerebral artery (MCA) peak systolic velocity (PSV) < 1 multiple
of the median (MoM) in recipient and > 1.5 MoM in the donor fetus, (ii) delta MCA-PSV > 0.5
MoM and (iii) delta MCA-PSV > 1.0 MoM.
Results
A total of 353 monochorionic twins underwent FLP for TTTS. Based on the traditional
definition, 335 (94.9 %) had TTTS only and 18 (5.1 %) had TTTS + TAPS. There were
245 (69.4 %) TTTS only and 108 (30.6 %) TTTS + TAPS considering delta MCA-PSV > 0.5
MoM and 339 (96 %) TTTS only and 14 (4 %) TTTS + TAPS considering delta MCA-PSV > 1.0
MoM. No significant differences in survival were noted at birth or 30-days after delivery
between TTTS and TTTS with TAPS patients using the traditional definition, delta > 0.5
MoM or delta > 1.0 MoM.
Conclusion
The rate of neonatal survival at birth or at 30-days of life following FLP for TTTS
only and TTTS with TAPS were not different based on any of the clinically used TAPS
definitions.
Keywords
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Article info
Publication history
Published online: October 10, 2022
Accepted:
October 6,
2022
Received in revised form:
October 4,
2022
Received:
August 23,
2022
Identification
Copyright
© 2022 Elsevier B.V. All rights reserved.