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Revista Médica del Uruguay

Print version ISSN 0303-3295On-line version ISSN 1688-0390


BOTTARO, Soledad et al. Twin reversed arterial perfusion sequence; coagulation of the umbilical cord. A report on the first case in Uruguay. Rev. Méd. Urug. [online]. 2021, vol.37, n.3, e703.  Epub Sep 01, 2021. ISSN 0303-3295.

Twin reversed arterial perfusion sequence (TRAPS) is rather an unusual and severe complication of monochorionic twin pregnancies. It usually occurs when the normal-appearance heart of a twin acts as a pump for one or more dysmorphic twins whose head, thoracic organs and upper limbs fail to totally develop or do not develop at all and thus, have no cardiac activity. The abnormal vascular architecture at the placenta changes the arterial flow towards the acardiac twin. The exact pathophysiological mechanisms that result in this devastating phenomenon are still unknown. The study presents the clinical case of a 19-year- old patient pregnant with monoamniotic, monochorionic twins and a diagnosis of TRAPS, treated by laser coagulation of the acardiac twin’s umbilical cord.

Keywords : Acardiac twin; Pregnancy, twin; Monochorionic twins; Reverse arterial perfusion sequence; TRAP sequence.

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