TAPS Calculator for Monochorionic Twins
Calculate the blood transfusion that can happen between twins who share the same placenta
Results presented are based on published clinical articles, being only a mathematical analysis and have no guarantee of results. The diagnosis of the sequence of Anemia and Polycythemia must be made not only based on the result presented. All calculations must be confirmed by a trained physician before clinical use. The suggested results are not a substitute for clinical judgment. Fetalcalc, nor any other party involved in the preparation or publication of this website, is not responsible for any damages or consequences arising from the use of this material.
References:
1. Seqüência de Anemia-Policitemia
2. Mari G, et al. Noninvasive diagnosis by Doppler ultrasonography of fetal anemia due to maternal red-cell alloimmunization. Collaborative Group for Doppler Assessment of the Blood Velocity in Anemic Fetuses. N Engl J Med. 2000 Jan 6;342(1):9-14.
3. Tollenaar LSA, Lopriore E, Middeldorp JM, Haak MC, Klumper FJ, Oepkes D, Slaghekke F. Improved prediction of twin anemia-polycythemia sequence by delta middle cerebral artery peak systolic velocity: new antenatal classification system. Ultrasound Obstet Gynecol. 2019 Jun;53(6):788-793.
4. Klaritsch P, et al. Reference ranges for middle cerebral artery peak systolic velocity in monochorionic diamniotic twins: a longitudinal study. Ultrasound Obstet Gynecol. 2009 Aug;34(2):149-54.
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