A Case of Monochorionic-Triamniotic Triplet Pregnancy with TRAP Sequence Successfully Treated with Radiofrequency Ablation with a Parallel Circuit Consisting of Anastomosed Blood Vessels between the Direct Pump Fetus and the Indirect Pump Fetus

Table 1

Blood flow changes of the direct pump fetus and the indirect pump fetus around RFA.

	Direct pump fetus; (fetus B)		Indirect pump fetus; (fetus C)
	Pre-intervention	Post-intervention	Pre-intervention	Post-intervention
UA-PI	1.25	1.19	0.97	0.95
MCA-PSV (cm/s)	24.3	22.2	21.5	23.4
DV-PI	0.42	0.48	0.37	0.45
UV-pulsation	no	no	no	no
MVP (cm)	4.3	4.5	3.8	4

UA-PI, pulsatility index of the umbilical artery; MCA-PSV, middle cerebral arterial peak systolic velocity; DV-PI, pulsatility index of the ductus venosus; UV-pulsation, pulsation of the umbilical vein; MVP, maximal vertical pocket.