Table 3

Prenatal and postnatal course of recipients with pulmonary stenosis

Recipient	Postnatal cardiac diagnosis	GA at LC (weeks)	Recipient findings						Donor		GA at delivery (weeks)	Postnatal course
Recipient	Postnatal cardiac diagnosis	GA at LC (weeks)	Fetal echocardiography	TR	MR	DVnegA	IU PS	UA velocity	UA velocity	Echocardiography	GA at delivery (weeks)	Postnatal course
*Instantaneous pressure measured by the Bernoulli equation of echocardiography.
CHF, congestive heart failure; GA, gestational age; IU, intrauterine; LC, laser coagulation; MR, mitral valve regurgitation; PI, pulsatility index of the umbilical artery; Pmax, maximum pressure gradient; PS, pulmonary stenosis, UA, umbilical artery, UAEDF, umbilical artery end diastolic flow.
1	Severe PS	18+5	Normal; week 20+5: normal; week 29: valvar PS, small valvar annulus	−	−	−	+	UAEDF normal, PI normal	UAEDF normal	Normal; fetal death 5 days after LC	33+5	Severe PS requiring balloon valvoplasty at ages 1 and 9 months; normal valve morphology; residual mild PS (32 mm Hg*)
2	Severe PS	20+3	CHF	+	+	+	−	UAEDF normal, PI normal	UAEDF negative	Normal; fetal death 1 day after LC	39+0	Progression from moderate (Pmax 68 mm Hg) to severe PS (Pmax 90 mm Hg) within 4 months, no TR, small pulmonary annulus of 7 mm at 4 months, thickening of pulmonary valve leaflets; balloon valvoplasty at 4 months; residual mild PS of 30 mm Hg*
3	Moderate PS	19+0	Mild CHF	+	−	+	−	UAEDF normal, PI normal	UAEDF normal	Normal	35+1	Postpartum systolic heart murmur; moderate PS (Pmax 40 mm Hg*), thickening of pulmonary valve leaflets
4	Mild supravalvar stenosis	19+4	CHF	+	+	+	−	UAEDF normal, PI normal	UAEDF normal	Normal	35+4	Mild increase in velocity within the pulmonary trunk (1.8 m/s)