Table 1.

Demographic, procedural, and follow-up data

	MVP	Micro plug	Piccolo	p value
n (58)	25	25	8
Demographic data
Mean gestational age	27w6d	27w0d	26w5d	0.46
Mean birth weight (kg)	1.1	0.99	0.91	0.53
Sex (% female)	56%	60%	50%	0.88
Procedure data
Mean weight at procedure (kg)	1.51	1.40	1.31	0.78
Mean age at procedure (days)	26	30	28	0.72
Respiratory support				0.72
Conventional vent	11	8	4
Oscillator	5	3	1
CPAP	8	7	2
Nasal Cannula	1	2	1
None	0	3	0
Not reported	0	2	0
Mean PDA size aortic end (mm)	3.9	3.4	3.2	0.18
Mean PDA size minimum (mm)	2.5	2.3	2.2	0.68
Mean PDA length (mm)	10.2	9.4	8.2	0.19
Fluoro time (min)	7.7	9.2	10.2	0.16
Radiation DAP (cGy*cm2)	42.9	40.2	38.3	0.96
Follow-up data
Mean time to extubation (days)	10	6	12	0.37
Peak gradient (Doppler descending aorta, mmHg)	6.4	5.5	4.6	0.35
Peak gradient (Doppler left pulmonary artery, mmHg)	5.5	7.1	5.2	0.39