Surgical management of patent ductus arteriosus in pre-term infants - a british paediatric surveillance study

BMC Pediatrics

Table 2 Decision to refer for surgery based on gestational age at birth, with P values

Reason for decision to refer for surgery	Number reporting reason for decision to refer for surgery by gestational age at birth (n, %)			Chi² p-value for difference between groups
Reason for decision to refer for surgery	Extremely preterm (n = 231)	Very preterm (n = 25)	Moderately preterm (n = 7)	Chi² p-value for difference between groups
Inability to wean respiratory support	199 (86.2)	17 (68.0)	4 (57.1)	0.010
Haemodynamically Significant	203 (87.9)	18 (72.0)	6 (85.7)	0.090
Cardiovascular instability	73 (31.6)	6 (24.0)	2 (28.6)	0.730
Poor growth	48 (20.8)	11 (44.0)	5 (71.4)	< 0.001
Contra-indication of medical therapy	44 (19.1)	3 (12.0)	0 (0)	0.312
Other^a	31 (13.4)	3 (12.0)	3 (42.9)	0.083

^a Other reasons (n = 37) included: Unable to complete medical treatment (n = 12), NEC (n = 8), PH (n = 4), feeding difficulty (n = 2), duct thought not to be related to prematurity (n = 1), evolving aortic stenosis (n = 1), RSV negative bronchiolitis (n = 1), pulmonary hypoplasia (n = 1), congestive cardiac failure (n = 1), thrombus in aorta (n = 1), chromosome disorder (mosaic trisomy 14) (n = 1). 4 questionnaires specified “other” but no further explanation was documented

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