Short-term results of interventional therapy for infants (7–36 months old) with patent ductus arteriosus and moderate-to-severe pulmonary hypertension: a retrospective study

Table 3 Characteristics of infants during the perioperative period (mean ± SD)

	Preoperatively	Immediately postoperatively	At 6 months postoperatively	P
LA diameter (mm)	23.57 ± 3.74^b	20.21 ± 4.63^a	18.04 ± 2.15 ^a,b	< 0.01
LVEDD (mm)	37.21 ± 6.07^b	32.82 ± 5.37^a	29.82 ± 4.39 ^a,b	< 0.01
Pulmonary systolic pressure (mmHg)	62.89 ± 12.37^a,b	27.82 ± 7.85^a	25.57 ± 5.17^b	0.013
LVEF (%)	55.46 ± 1.95	55.43 ± 1.71	54.18 ± 9.46	0.628

LA, left atrium; LVEDD, left ventricular end-diastolic dimension; LVEF, left ventricular ejection fraction. Statistical comparisons: ^ap < 0.05; ^bp < 0.01.