Which is more accurate measuring pulmonary artery resistance index or 4D lung volume for prediction of neonatal respiratory distress in preterm pregnancies?

Egyptian Journal of Radiology and Nuclear Medicine

Table 1 Demographic data of the included women regarding (maternal age, gestational age, and mode of delivery, PA-RI, lung volume and fetal outcome)

Baseline characteristics
Maternal age	Range	20	–	38
Maternal age	Mean ± SD	29.871	±	5.906
GA	Range	32	–	36
GA	Mean ± SD	33.789	±	1.536
Mode of delivery	Normal	74		50.34
Mode of delivery	Cesarean	73		49.66
PA-RI	Range	0.67	–	0.88
PA-RI	Mean ± SD	0.760	±	0.060
Lung volume	Range	18.3	–	40.5
Lung volume	Mean ± SD	31.633	±	7.482
BW	Range	1700	–	3100
BW	Mean ± SD	2213.333	±	479.078
Apgar score at 1 min	Range	3	–	9
Apgar score at 1 min	Mean ± SD	6.490	±	2.698
Apgar score at 5 min	Range	4	–	10
Apgar score at 5 min	Mean ± SD	7.007	±	2.459
RD	Developed RDS	59		40.14
RD	Did not develop RDS	88		59.86
Developed RDS	Grade I	21		35.59
	Grade II	14		23.73
	Grade III	16		27.12
	Grade IV	8		13.56
ICU	Yes	59		40.14
ICU	No	88		59.86
ICU duration (days)	Range	2	–	6
ICU duration (days)	Mean ± SD	4.000	±	1.306
Neonatal mortality	No	117		79.59
Neonatal mortality	Yes	30		20.41
Need for respiratory support	No	88		59.86
	Noninvasive	29		19.73
	Mechanical ventilation	30		20.41

GA gestational age, PA-RI pulmonary artery resistance index, RD respiratory distress, RDS respiratory distress syndrome, BW body weight, ICU intensive care unit