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 3 Comparison between fetuses with and without neonatal respiratory distress (RDS)

Chi-square		N		%	N		%	X²	P value
Mode of delivery	Normal	44		74.58	30		34.09	23.158	< 0.001*
Mode of delivery	Cesarean	15		25.42	58		65.91	23.158	< 0.001*
PA-RI	Range	0.73	–	0.88	0.67	–	0.79	9.781	< 0.001*
PA-RI	Mean ± SD	0.806	±	0.056	0.729	±	0.039	9.781	< 0.001*
Lung volume	Range	18.3	–	38.5	25	–	40.5	− 5.623	< 0.001*
Lung volume	Mean ± SD	27.780	±	7.373	34.216	±	6.393	− 5.623	< 0.001*
BW	Range	1700	–	1990	1900	–	3100	− 11.524	< 0.001*
BW	Mean ± SD	1810.169	±	111.641	2483.636	±	439.001	− 11.524	< 0.001*
Apgar score at 1 min	Range	3	–	4	8	–	9	− 69.516	< 0.001*
Apgar score at 1 min	Mean ± SD	3.254	±	0.439	8.659	±	0.477	− 69.516	< 0.001*
Apgar score at 5 min	Range	4	–	5	9	–	10	− 254.541	< 0.001*
Apgar score at 5 min	Mean ± SD	4.017	±	0.130	9.011	±	0.107	− 254.541	< 0.001*
ICU	No	0		0.00	88		100.00	64.228	< 0.001*
ICU	Yes	59		100.00	0		0.00	64.228	< 0.001*
ICU duration (Days)	Range	4	–	6	2	–	3	13.560	< 0.001*
ICU duration (Days)	Mean ± SD	4.763	±	0.837	2.500	±	0.509	13.560	< 0.001*
Neonatal mortality	No	29		49.15	88		100.00	56.219	< 0.001*
Neonatal mortality	Yes	30		50.85	0		0.00	56.219	< 0.001*
Need for respiratory support	No	0		0.00	88		100.00	147.000	< 0.001*
	Noninvasive	29		49.15	0		0.00
	Mechanical ventilation	30		50.85	0		0.00

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