Physiological Uterine Involution in Primiparous and Multiparous Women: Ultrasound Study

Table 4

Changes of RI (resistance index) during puerperium (median values ± standard deviation).

Days	1	3	10	30	42	60
Primiparous	0.54 ± 0,14	0.56 ± 0.10	0.61 ± 0.09	0.69 ± 0.08	0.76 ± 0.09	0.75 ± 0.08
Multiparous	0.63 ± 0,09	0.65 ± 0.08	0.67 ± 0.13	0.75 ± 0.09	0.80 ± 0.07	0.77 ± 0.09
	0.006	0.001	0.004	0.182	0.049	1.000