Assessment of postpartum haemorrhage for placenta accreta: Is measurement of myometrium thickness and dark intraplacental bands using MRI helpful?

Table 5 The correlation between the myometrium thickness grades and dark intraplacental bands volume to the depth of PAS invasion

	Estimated blood loss (ml)	Red blood cell input (u)	Myometrium thickness grades			Dark intraplacental bands volume (mm³)
	Estimated blood loss (ml)	Red blood cell input (u)	G0	G1	G2	Dark intraplacental bands volume (mm³)
Placenta accreta (N = 15)	860.0 ± 671.7	0 (0,0)	6	3	17	242.85 (0, 4869.00)
Placenta increta (N = 44)	1481.8 ± 905.6	2.0 (0,4.0)	20	8	7	4464.60 (0, 14,476.35)
Placenta percreta (N = 16)	2400.0 ± 1479.6	6.9 (4.0,9.5)	11	3	0	26,192.48 (4788.38, 57,547.90)
P value	P < 0.001	P < 0.001	P = 0.126			P = 0.007
Correlation to the depth of PAS invasion	P < 0.001 ρ = 0.493	P < 0.001 ρ = 0.615	–			P = 0.002 ρ = 0.359

PAS placenta accreta spectrum
Normally distributed data: mean value ± standard deviation; Non-normally distributed data: median (first quartile, third quartile)

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