Table 5.

Neonatal treatment according to the risk group

	Clinically nonsignificant antibodies (n = 65)	Clinically significant antibodies
		Compatible or negative fetal antigen (n = 63)	Titer < 1:16 (n = 38)	Titer > 1:16, Normal MCA-PSV (n = 90)	Titer > 1:16, Abnormal MCA-PSV (n = 48)
	Low risk		High risk
Phototherapy	2/65 (3.1%)	1/63 (1.6%)	1/38 (2.6%)	53/90 (58.9%)	47/48 (97.9%)
Immunoglobulin therapy	0/64	0/62	0/38	25/90 (27.8%)	22/31 (71.0%)
Transfusion	0/64	0/63	0/38	11/90 (12.2%)	24/41 (58.5%)
Exchange transfusion	0/65	0/63	0/38	14/90 (15.6%)	27/48 (56.3%)

MCA-PSV Middle cerebral artery peak systolic velocity