Table 3. Placental Pathology Results, by HIV Status and ARV Exposure, Botswana.

Placental Pathology	HIV+ HAART in pregnancy (N = 26)	HIV+ ZDV in pregnancy (N = 14)	HIV+ No ARVs in pregnancy (N = 22)	HIV- (N = 37)
Chronic placental insufficiency	17 (65%)§	6 (43%)§	4 (18%)§	20 (54%)
Acute placental insufficiency*	1 (4%)	1 (7%)	6 (27%)	3 (8%)
Infection	4 (15%)	3 (21%)	6 (27%)	8 (22%)
Other§	2 (8%)	2 (14%)	0 (0%)	3 (8%)
Unknown	2 (8%)	2 (14%)	6 (27%)	3 (8%)

*4 women with both acute and chronic placental insufficiency were categorized as chronic.

^§Other = maternal floor infarct (2), hydrops fetalis (2), villous maturational arrest (1), massive chronic intervillositis/villitis of unknown/unclear etiology (1), massive perivillous fibrin (1).