Hypertensive disorders in pregnancy

Table 1 Selected renal disorders during pregnancy

Renal disease by trimester
1st trimester	Hyperemesis gravidarum	Worsening of preexisting renal disease
Week 1-12	Cortical necrosis due to septic abortion	↓
	Preeclampsia (> after 20 wk)	↓
	AFLP	↓
2nd trimester	Preeclampsia	↓
Week 13-28	HELLP syndrome	↓
	TTP	↓
3rd trimester	Preeclampsia	↓
Week 29-40	Polyhydramnios	↓
	Extraureteral obstructive hydronephrosis	↓
Post-partum	Post-partum hemolytic uremic syndrome	↓
	Preeclampsia	↓

AFLP: Acute fatty liver of pregnancy; TTP: Thrombotic thrombocytopenic purpura; HELLP: Hemolysis, elevated liver enzymes, and low platelets.