Definitions, evaluation and classification of hypertensive disorders in pregnancy
| Table 5: Classifications of hypertensive disorders in pregnancy proposed by the CHS and other international bodies | |||||
| CHS | NHBPEPWG | WHO | ISSH | ASSH | ACOG |
| Pre-existing hypertension (HT), essential/secondary | Chronic HT | Pre-existing HT, renal HT and/or proteinuria in pregnancy; underlying HT or renal disease | Chronic HT Chronic renal disease | Chronic HT, essential/secondary | Chronic HT |
| Gestational HT without proteinuria, with or without adverse conditions | Transient HT | Gestational HT Gestational proteinuria | Gestational HT Gestational proteinuria | -- | Pregnancy-induced HT (includes pre-eclampsia, eclampsia and HELLP syndrome) |
| Gestational HT with proteinuria, with or without adverse conditions | Pre-eclampsia/ eclampsia | Pre-eclampsia/ eclampsia | Gestational proteinuric HT | Pre-eclampsia, mild/severe | -- |
| Pre-existing HT + superimposed gestational HT with proteinuria | Pre-eclampsia superimposed on chronic HT | Superimposed preeclampsia | Chronic HT with superimposed preeclampsia | Preeclampsia superimposed on chronic HT | Chronic HT with superimposed pregnancy-induced HT |
| Unclassifiable antenatally | -- | Unclassifiable | -- | -- | -- |