Table 4: Definitions, evaluation and classification of hypertensive disorders in pregnancy / CMAJ

Definitions, evaluation and classification of hypertensive disorders in pregnancy

Table 4: Definitions related to hypertensive disorders in pregnancy and diagnostic criteria recommended by the Canadian Hypertension Society (CHS) and other international bodies*

Definition/criterion CHS NHBPEPWG WHO ISSH ASSH ACOG

Hypertension, mm Hg Diastolic pressure (DP) >= 90 Blood pressure (BP) >= 140/90 or rise in systolic pressure (SP) of >= 30 and in DP of >= 15 DP >= 90 DP >= 90 DP >= 90 and/or SP >= 140, or rise in SP of >= 25 and in DP of >= 15 DP >= 90 or SP >= 140

Severe hypertension, mm Hg DP >= 110 DP >= 110 or SP >= 160 DP 110 SP >= 160 DP >= 110 DP >= 110 and/or SP >= 170 DP >= 110
SP >= 160-180

Korotkoff sound IV V IV IV IV --

Severe proteinuria (protein excretion in 24hour urine collection, g/d) >= 3 >= 2 -- >= 3 0.3 or positive dipstick result of >= 2+ > 5

*NHBEPWG = National High Blood Pressure Education Program Working Group (US), WHO = World Health Organization, ISSH = International Society for Study of Hypertension, ASSH = Australian Society for Study of Hypertension, ACOG = American College of Obstetricians and Gynecologists.

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| CMAJ September 15, 1997 (vol 157, no 6) / JAMC le 15 septembre 1997 (vol 157, no 6) |

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Table 4: Definitions related to hypertensive disorders in pregnancy and diagnostic criteria recommended by the Canadian Hypertension Society (CHS) and other international bodies*
Definition/criterion	CHS	NHBPEPWG	WHO	ISSH	ASSH	ACOG
Hypertension, mm Hg	Diastolic pressure (DP) >= 90	Blood pressure (BP) >= 140/90 or rise in systolic pressure (SP) of >= 30 and in DP of >= 15	DP >= 90	DP >= 90	DP >= 90 and/or SP >= 140, or rise in SP of >= 25 and in DP of >= 15	DP >= 90 or SP >= 140
Severe hypertension, mm Hg	DP >= 110	DP >= 110 or SP >= 160	DP 110 SP >= 160	DP >= 110	DP >= 110 and/or SP >= 170	DP >= 110 SP >= 160-180
Korotkoff sound	IV	V	IV	IV	IV	--
Severe proteinuria (protein excretion in 24hour urine collection, g/d)	>= 3	>= 2	--	>= 3	0.3 or positive dipstick result of >= 2+	> 5
*NHBEPWG = National High Blood Pressure Education Program Working Group (US), WHO = World Health Organization, ISSH = International Society for Study of Hypertension, ASSH = Australian Society for Study of Hypertension, ACOG = American College of Obstetricians and Gynecologists.