表 2. The changes of PAC, ARR, PRA before and after CCT.

两组受试者卡托普利试验前后各项指标的变化

Index	EH group			PA group (n=125)
	Total (n=59)	NREH group (n=38)	LREH group (n=21)
PA: Primary aldosteronism; EH: Essential hypertension; NREH: Normal renin primary hypertension; LREH: Low renin primary hypertension; ARR: Aldosterone renin activity ratio; PAC: Plasma aldosterone concentration; PRA: Plasma renin activity; CCT: Captopril challenge test. * Median (P25, P75). a P<0.05, bP<0.017, vs. PA group; cP<0.017, vs. NREH group.
PAC*/(ng·dL−1)
Pre-CCT	18.0 (14.9, 24.5)a	20.0 (14.8, 24.5)b	16.7 (14.2, 24.2)b	28.5 (22.6, 36.7)
Post-CCT	14.4 (11.4, 17.4)a	15.4 (11.3, 17.9)b	14.1 (11.3, 16.3)b	23.6 (19.8, 32.2)
PRA*/(ng·mL−1·h−1)
Pre-CCT	0.55 (0.22, 1.40)a	0.96 (0.53, 1.64)b	0.19 (0.10, 0.32)c	0.12 (0.10, 0.33)
Post-CCT	1.54 (0.31, 3.23)a	2.10 (1.31, 3.62)b	0.23 (0.11, 0.47)c	0.20 (0.10, 0.64)
ARR*/((ng·dL−1)/(ng·mL−1·h−1))
Pre-CCT	29.7 (14.5, 87.9)a	16.1 (12.8, 30.4)b	96.2 (69.6, 160.7)c	204.0 (96.0, 407.3)
Post-CCT	10.9 (5.5, 45.9)a	6.3 (4.3, 14.0)b	62.5 (32.2, 101.2)c	125.1 (44.6, 277.5)
PAC suppression rate*/(%)	0.190 (0.083, 0.351)a	0.205 (0.084, 0.356)b	0.190 (0.068, 0.382)	0.125 (0.024, 0.237)