Table 3.

Measurements of individual kidney volume, hemodynamics, oxygenation, GFR, and overall iothalamate clearance before revascularization or medical therapy alone

Parameter	Baseline							P Value
	Stent STK, n=10	Stent CLK, n=10	P Value Stent	Medical STK, n=20	Medical CLK, n=20	P Value Medical	EH, n=32	Stent STK Versus Medical STK	EH Versus Stent STK	EH Versus Medical STK
CT single–kidney volume total, cm3	133.4±43.3	166.1±50	0.02	97.5±39.4	149.3±44	<0.001	141.4±43.7	0.12	0.58	0.002
Single–kidney blood flow, ml/min	253±123.3	377±159	0.02	227.6±149.7	349.9±151.4	<0.001	399.2±174.2	0.66	0.04	<0.001
Single-kidney GFR, ml/min	30.5±17.7	43.6±19.7	0.02	24±12	39.1±14	0.03	44.3±13.6	0.60	0.04	<0.001
Single-kidney R2*, 1/s	24.7±6.2	20.9±2.1	0.04	21.6±3.6	20.8±3	0.08	21±2.4	0.40	0.15	0.99
Cortex R2*, 1/s	21.6±6	18.4±3.2	0.01	19.8±3.9	18±3	0.02	18.5±2.7	0.52	0.09	0.39
Fractional hypoxia, % R2* >30%	22.1±20	10.8±6	0.02	14.1±12.6	10.6±12.3	0.04	9.6±7	0.26	0.03	0.19

						Stent Versus Medical	EH Versus Stent	EH Versus Medical
Patient total iothalamate Cl, ml/min	74±34.8		62.6±21.8		87.9±24.3	0.80	0.30	0.003

Data are means±SDs. STK, stenotic kidney; CLK, contralateral kidney; EH, essential hypertension; CT, computed tomography; Cl, clearance.