Table 4.

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

Parameter	3 mo						P Value
	Stent STK, n=10	Stent CLK, n=10	P Value Stent	Medical STK, n=20	Medical CLK, n=20	P Value Medical	3 mo Versus Baseline Stent STK	3 mo Versus Baseline Stent CLK	3 mo Versus Baseline Medical STK	3 mo Versus Baseline Medical CLK
CT single–kidney volume total, cm3	148.1±43.6	151.8±51.8	0.80	93.5±37.4a	144.8±42.7	<0.001	0.09	0.20	0.01	0.06
Single–kidney blood flow, ml/min	320.8±175.3	334.7±202.1	0.80	191.4±130.7b	367.9±183.6	<0.001	0.08	0.40	0.06	0.30
Single-kidney GFR, ml/min	34.3±15.7	36.6±19.5	0.70	21.4±13.4c	38.1±13.2	<0.001	0.20	0.03	0.06	0.70
Single-kidney R2*, 1/s	22.4±4.1	21.5±2	0.46	22.2±3.9	21.3±2.5	0.35	0.03	0.30	0.70	0.50
Cortex R2*, 1/s	19.8±3.1	19.2±3	0.30	20.7±5	18.9±2.3	0.20	0.10	0.20	0.70	0.20
Fractional hypoxia, % R2* >30%	14.9±18.3	10.7±7.1	0.40	15.2±17.2	10.8±6.8	0.20	<0.01	0.90	0.30	0.80

				P Value Stent Versus Medical Group	Stent Group 3 mo Versus Baseline	Medical Group 3 mo Versus Baseline
Patient total iothalamate Cl, ml/min	70.9±32.1		60.9±23	0.50	0.20	0.50

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

^aP value =0.004 medical STK versus stent STK at 3 months.

^bP value =0.01 medical STK versus stent STK at 3 months.

^cP value =0.03 medical STK versus stent STK at 3 months.