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Lab Tests |
Electrocardiogram |
Chest X-Ray |
Echocardiogram |
24hr. ABP |
Catecholamines |
Angiogram |
CT Scan |
MRI Scan |
MRA |
Carotid Ultrasound |
Renal Ultrasound |
Captopril |
Renal Scan |
 Captopril Renal Scan |
Renal Vein Renin Test
Captopril Renal Scan (Renogram)
Captopril is a blood pressure
lowering medication which has a specific effect on kidney function. In normal kidneys
it produces a slight increase in the rate of urine formation, but in kidneys with a
blocked artery it decreases it. The captopril scan makes use of this phenomenon, and
is sometimes performed by comparing two kidney scans, one done before and one after
captopril is given (typically one hour after a single dose). If there is a blocked
artery, the second scan show a deterioration of function in the affected kidney in
when compared with the first scan. More commonly, a single scan is done after taking
the captopril.
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