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Hypertensive Renogram

What to Expect During the Procedure

You will lie on the table on your back. After starting an IV in your hand or arm, a radioactive tracer is injected. Following the tracer injection, a diuretic (Lasix) is administered to promote kidney drainage. Baseline images are acquired continuously for approximately 30 minutes. Upon completion, an ace inhibitor (Vasotec) is injected. A second dose of the radioactive tracer is injected and images are again acquired for 30 minutes. Our procedure is usually complete in approximately 90 minutes. We monitor blood pressure response throughout the exam. Our onsite Radiologist compares the two exams to determine the effect of the ace inhibitor on renal function. During the Vasotec injection, you may experience a drop in blood pressure causing weakness or faint feeling. We apologize but this will subside quickly.

How Should I Prepare?
  • Hydrate well prior to this procedure.
  • No diuretic medication or caffeine are to be taken or consumed 24 hours prior to this scan.
  • Please discontinue ace inhibitor blood pressure medications 72 hours prior to this exam unless otherwise instructed by your physician.
What to Expect After the Procedure

Hydrate well for 24 hours following this procedure. Also, no driver is needed following this procedure. Reports will be sent to your physician within 5 business days. Contact your physician for any information pertaining to the findings.