MAG3 RENAL SCAN
Your doctor has recommended that you undergo a test in the Nuclear Medicine Department called a MAG3 Renal Scan. The information gained from this test will be important in the diagnosis and treatment of the medical problem you may have.
What Is A Mag3 Scan?
Nuclear Imaging has been used for decades to look at anatomy and physiology of the body. Unlike X-ray, which shoots radiation through your body onto a piece of film, nuclear images are obtained by measuring the amount of radiation given off by your body after you have been injected with a very short-lived radioisotope.
Your doctor has ordered a MAG 3 Renal Scan which help to evaluate the function of your kidneys when you have high blood pressure (hypertension).
Is There Any Preparation For A Renal Mag 3 Scan?
You will be asked to have nothing to eat for at least 4 hours prior to the test. You will be allowed to have liquids. You will be asked to hold any anti-hypertensive medications (blood pressure medications) such as:
Cozaar Lotensin Altace Monopril
Accupril Zestril Vasotec Capoten
PLEASE ASK YOUR PHYSICIAN IF YOU HAVE ANY QUESTIONS CONCERNING YOUR MEDICATIONS
Will It Hurt?
No, the most uncomfortable part of the study will be the insertion of a Foley Catheter into your bladder. This Catheter is necessary so we can monitor your fluid levels and also reduce the discomfort of having to lie still with a full bladder. You will be given different 2 different medications by the nurse during the study called Lasix and Vasotec. Both of these medications are diuretics which will empty your kidneys and could possibly lower your blood pressure. Your blood pressure and fluid intake and output will be monitored frequently by the Nurse.
How Long Will The Mag 3 Scan Take?
The scan will take approximately 3-4 hours. You will be lying on a bed with the camera underneath. We will try and make you as comfortable as possible.
Are There Any Side Effects From The Injections?
There are no side effects from the radioactive material. The radioactive material used is not a dye or a contrast study so there is no chance for a reaction. The 2 medications given (Lasix and Vasotec) can cause a drop in blood pressure, fluid overload and possibly an allergic reaction. The Technologist and Nurse will explain any possible side effects.
Who Will Read The Scan?
A Radiologist will read the scan and will send a report to your physician.
Are There Any Restrictions After The Scan?
Because of the changes in fluid balance caused by this study, we advise you to rest and drink liquids for the next few hours. Please resume your normal diet. If you experience any unusual weakness or chest pain, have someone bring you to the emergency room immediately.
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