First Pass With Muga

Indication

• This noninvasive procedure permits the evaluation of cardiac function in every type of cardiac disease and the results of barium therapeutic interventions may be assessed.

Radiopharmaceutical

• 25 mCi Tc99m red blood cells tagged in-vivo

Patient Preparation

• Consideration should be given to discontinuing medications such as propranolol 48 hours, nitroglycerin 2 hours, and digoxin 7 days, which may affect ventricular performance and therefore potentially mask abnormalities when clinically not contraindicated.

Contraindications

• Atrial fibrillation

Procedure

• Intravenously inject the patient with appropriate amount of cold pyrophosphate.
• Attach 3 lead ECG gate electrodes to patient.
• Position patient supine underneath gamma camera
• Attach 3-way stopcock with 25 mCi TC04, 10-20cc normal saline flush, and 19-gauge butterfly infusion set.
• Twenty minutes post injection of pyrophosphate; give bolus injection of TCO4 25 mCi.