Overview
11 DESCRIPTION Each 10 mL vial contains a sterile, non-pyrogenic, lyophilized mixture of: Tetrakis (2-methoxy isobutyl isonitrile) Copper (I) tetrafluoroborate - 1 mg Sodium Citrate Dihydrate - 2.6 mg L-Cysteine Hydrochloride Monohydrate - 1 mg Mannitol - 20 mg Stannous Chloride, Dihydrate, minimum (SnCl 2 2H 2 O) - 0.025 mg Stannous Chloride, Dihydrate (SnCl 2 2H 2 O) - 0.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Technetium Tc 99m Sestamibi is a cationic Tc 99m complex which has been found to accumulate in viable myocardial tissue in a manner analogous to that of thallous chloride TI-201. Scintigraphic images obtained in humans after the intravenous administration of the drug have been comparable to those obtained with thallous chloride TI-201 in normal and abnormal myocardial tissue. Animal studies have shown that myocardial uptake is not blocked when the sodium pump mechanism is inhibited. Although studies of subcellular fractionation and electron micrographic analysis of heart cell aggregates suggest that Tc 99m Sestamibi cellular retention occurs specifically within the mitochondria as a result of electrostatic interactions, the clinical...
Indications
- 1 INDICATIONS AND USAGE Myocardial Imaging: Kit for the preparation of Technetium Tc 99m Sestamibi Injection is a myocardial perfusion agent that is indicated for detecting coronary artery disease by localizing myocardial ischemia (reversible defects) and infarction (non-reversible defects), in evaluating myocardial function and developing information for use in patient management decisions. Technetium Tc 99m Sestamibi evaluation of myocardial ischemia can be accomplished with rest and cardiovascular stress techniques (e.g.
Common Doses
- 3 mL
- 1 mL
Dosage
2 DOSAGE AND ADMINISTRATION For Myocardial Imaging: The suggested dose range for I.V. administration of Technetium Tc 99m Sestamibi in a single dose to be employed in the average patient (70 kg) is 370 to 1110 MBq (10 to 30 mCi). For Breast Imaging: The recommended dose range for I.V. administration of Technetium Tc 99m Sestamibi is a single dose of 740 to 1110 MBq (20 to 30 mCi). For Myocardial Imaging: The suggested dose range for I.V. administration of Technetium Tc 99m Sestamibi in a single dose to be employed in the average patient (70 kg) is 370 to 1110 MBq (10 to 30 mCi) ( 2 ).
Contraindications
- 4 CONTRAINDICATIONS None known. None known ( 4 ).
Side Effects
- 6 ADVERSE REACTIONS Adverse events were evaluated in 3741 adults who were evaluated in clinical studies. Of these patients, 3068 (77% men, 22% women, and 0.7 % of the patients' genders were not recorded) were in cardiac clinical trials and 673 (100% women) in breast imaging trials. Cases of angina, chest pain, and death have occurred [ see Warning and Precautions ( 5.1 ) ]. Adverse events reported at a rate of 0.5% or greater after receiving Technetium Tc 99m Sestamibi administration are shown in the following table: Table 2. Selected Adverse Events Reported in > 0.
Interactions
- 7 DRUG INTERACTIONS Specific drug-drug interactions have not been studied. Specific drug-drug interactions have not been studied ( 7 ).