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MUSTARGEN, administered intravenously, is indicated for the palliative treatment of Hodgkin's disease (Stages III and IV), lymphosarcoma, chronic myelocytic or chronic lymphocytic leukemia, polycythemia vera, mycosis fungoides, and bronchogenic carcinoma.
MUSTARGEN, administered intrapleurally, intraperitoneally, or intrapericardially, is indicated for the palliative treatment of metastatic carcinoma resulting in effusion.
DOSAGE AND ADMINISTRATION
Not for oral administration
The dosage of MUSTARGEN varies with the clinical situation, the therapeutic response and the magnitude of hematologic depression. A total dose of 0.4 mg/kg of body weight for each course usually is given either as a single dose or in divided doses of 0.1 to 0.2 mg/kg per day. Dosage should be based on ideal dry body weight. The presence of edema or ascites must be considered so that dosage will be based on actual weight unaugmented by these conditions.
The margin of safety in therapy with MUSTARGEN is narrow and considerable care must be exercised in the matter of dosage. Repeated examinations of blood are mandatory as a guide to subsequent therapy. (See OVERDOSAGE.)
Within a few minutes after intravenous injection, MUSTARGEN undergoes chemical transformation, combines with reactive compounds, and is no longer present in its active form in the blood stream. Subsequent courses should not be given until the patient has recovered hematologically from the previous course; this is best determined by repeated studies of the peripheral blood elements awaiting their return to normal levels. It is often possible to give repeated courses of MUSTARGEN as early as three weeks after treatment.
Preparation of Solution for Intravenous Administration
This drug is HIGHLY TOXIC and both powder and solution must be handled and administered with care. (See BOXED WARNING and DOSAGE AND ADMINISTRATION, Special Handling.) Since MUSTARGEN is a powerful vesicant, it is intended primarily for intravenous use, and in most cases is given by this route. Inhalation of dust or vapors and contact with skin or mucous membranes, especially those of the eyes, must be avoided. Appropriate protective equipment should be worn when handling MUSTARGEN. Should accidental eye contact occur, copious irrigation for at least 15 minutes with water, normal saline or a balanced salt ophthalmic irrigating solution should be instituted immediately, followed by prompt ophthalmologic consultation. Should accidental skin contact occur, the affected part must be irrigated immediately with copious amounts of water, for at least 15 minutes while removing contaminated clothing and shoes, followed by 2% sodium thiosulfate solution. Medical attention should be sought immediately. Contaminated clothing should be destroyed. (See DOSAGE AND ADMINISTRATION, Special Handling.)
Each vial of MUSTARGEN contains 10 mg of mechlorethamine hydrochloride triturated with sodium chloride q.s. 100 mg. In neutral or alkaline aqueous solution it undergoes rapid chemical transformation and is highly unstable. Although solutions prepared according to instructions are acidic and do not decompose as rapidly, they should be prepared immediately before each injection since they will decompose on standing. When reconstituted, MUSTARGEN is a clear colorless solution. Do not use if the solution is discolored or if droplets of water are visible within the vial prior to reconstitution.
Using a sterile 10 mL syringe, inject 10 mL of Sterile Water for Injection or 10 mL of 0.9% Sodium Chloride Injection into a vial of MUSTARGEN. With the needle (syringe attached) still in the rubber stopper, shake the vial several times to dissolve the drug completely. The resultant solution contains 1 mg of mechlorethamine hydrochloride per mL.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit.
Animal studies have shown mechlorethamine to be corrosive to skin and eyes, a powerful vesicant, irritating to the mucous membranes of the respiratory tract and highly toxic by the oral route. It has also been shown to be carcinogenic, mutagenic and teratogenic. Due to the drug's toxic properties, appropriate precautions including the use of appropriate safety equipment are recommended for the preparation of MUSTARGEN for parenteral administration. Inhalation of dust or vapors and contact with skin or mucous membranes, especially those of the eyes, must be avoided. Avoid exposure during pregnancy. The National Institutes of Health presently recommends that the preparation of injectable antineoplastic drugs should be performed in a Class II laminar flow biological safety cabinet.17 Personnel preparing drugs of this class should wear chemical resistant, impervious gloves, safety goggles, outer garments and shoe covers. Additional body garments should be used based upon the task being performed (e.g., sleevelets, apron, gauntlets, disposable suits) to avoid exposed skin surfaces and inhalation of vapors and dust. Appropriate techniques should be used to remove potentially contaminated clothing.
Several other guidelines for proper handling and disposal of antineoplastic drugs have been published and should be considered.18- 23
Accidental Contact Measures
Should accidental eye contact occur, copious irrigation for at least 15 minutes with water, normal saline or a balanced salt ophthalmic irrigating solution should be instituted immediately, followed by prompt ophthalmologic consultation. Should accidental skin contact occur, the affected part must be irrigated immediately with copious amounts of water, for at least 15 minutes, followed by 2% sodium thiosulfate solution. Medical attention should be sought immediately. Contaminated clothing should be destroyed. (See PRECAUTIONS, General and DOSAGE AND ADMINISTRATION, Preparation of Solution for Intravenous Administration.)
Technique for Intravenous Administration
Withdraw into the syringe the calculated volume of solution required for a single injection. Dispose of any remaining solution after neutralization (see below). Although the drug may be injected directly into any suitable vein, it is injected preferably into the rubber or plastic tubing of a flowing intravenous infusion set. This reduces the possibility of severe local reactions due to extravasation or high concentration of the drug. Injecting the drug into the tubing rather than adding it to the entire volume of the infusion fluid minimizes a chemical reaction between the drug and the solution. The rate of injection apparently is not critical provided it is completed within a few minutes.
Nitrogen mustard has been used by intracavitary administration with varying success in certain malignant conditions for the control of pleural,4-13 peritoneal,5,6,9,11-16 and pericardial,5,11-13 effusions caused by malignant cells.
The technique and the dose used by any of these routes varies. Therefore, if MUSTARGEN is given by the intracavitary route, the published articles concerning such use should be consulted. Because of the inherent risks involved, the physician should be experienced in the appropriate injection techniques, and be thoroughly aware of the indications, dosages, hazards, and precautions as set forth in the published literature. When using MUSTARGEN by the intracavitary route, the general precautions concerning this agent should be borne in mind.
As a general guide, reference is made especially to the techniques of Weisberger et al.5,11-13 Intracavitary use is indicated in the presence of pleural, peritoneal, or pericardial effusion due to metastatic tumors. Local therapy with nitrogen mustard is used only when malignant cells are demonstrated in the effusion. Intracavitary injection is not recommended when the accumulated fluid is chylous in nature, since results are likely to be poor.
Paracentesis is first performed with most of the fluid being removed from the pleural or peritoneal cavity. The intracavitary use of MUSTARGEN may exert at least some of its effect through production of a chemical poudrage. Therefore, the removal of excess fluid allows the drug to more easily contact the peritoneal and pleural linings. For intrapleural or intrapericardial injection nitrogen mustard is introduced directly through the thoracentesis needle. For intraperitoneal injection it is given through a rubber catheter inserted into the trocar used for paracentesis or through a No. 18 gauge needle inserted at another site. This drug should be injected slowly, with frequent aspiration to ensure that a free flow of fluid is present. If fluid cannot be aspirated, pain and necrosis due to injection of solution outside the cavity may occur.5,11-13 Free flow of fluid also is necessary to prevent injection into a loculated pocket and to ensure adequate dissemination of nitrogen mustard.
The usual dose of nitrogen mustard for intracavitary injection is 0.4 mg/kg of body weight, though 0.2 mg/kg (or 10 to 20 mg) has been used by the intrapericardial route.5,11-13 The solution is prepared, as previously described for intravenous injection, by adding 10 mL of Sterile Water for Injection or 10 mL of 0.9% Sodium Chloride Injection to the vial containing 10 mg of mechlorethamine hydrochloride. (Amounts of diluent of 50 to 100 mL of normal saline have also been used.4, 5) The position of the patient should be changed every 5 to 10 minutes for an hour after injection to obtain more uniform distribution of the drug throughout the serous cavity. The remaining fluid may be removed from the pleural or peritoneal cavity by paracentesis 24 to 36 hours later. The patient should be followed carefully by clinical and x-ray examination to detect reaccumulation of fluid.
Pain occurs rarely with intrapleural use; it is common with intraperitoneal injection and is often associated with nausea, vomiting, and diarrhea of 2 to 3 days duration. Transient cardiac irregularities may occur with intrapericardial injection. Death, possibly accelerated by nitrogen mustard, has been reported following the use of this agent by the intracavitary route.9 Although absorption of MUSTARGEN when given by the intracavitary route is probably not complete because of its rapid deactivation by body fluids, the systemic effect is unpredictable. The acute side effects such as nausea and vomiting are usually mild. Bone marrow depression is generally milder than when the drug is given intravenously. Care should be taken to avoid use by the intracavitary route when other agents which may suppress bone marrow function are being used systemically.
Neutralization of Equipment and Unused Solution
To clean rubber gloves, tubing, glassware, etc., after giving MUSTARGEN, soak them in an aqueous solution containing equal volumes of sodium thiosulfate (5%) and sodium bicarbonate (5%) for 45 minutes. Excess reagents and reaction products are washed away easily with water. Any unused injection solution should be neutralized by mixing with an equal volume of sodium thiosulfate/sodium bicarbonate solution. Allow the mixture to stand for 45 minutes. Vials that have contained MUSTARGEN should be treated in the same way with thiosulfate/bicarbonate solution before disposal.
Trituration of MUSTARGEN is a light yellow brown crystalline powder, each vial containing 10 mg of mechlorethamine hydrochloride with sodium chloride q.s. 100 mg, and is supplied in treatment sets of 4 vials.
Store at controlled room temperature 15-30°C (59-86°F). Protect from light and humidity. Solutions of mechlorethamine HCl decompose on standing; therefore, solutions of the drug should be prepared immediately before use.
4. Bass, B.H.: Nitrogen mustard in the palliation of lung cancer, Brit. Med. J. 1: 617-620, Feb. 27, 1960.
5. Bonte, F.J.; Storaasli, J.P.; Weisberger, A.S.: Comparative evaluation of radioactive colloidal gold and nitrogen mustard in the treatment of serous effusions of neoplastic origin, Radiol. 67: 63-66, July 1956.
6. Fullerton, C.W.; Reed, P.I.: Nitrogen mustard in treatment of pleural and peritoneal effusions, Can. Med. Ass. J. 79: 190-191, Aug. 1, 1958.
7. Harris, M.S.: The use of chemotherapy for carcinoma of the lung, J. Int. Coll. Surg. 34: 666-673, Nov. 1960.
8. Hepper, N.G.G.; Carr, D.T.: Intrapleural use of nitrogen mustard in malignant pleural effusion, Minn.Med. 43: 374-376, June 1960.
9. Levison, V.B.: Nitrogen mustard in palliation of malignant effusions, Brit. Med. J. 1:1143-1145, Apr. 22, 1961.
10.Taylor, L.: A technique for intrapleural administration of nitrogen mustard compounds, Amer. J. Med. Sci. 233: 538-541, May 1957.
11.Weisberger, A.S.: Direct instillation of nitrogen mustard in the management of malignant effusions, Ann. N.Y. Acad. Sci. 68: 1091-1096, Apr. 24, 1958.
12.Weisberger, A.S.; Bonte, F.J.; Suhrland, L.G.: Management of malignant serous effusions, Geriat. 11: 23-30, Jan. 1956.
13. Weisberger, A.S.; Levine, B.; Storaasli, J.P.: Use of nitrogen mustard in treatment of serous effusions of neoplastic origin, J. Amer. Med. Ass. 159: 1704-1707, Dec. 31, 1958.
14. Brown, F.E.; Wright, H.K.: Hypovolemia following intraperitoneal nitrogen mustard therapy, Surg. Gynecol. & Obstet. 121: 528-530, Sept. 1965.
15. Greenwald, E.S.: Cancer chemotherapy, N.Y. Med. J. 66: 2532-2548, Oct. 1, 1966.
16. Rohn, R.J.; Bond, W.H.: Some indications for the use of chemotherapy in neoplastic disorders, J. Ind. Med. Ass. 50: 417-428, Apr. 1957.
17. Recommendations for the Safe Handling of Parenteral Antineoplastic Drugs, NIH Publication No. 83-2621. For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
18. AMA Council Report: Guidelines for Handling Parenteral Antineoplastics, JAMA 253: 1590-1592, 1985.
19. National Study Commission on Cytotoxic Exposure-Recommendations for Handling Cytotoxic Agents. Available from Louis P. Jeffrey, Sc. D., Chairman, National Study Commission on Cytotoxic Exposure, Massachusetts College of Pharmacy and Allied Health Sciences, 179 Longwood Avenue, Boston, Massachusetts 02115.
20. Clinical Oncological Society of Australia: Guidelines and recommendations for safe handling of antineoplastic agents, Med. J. Australia 1: 426-428, 1983.
21. Jones, R.B., et al: Safe handling of chemotherapeutic agents: A report from the Mount Sinai Medical Center, Ca - A Cancer Journal for Clinicians Sept/Oct, 258-263, 1983.
22. American Society of Hospital Pharmacists: Technical assistance bulletin on handling cytotoxic and hazardous drugs, Am. J. Hosp. Pharm. 47: 1033-1049, 1995.
23. Controlling Occupational Exposure to Hazardous Drugs (OSHA Work-Practice Guidelines), Am. J. Health-Syst. Pharm. 53: 1669-1685, 1996.
Manufactured by: Baxter Oncology GmbH, 33790 Halle/Westfalen, Germany. For: Recordati Rare Diseases Inc., Lebanon, NJ 08833, U.S.A. Revised: February 2013This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 9/18/2013
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