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Plenamine
Overview
What is Plenamine?
Plenamine™ 15% Amino Acids Injection in a Pharmacy Bulk Package is a sterile, clear, nonpyrogenic solution of essential and nonessential amino acids for intravenous infusion in parenteral nutrition following appropriate dilution.
Plenamine™ 15% in a Pharmacy Bulk Package is not for direct infusion. It is a sterile dosage form which contains several single doses for use in a pharmacy admixture program in the preparation of intravenous parenteral fluids.
Each 100 mL contains:
The formulas for the individual amino acids are as follows:
What does Plenamine look like?
What are the available doses of Plenamine?
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What should I talk to my health care provider before I take Plenamine?
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How should I use Plenamine?
Plenamine™ 15% is indicated as an amino acid (nitrogen) source in parenteral nutrition regimens. This use is appropriate when the enteral route is inadvisable, inadequate or not possible, as when:
— Gastrointestinal absorption is impaired by obstruction, inflammatory disease or its complications, or antineoplastic therapy;
— Bowel rest is needed because of gastrointestinal surgery or its complications such as ileus, fistulae or anastomotic leaks;
— Tube feeding methods alone cannot provide adequate nutrition.
The appropriate daily dose of amino acids to be used with dextrose or with dextrose and intravenous fat emulsion will depend upon the metabolic status and clinical response of the patient as therapy proceeds. Doses which achieve nitrogen equilibrium or positive balance are the most desirable. The dosage on the first day should be approximately half the anticipated optimal dosage and should be increased gradually to minimize glycosuria; similarly, withdrawal should be accomplished gradually to avoid rebound hypoglycemia.
Fat emulsion coadministration should be considered when prolonged (more than 5 days) parenteral nutrition is required in order to prevent essential fatty acid deficiency (EFAD). Serum lipids should be monitored for evidence of EFAD in patients maintained on fat free TPN.
The amount administered is dosed on the basis of amino acids/kg of body weight/day. In general, two to three g/kg of body weight for neonates and infants with adequate calories are sufficient to satisfy protein needs and promote positive nitrogen balance. In pediatric patients, the final solution should not exceed twice normal serum osmolarity (718 mOsmol/L).
What interacts with Plenamine?
This solution should not be used in patients in hepatic coma, severe renal failure, metabolic disorders involving impaired nitrogen utilization or hypersensitivity to one or more amino acids.
What are the warnings of Plenamine?
Cases of tinnitus and reversible or irreversible hearing impairment and deafness have been reported. Reports usually indicate that furosemide ototoxicity is associated with rapid injection, severe renal impairment, the use of higher than recommended doses, hypoproteinemia or concomitant therapy with aminoglycoside antibiotics, ethacrynic acid, or other ototoxic drugs. If the physician elects to use high dose parenteral therapy, controlled intravenous infusion is advisable (for adults, an infusion rate not exceeding 4 mg furosemide per minute has been used) (See PRECAUTIONS: Drug Interactions
Administration of amino acids solutions at excessive rates or to patients with hepatic insufficiency may result in plasma amino acid imbalances, hyperammonemia, prerenal azotemia, stupor and coma. Conservative doses of amino acids should be given to these patients, dictated by the nutritional status of the patient. Should symptoms of hyperammonemia develop, amino acid administration should be discontinued and the patient's clinical status re-evaluated.
Contains sodium metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low.
Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.
WARNING:
Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.
What are the precautions of Plenamine?
A. General
It is essential to provide adequate calories concurrently if parenterally administered amino acids are to be retained by the body and utilized for protein synthesis.
The administration of Plenamine™ 15% Amino Acids Injection as part of total parenteral nutrition (TPN) with large volumes of hyperosmotic fluids requires periodic monitoring of the patient for signs of hyperosmolarity, hyperglycemia, glycosuria and hypertriglyceridemia.
During parenteral nutrition with concentrated dextrose and amino acids solutions, essential fatty acid deficiency syndrome may develop but may not be clinically apparent. Early demonstration of this condition can only be accomplished by gas liquid chromatographic analysis of plasma lipids. The syndrome may be prevented or corrected by appropriate treatment with intravenous fat emulsions.
For complete nutritional support, TPN regimens must also include multiple vitamins and trace elements. Potentially incompatible ions such as calcium and phosphate may be added to alternate infusate bottles to avoid precipitation. Although the metabolizable acetate ion in Plenamine™ 15% diminishes the risk of acidosis, the physician must be alert to the potential appearance of this disorder.
Initiation and termination of infusions of TPN fluids must be gradual to permit adjustment of endogenous insulin release.
Undiluted Plenamine™ 15% should not be administered peripherally. When administered centrally, it should be diluted with appropriate diluents, e.g., dextrose, electrolytes and other nutrient components, to at least half strength. (See )
Caution against volume overload should be exercised.
Drug product contains no more than 25 mcg/L of aluminum.
B. Laboratory Tests
Infusion of Plenamine™ 15% without concomitant infusion of an adequate number of non-protein calories may result in elevated BUN. Monitoring of BUN is required and the balance between Plenamine™ 15% and the calorie source may require adjustment. Frequent clinical evaluations and laboratory determinations are required to prevent the complications which may occur during the administration of solutions used in TPN. Laboratory tests should include blood glucose, serum electrolytes, liver and kidney function, serum osmolarity, blood ammonia, serum protein, pH, hematocrit, WBC and urinary glucose. When Plenamine™ 15% is combined with electrolytes, care should be used in administering this solution to patients with congestive heart failure, renal failure, edema, adrenal hyperactivity, acid-base imbalance and those receiving diuretics or antihypertensive therapy. Total volume infused should be closely monitored. Serum electrolytes should be monitored daily in these patients.
C. Carcinogenesis, Mutagenesis, Impairment of Fertility
Studies with Plenamine™ 15% have not been performed to evaluate carcinogenic potential, mutagenic potential, or effects on fertility.
D. Pregnancy Category C
Animal reproduction studies have not been conducted with Plenamine™ 15% It is also not known whether Plenamine™ 15% can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Plenamine™ 15% should be given to a pregnant woman only if clearly needed.
E. Nursing Mothers
Caution should be exercised when Plenamine™ 15% is administered to a nursing woman.
F. Pediatric Use
Safety and effectiveness of Plenamine™ 15% Amino Acids Injection in pediatric patients have not been established by adequate and well-controlled studies. However, the use of amino acids injections in pediatric patients as an adjunct in the offsetting of nitrogen loss or in the treatment of negative nitrogen balance is referenced in the medical literature.
G. Special Precautions for Central Infusion
TPN delivered by indwelling catheter through a central or large peripheral vein is a special technique requiring a team effort by physician, nurse and pharmacist. The responsibility for administering this therapy should be confined to those trained in the procedures and alert to signs of complications. Complications known to occur from the placement of central venous catheter are pneumothorax, hemothorax, hydrothorax, artery puncture and transection, injury to the brachial plexus, malposition of the catheter, formation of arteriovenous fistula, phlebitis, thrombosis, and air/catheter emboli. The risk of sepsis is present during intravenous therapy, especially when using central venous catheters for prolonged periods. It is imperative that the preparation of admixtures and the placement and care of the catheters be accomplished under controlled aseptic conditions.
H. Admixtures
Admixtures should be prepared under a laminar flow hood using aseptic technique.
Admixtures should be stored under refrigeration and must be administered within 24 hours after removal from refrigerator.
Filters of less than 1.2 micron pore size must not be used with admixtures containing fat emulsion.
I. Use only if bottle and seal are undamaged and solution is clear with vacuum present.
IT IS ESSENTIAL THAT A CAREFULLY PREPARED PROTOCOL, BASED ON CURRENT MEDICAL PRACTICES, BE FOLLOWED, PREFERABLY BY AN EXPERIENCED TEAM.
What are the side effects of Plenamine?
(See and .)
What should I look out for while using Plenamine?
This solution should not be used in patients in hepatic coma, severe renal failure, metabolic disorders involving impaired nitrogen utilization or hypersensitivity to one or more amino acids.
Administration of amino acids solutions at excessive rates or to patients with hepatic insufficiency may result in plasma amino acid imbalances, hyperammonemia, prerenal azotemia, stupor and coma. Conservative doses of amino acids should be given to these patients, dictated by the nutritional status of the patient. Should symptoms of hyperammonemia develop, amino acid administration should be discontinued and the patient's clinical status re-evaluated.
Contains sodium metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low.
Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.
WARNING:
Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.
What might happen if I take too much Plenamine?
In the event of overhydration or solute overload, re-evaluate the patient and institute appropriate corrective measures. (See and .)
How should I store and handle Plenamine?
Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. The USP defines controlled room temperature as a temperature maintained thermostatically that encompasses the usual and customary working environment of 20° to 25°C (68° to 77°F); that results in a mean kinetic temperature calculated to be not more than 25°C; and that allows for excursions between 15° and 30°C (59° and 86°F) that are experienced in pharmacies, hospitals, and warehouses.Plenamine™ 15% Amino Acids Injection is supplied sterile and nonpyrogenic in glass containers, Pharmacy Bulk Packages, packaged 6 per case.
