Aminosyn-pf

Aminosyn-pf

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Questions & Answers

Side Effects & Adverse Reactions

Safe, effective use of parenteral nutrition requires a knowledge of nutrition as well as clinical expertise in recognition and treatment of the complications which can occur. FREQUENT EVALUATION AND LABORATORY DETERMINATIONS ARE NECESSARY FOR PROPER MONITORING OF PARENTERAL NUTRITION. Studies should include blood sugar, serum proteins, kidney and liver function tests, electrolytes, hemogram, carbon dioxide content, serum osmolalities, blood cultures, and blood ammonia levels.

Administration of amino acids in the presence of impaired renal function or gastrointestinal bleeding may augment an already elevated blood urea nitrogen. Patients with azotemia from any cause should not be infused with amino acids without regard to total nitrogen intake.

Administration of intravenous solutions can cause fluid and/or solute overload resulting in dilution of serum electrolyte concentrations, overhydration, congested states, or pulmonary edema. The risk of dilutional states is inversely proportional to the electrolyte concentrations of the solutions.

Administration of amino acid solutions to a patient with hepatic insufficiency may result in plasma amino acid imbalances, hyperammonemia, prerenal azotemia, stupor and coma.

Hyperammonemia is of special significance in infants, as its occurrence in the syndrome caused by genetic metabolic defects is sometimes associated, although not necessarily in a causal relationship, with mental retardation. This reaction appears to be dose-related and is more likely to develop during prolonged therapy. It is essential that blood ammonia be measured frequently in infants.

Conservative doses of amino acids should be given, dictated by the nutritional status of the patient. Should symptoms of hyperammonemia develop, amino acid dosage levels should be reduced and titrated against serum ammonia levels.

WARNING: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

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.

Legal Issues

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FDA Safety Alerts

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Manufacturer Warnings

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FDA Labeling Changes

There are currently no FDA labeling changes available for this drug.

Uses

Aminosyn-PF 7%, Sulfite-Free, (an amino acid injection — pediatric formula) is indicated for the nutritional support of infants (including those of low birth weight) and young children requiring TPN via either central or peripheral infusion routes. Parenteral nutrition with Aminosyn-PF 7% is indicated to prevent nitrogen and weight loss or treat negative nitrogen balance in infants and young children where (1) the alimentary tract by the oral gastrostomy, or jejunostomy route, cannot or should not be used or adequate protein intake is not feasible by these routes, (2) gastrointestinal absorption of protein is impaired; or (3) protein requirements are substantially increased as with extensive burns. Dosage, route of administration, and concomitant infusion of non-protein calories are dependent on various factors, such as nutritional and metabolic status of the patient, anticipated duration of parenteral nutrition support, and vein tolerance. See DOSAGE AND ADMINISTRATION for additional information.

Central Venous Infusion

Central venous infusion should be considered when amino acid solutions are to be admixed with hypertonic dextrose to promote protein synthesis in hypercatabolic or severely depleted infants or those requiring long-term parenteral nutrition.

Peripheral Parenteral Nutrition

For moderately catabolic or depleted patients in whom the central venous route is not indicated, diluted amino acid solutions mixed with 5 to 10% dextrose solutions may be infused by peripheral vein, supplemented, if desired, with fat emulsion.

History

There is currently no drug history available for this drug.

Other Information

Aminosyn®-PF 7%, Sulfite-Free, (an amino acid injection — pediatric formula) is a sterile, nonpyrogenic solution for intravenous infusion. Aminosyn®-PF 7% is oxygen sensitive. The formulation is described below:

Aminosyn-PF 7%

An Amino Acid Injection — Pediatric Formula

Essential Amino Acids (mg/100 mL)

Isoleucine

534

Leucine

831

Lysine (acetate)*

475

Methionine

125

Phenylalanine

300

Threonine

360

Tryptophan

125

Valine

452

* Amount cited is for lysine alone and does not include the acetate salt.

Nonessential Amino Acids (mg/100 mL)

Alanine

490

Arginine

861

L-Aspartic Acid

370

L-Glutamic Acid

576

Glycine

270

Histidine

220

Proline

570

Serine

347

Taurine

50

Tyrosine

44

Electrolytes (mEq/L)

Sodium (Na+) (mEq/L)

None

Potassium (K+) (mEq/L)

None

Chloride (Clˉ) (mEq/L)

None

Acetate (C2H3O2ˉ)a (mEq/L)

32.5

a From lysine acetate.

Product Characteristics

Protein Equivalent (Approx. grams/L)

70

Total Nitrogen (grams/L)

10.69

Osmolarity (mOsmol/L)

561

pH (range)

5.5 (5.0 to 6.5)

The formulas for the individual amino acids present in Aminosyn-PF 7% are as follows:

Essential Amino Acids

Isoleucine, USP

C6H13NO2

Leucine, USP

C6H13NO2

Lysine Acetate, USP

C6H14N2O2 • CH3COOH

Methionine, USP

C5H11NO2S

Phenylalanine, USP

C9H11NO2

Threonine, USP

C4H9NO3

Tryptophan, USP

C11H12N2O2

Valine, USP

C5H11NO2

Nonessential Amino Acids

Alanine, USP

C3H7NO2

Glycine, USP

C2H5NO2

Arginine, USP

C6H14N4O2

L-Aspartic Acid

C4H7NO4

HO2CCH2CH(NH2)CO2H

L-Glutamic Acid

C5H9NO4

HO2CCH2CHCH(NH2)CO2H

Histidine, USP

C6H9N3O2

Proline, USP

C5H9NO2

Serine, USP

C3H7NO3

Taurine

C2H7NO3S

Tyrosine, USP

C9H11NO3

The flexible plastic container is fabricated from a specially formulated polyvinylchloride. Water can permeate from inside the container into the overwrap but not in amounts sufficient to affect the solution significantly.

Solutions in contact with the plastic container may leach out certain chemical components from the plastic in very small amounts; however, biological testing was supportive of the safety of the plastic container materials.

Exposure to temperatures above 25°C/77°F during transport and storage will lead to minor losses in moisture content. Higher temperatures lead to greater losses. It is unlikely that these minor losses will lead to clinically significant changes within the expiration period.

Aminosyn-pf Manufacturers


  • Hospira, Inc.
    Aminosyn-pf (Isoleucine, Leucine, Lysine Acetate, Methionine, Phenylalanine, Threonine, Tryptophan, Valine, Alanine, Arginine, Aspartic Acid, Glutamic Acid, Glycine, Histidine, Proline, Serine, Taurine, And Tyrosine) Injection, Solution [Hospira, Inc.]
  • Hospira, Inc.
    Aminosyn-pf (Isoleucine, Leucine, Lysine Acetate, Methionine, Phenylalanine, Threonine, Tryptophan, Valine, Alanine, Arginine, Aspartic Acid, Glutamic Acid, Glycine, Histidine, Proline, Serine, Taurine, And Tyrosine) Injection, Solution [Hospira, Inc.]

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