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Phytonadione (Injection, Emulsion)

Source:http://www4.wiwiss.fu-berlin.de/dailymed/resource/drugs/1869

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dailymed-drugs:1869rdfs:labelPhytonadione (Injection, Emulsion)lld:dailymed
dailymed-drugs:1869dailymed-instance:dosageWhenever possible, phytonadione should be given by the subcutaneous route . When intravenous or intramuscular administration is considered unavoidable, the drug should be injected very slowly, not exceeding 1 mg per minute. Protect from light at all times. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.<br/>Directions for Dilution: Phytonadione may be diluted with 0.9% Sodium Chloride Injection, 5% Dextrose Injection, or 5% Dextrose and Sodium Chloride Injection. Benzyl alcohol as a preservative has been associated with toxicity in newborns. Therefore, all of the above diluents should be preservative-free. Other diluents should not be used. When dilutions are indicated, administration should be started immediately after mixture with the diluent, and unused portions of the dilution should be discarded, as well as unused contents of the vial.<br/>Prophylaxis of Hemorrhagic Disease of the Newborn: The American Academy of Pediatrics recommends that vitamin Kbe given to the newborn. A single intramuscular dose of phytonadione 0.5 to 1 mg within one hour of birth is recommended.<br/>Treatment of Hemorrhagic Disease of the Newborn: Empiric administration of vitamin Kshould not replace proper laboratory evaluation of the coagulation mechanism. A prompt response (shortening of the prothrombin time in 2 to 4 hours) following administration of vitamin Kis usually diagnostic of hemorrhagic disease of the newborn, and failure to respond indicates another diagnosis or coagulation disorder. Phytonadione 1 mg should be given either subcutaneously or intramuscularly. Higher doses may be necessary if the mother has been receiving oral anticoagulants. Whole blood or component therapy may be indicated if bleeding is excessive. This therapy, however, does not correct the underlying disorder and phytonadione should be given concurrently.<br/>Anticoagulant-Induced Prothrombin Deficiency in Adults: To correct excessively prolonged prothrombin time caused by oral anticoagulant therapy���2.5 to 10 mg or up to 25 mg initially is recommended. In rare instances 50 mg may be required. Frequency and amount of subsequent doses should be determined by prothrombin time response or clinical condition . If in 6 to 8 hours after parenteral administration the prothrombin time has not been shortened satisfactorily, the dose should be repeated. In the event of shock or excessive blood loss, the use of whole blood or component therapy is indicated.<br/>Hypoprothrombinemia Due to Other Causes in Adults: A dosage of 2.5 to 25 mg or more (rarely up to 50 mg) is recommended, the amount and route of administration depending upon the severity of the condition and response obtained. If possible, discontinuation or reduction of the dosage of drugs interfering with coagulation mechanisms (such as salicylates, antibiotics) is suggested as an alternative to administering concurrent phytonadione. The severity of the coagulation disorder should determine whether the immediate administration of phytonadione is required in addition to discontinuation or reduction of interfering drugs.lld:dailymed
dailymed-drugs:1869dailymed-instance:descripti...Phytonadione is a vitamin, which is a clear, yellow to amber, viscous, odorless or nearly odorless liquid. It is insoluble in water, soluble in chloroform and slightly soluble in ethanol. It has a molecular weight of 450.70. Phytonadione is 2-methyl-3-phytyl-1, 4-naphthoquinone. Its empirical formula is CHand its structural formula is: Phytonadione Injectable Emulsion, USP, is a yellow, sterile, aqueous colloidal solution of vitamin K, with a pH of 3.5 to 7.0. It is available for injection by the intravenous, intramuscular, and subcutaneous routes. Each 0.5 mL contains 1 mg phytonadione (Vitamin K), 10 mg polysorbate 80, 10.4 mg propylene glycol, 0.17 mg sodium acetate anhydrous, and 0.00002 mL glacial acetic acid. Additional glacial acetic acid or sodium acetate anhydrous may have been added to adjust pH to meet USP limits of 3.5 to 7.0. The air above the liquid in the individual containers has been displaced by flushing with nitrogen during the filling operation.lld:dailymed
dailymed-drugs:1869dailymed-instance:clinicalP...Phytonadione aqueous colloidal solution of vitamin Kfor parenteral injection, possesses the same type and degree of activity as does naturally-occurring vitamin K, which is necessary for the production via the liver of active prothrombin (factor II), proconvertin (factor VII), plasma thromboplastin component (factor IX), and Stuart factor (factor X). The prothrombin test is sensitive to the levels of three of these four factors���II, VII, and X. Vitamin K is an essential cofactor for a microsomal enzyme that catalyzes the post-translational carboxylation of multiple, specific, peptide-bound glutamic acid residues in inactive hepatic precursors of factors II, VII, IX, and X. The resulting gamma-carboxyglutamic acid residues convert the precursors into active coagulation factors that are subsequently secreted by liver cells into the blood. Phytonadione is readily absorbed following intramuscular administration. After absorption, phytonadione is initially concentrated in the liver, but the concentration declines rapidly. Very little vitamin K accumulates in tissues. Little is known about the metabolic fate of vitamin K. Almost no free unmetabolized vitamin K appears in bile or urine. In normal animals and humans, phytonadione is virtually devoid of pharmacodynamic activity. However, in animals and humans deficient in vitamin K, the pharmacological action of vitamin K is related to its normal physiological function, that is, to promote the hepatic biosynthesis of vitamin K dependent clotting factors. The action of the aqueous colloidal solution, when administered intravenously, is generally detectable within an hour or two and hemorrhage is usually controlled within 3 to 6 hours. A normal prothrombin level may often be obtained in 12 to 14 hours. In the prophylaxis and treatment of hemorrhagic disease of the newborn, phytonadione has demonstrated a greater margin of safety than that of the water-soluble vitamin K analogues.lld:dailymed
dailymed-drugs:1869dailymed-instance:activeIng...dailymed-ingredient:Phytona...lld:dailymed
dailymed-drugs:1869dailymed-instance:supplyIn unit use packages containing one single dose vial and a SAF-T-Jet���vial injector, 27 G.��1/2" needle. Phytonadione Injection USP, 1 mg in 0.5 mL Stock No. 1240 NDC 0548-1240-00 Twenty-five unit use packages per carton.<br/>Syringe Assembly DirectionsSee User Guide: USE ASEPTIC TECHNIQUE Do not remove from carton or assemble until ready to use. *CAUTION: IMPROPER ENGAGING MAY CAUSE GLASS BREAKAGE AND SUBSEQUENT INJURY. Store at controlled room temperature 15��to 30��C (59��to 86��F) [see USP]. Protect from light.lld:dailymed
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dailymed-drugs:1869dailymed-instance:boxedWarn...WARNING���INTRAVENOUS USE: Severe reactions, including fatalities, have occurred during and immediately after the parenteral administration of Phytonadione. Typically these severe reactions have resembled hypersensitivity or anaphylaxis, including shock and cardiac and/or respiratory arrest. Some patients have exhibited these severe reactions on receiving Phytonadione for the first time. The majority of these reported events occurred following intravenous administration, even when precautions have been taken to dilute the Phytonadione and to avoid rapid infusion. Therefore, the INTRAVENOUS route should be restricted to those situations where another route is not feasible and the increased risk involved is considered justified.lld:dailymed
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dailymed-drugs:1869dailymed-instance:precautio...Drug Interactions: Temporary resistance to prothrombin-depressing anticoagulants may result, especially when larger doses of phytonadione are used. If relatively large doses have been employed, it may be necessary when reinstituting anticoagulant therapy to use somewhat larger doses of the prothrombin-depressing anticoagulant, or to use one which acts ona different principle, such as heparin sodium.<br/>Laboratory Tests: Prothrombin time should be checked regularly as clinical conditions indicate.<br/>Carcinogenesis, Mutagenesis, Impairment of Fertility: Studies of carcinogenicity, mutagenesis or impairment of fertility have not been conducted with phytonadione.<br/>Pregnancy:<br/>Pregnancy Category C: Animal reproduction studies have not been conducted with phytonadione. It is also not known whether phytonadione can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Phytonadione should be given to a pregnant woman only if clearly needed.<br/>Nursing Mothers: It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when phytonadione is administered to a nursing woman.<br/>Pediatric Use: Hemolysis, jaundice, and hyperbilirubinemia in newborns, particularly in premature infants, may be related to the dose of phytonadione. Therefore, the recommended dose should not be exceeded .lld:dailymed
dailymed-drugs:1869dailymed-instance:overdosag...The intravenous LDof Phytonadione Injectable Emulsion, USP in the mouse is 41.5 and 52 mL/kg for the 0.2% and 1.0% concentrations, respectively.lld:dailymed
dailymed-drugs:1869dailymed-instance:genericMe...Phytonadionelld:dailymed
dailymed-drugs:1869dailymed-instance:fullNamePhytonadione (Injection, Emulsion)lld:dailymed
dailymed-drugs:1869dailymed-instance:adverseRe...Severe hypersensitivity reactions, including anaphylactoid reactions and deaths have been reported following parenteral administration. The majority of these reported events occurred following intravenous administration (see Box Warning.) The possibility of allergic sensitivity, including an anaphylactoid reaction, should be kept in mind following parenteral administration. Transient "flushing sensations" and "peculiar" sensations of taste have been observed, as well as rare instances of dizziness, rapid and weak pulse, profuse sweating, brief hypotension, dyspnea, and cyanosis. Pain, swelling, and tenderness at the injection site may occur. Infrequently, usually after repeated injection, erythematous, indurated, pruritic plaques have occurred; rarely, these have progressed to scleroderma-like lesions that have persisted for long periods. In other cases, these lesions have resembled erythema perstans. Hyperbilirubinemia has been observed in the newborn following administration of phytonadione. This has occurred rarely and primarily with doses above those recommended.lld:dailymed
dailymed-drugs:1869dailymed-instance:indicatio...Phytonadione is indicated in the following coagulation disorders which are due to faulty formation of factors II, VII, IX and X when caused by vitamin K deficiency or interference with vitamin K activity. Phytonadione Injectable Emulsion, USP is indicated in:lld:dailymed
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