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Pronunciation |
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(SIL
ver sul fa DYE a
zeen) |
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U.S. Brand
Names |
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Silvadene®; SSD® AF; SSD®
Cream; Thermazene® |
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Generic
Available |
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No |
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Canadian Brand
Names |
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Dermazin™;
Flamazine® |
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Pharmacological Index |
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Antibiotic, Topical |
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Use |
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Prevention and treatment of infection in second and third degree
burns |
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Pregnancy Risk
Factor |
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B |
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Contraindications |
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Hypersensitivity to silver sulfadiazine or any component; premature infants
or neonates <2 months of age because sulfonamides compete with bilirubin for
protein binding sites which may displace bilirubin and cause kernicterus,
pregnant women approaching or at term |
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Warnings/Precautions |
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Use with caution in patients with G-6-PD deficiency, renal impairment, or
history of allergy to other sulfonamides; sulfadiazine may accumulate in
patients with impaired hepatic or renal function; fungal superinfection may
occur; use of analgesic might be needed before application; systemic absorption
is significant and adverse reactions may occur |
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Adverse
Reactions |
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1% to 10%:
Dermatologic: Itching, rash, erythema multiforme, discoloration of skin
Hematologic: Hemolytic anemia, leukopenia, agranulocytosis, aplastic anemia
Hepatic: Hepatitis
Renal: Interstitial nephritis
Miscellaneous: Allergic reactions may be related to sulfa component
<1%: Photosensitivity |
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Drug
Interactions |
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Decreased effect: Topical proteolytic enzymes are
inactivated |
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Stability |
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Silvadene® cream will occasionally darken either in the
jar or after application to the skin. This color change results from a light
catalyzed reaction which is a common characteristic of all silver salts. A
similar analogy is the oxidation of silverware. The product of this color change
reaction is silver oxide which ranges in color from gray to black. Silver oxide
has rarely been associated with permanent skin discoloration. Additionally, the
antimicrobial activity of the product is not substantially diminished because
the color change reaction involves such a small amount of the active drug and is
largely a surface phenomenon. |
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Mechanism of
Action |
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Acts upon the bacterial cell wall and cell membrane. Bactericidal for many
gram-negative and gram-positive bacteria and is effective against yeast. Active
against Pseudomonas aeruginosa, Pseudomonas maltophilia,
Enterobacter species, Klebsiella species, Serratia species,
Escherichia coli, Proteus mirabilis, Morganella
morganii, Providencia rettgeri, Proteus vulgaris,
Providencia species, Citrobacter species, Acinetobacter
calcoaceticus, Staphylococcus aureus, Staphylococcus
epidermidis, Enterococcus species, Candida albicans,
Corynebacterium diphtheriae, and Clostridium
perfringens |
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Pharmacodynamics/Kinetics |
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Absorption: Significant percutaneous absorption of silver sulfadiazine can
occur especially when applied to extensive burns
Half-life: 10 hours and is prolonged in patients with renal insufficiency
Time to peak serum concentration: Within 3-11 days of continuous therapy
Elimination: ~50% excreted unchanged in urine |
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Usual Dosage |
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Children and Adults: Topical: Apply once or twice daily with a sterile-gloved
hand; apply to a thickness of
1/16
"; burned area should be covered with cream at all times |
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Monitoring
Parameters |
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Serum electrolytes, urinalysis, renal function tests, CBC in patients with
extensive burns on long-term treatment |
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Mental Health: Effects
on Mental Status |
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None reported |
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Mental Health:
Effects on Psychiatric
Treatment |
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May cause leukopenia; use caution with clozapine and
carbamazepine |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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No effects or complications reported |
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Patient
Information |
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Usually applied by professional in burn care setting. Patient instruction
should be appropriate to extent of burn, patient understanding,
etc. |
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Nursing
Implications |
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Evaluate the development of granulation |
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Dosage Forms |
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Cream, topical: 1% [10 mg/g] (20 g, 50 g, 85 g, 400 g, 1000
g) |
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References |
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Kulick MI, Wong R, Okarma TB, et al,
"Prospective Study of Side Effects Associated With the Use of Silver Sulfadiazine in Severely Burned Patients,"
Ann Plast Surg, 1985, 14(5):407-18.
Lockhart SP, Rushworth A, Azmy AA, et al,
"Topical Silver Sulfadiazine: Side Effects and Urinary Excretion," Burns Incl
Therm Inj, 1983, 10(1):9-12. |
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