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Silver Sulfadiazine
Pronunciation
U.S. Brand Names
Generic Available
Canadian Brand Names
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Drug Interactions
Stability
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Monitoring Parameters
Mental Health: Effects on Mental Status
Mental Health: Effects on Psychiatric Treatment
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms
References

Pronunciation
(SIL ver sul fa DYE a zeen)

U.S. Brand Names
Silvadene®; SSD® AF; SSD® Cream; Thermazene®

Generic Available

No


Canadian Brand Names
Dermazin™; Flamazine®

Pharmacological Index

Antibiotic, Topical


Use

Prevention and treatment of infection in second and third degree burns


Pregnancy Risk Factor

B


Contraindications

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


Warnings/Precautions

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


Adverse Reactions

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


Drug Interactions

Decreased effect: Topical proteolytic enzymes are inactivated


Stability

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.


Mechanism of Action

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


Pharmacodynamics/Kinetics

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


Usual Dosage

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


Monitoring Parameters

Serum electrolytes, urinalysis, renal function tests, CBC in patients with extensive burns on long-term treatment


Mental Health: Effects on Mental Status

None reported


Mental Health: Effects on Psychiatric Treatment

May cause leukopenia; use caution with clozapine and carbamazepine


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

Usually applied by professional in burn care setting. Patient instruction should be appropriate to extent of burn, patient understanding, etc.


Nursing Implications

Evaluate the development of granulation


Dosage Forms

Cream, topical: 1% [10 mg/g] (20 g, 50 g, 85 g, 400 g, 1000 g)


References

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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