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Pronunciation |
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(kap
ree oh MYE
sin) |
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U.S. Brand
Names |
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Capastat®
Sulfate |
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Generic
Available |
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No |
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Synonyms |
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Capreomycin Sulfate |
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Pharmacological Index |
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Antibiotic, Miscellaneous; Antitubercular Agent |
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Use |
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Treatment of tuberculosis in conjunction with at least one other
antituberculosis agent |
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Pregnancy Risk
Factor |
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C |
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Contraindications |
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Known hypersensitivity to capreomycin sulfate |
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Warnings/Precautions |
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Use in patients with renal insufficiency or pre-existing auditory impairment
must be undertaken with great caution, and the risk of additional eighth nerve
impairment or renal injury should be weighed against the benefits to be derived
from therapy. Since other parenteral antituberculous agents (eg, streptomycin)
also have similar and sometimes irreversible toxic effects, particularly on
eighth cranial nerve and renal function, simultaneous administration of these
agents with capreomycin is not recommended. Use with nonantituberculous drugs
(ie, aminoglycoside antibiotics) having ototoxic or nephrotoxic potential should
be undertaken only with great caution. |
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Adverse
Reactions |
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>10%:
Otic: Ototoxicity [subclinical hearing loss (11%), clinical loss (3%)],
tinnitus
Renal: Nephrotoxicity (36%, increased BUN)
1% to 10%: Hematologic: Eosinophilia (dose-related, mild)
<1%: Vertigo, hypokalemia, leukocytosis, thrombocytopenia (rare); pain,
induration, and bleeding at injection site; hypersensitivity (urticaria, rash,
fever) |
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Overdosage/Toxicology |
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Symptoms of overdose include renal failure, ototoxicity, thrombocytopenia
Treatment is supportive |
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Drug
Interactions |
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Increased effect/duration of nondepolarizing neuromuscular blocking agents
Additive toxicity (nephro- and ototoxicity, respiratory paralysis):
Aminoglycosides (eg, streptomycin) |
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Mechanism of
Action |
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Capreomycin is a cyclic polypeptide antimicrobial. It is administered as a
mixture of capreomycin IA and capreomycin IB. The mechanism of action of
capreomycin is not well understood. Mycobacterial species that have become
resistant to other agents are usually still sensitive to the action of
capreomycin. However, significant cross-resistance with viomycin, kanamycin, and
neomycin occurs. |
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Pharmacodynamics/Kinetics |
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Absorption: Oral: Poor absorption necessitates parenteral administration
Half-life: Dependent upon renal function and varies with creatinine
clearance; 4-6 hours
Time to peak serum concentration: I.M.: Within 1 hour
Elimination: Essentially excreted unchanged in the urine; no significant
accumulation after greater than or equal to 30 day of 1 g/day dosing in patients
with normal renal function |
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Usual Dosage |
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I.M.:
Adults: 15-20 mg/kg/day up to 1 g/day for 60-120 days, followed by 1 g 2-3
times/week
Dosing interval in renal impairment: Adults:
Clcr >100 mL/minute: Administer 13-15 mg/kg every 24 hours
Clcr 80-100 mL/minute: Administer 10-13 mg/kg every 24 hours
Clcr 60-80 mL/minute: Administer 7-10 mg/kg every 24 hours
Clcr 40-60 mL/minute: Administer 11-14 mg/kg every 48 hours
Clcr 20-40 mL/minute: Administer 10-14 mg/kg every 72 hours
Clcr <20 mL/minute: Administer 4-7 mg/kg every 72 hours
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Reference Range |
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10 mg/mL |
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Mental Health: Effects
on Mental Status |
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May cause dizziness |
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Mental Health:
Effects on Psychiatric
Treatment |
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None reported |
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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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Take as prescribed; do not discontinue without consulting prescriber.
Maintain adequate hydration (2-3 L/day of fluids unless instructed to restrict
fluid intake) to reduce incidence of nephrotoxicity. While taking this
medication, routine blood tests and auditory tests will be necessary. Report any
hearing loss, dizziness or vertigo, persistent nausea or vomiting, loss of
appetite, or increased frequency of urination. Pregnancy/breast-feeding
precautions: Inform prescriber if you are or intend to be pregnant. Consult
prescriber if breast-feeding. |
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Nursing
Implications |
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The solution for injection may acquire a pale straw color and darken with
time; this is not associated with a loss of potency or development of
toxicity |
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Dosage Forms |
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Injection, as sulfate: 100 mg/mL (10 mL) |
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References |
|
Davidson PT and Le HQ, "Drug Treatment of Tuberculosis - 1992," Drugs,
1992, 43(5):651-73.
"Drugs for Tuberculosis," Med Lett Drugs Ther, 1993, 35(908):99-101.
Iseman MD, "Treatment of Multidrug-Resistant Tuberculosis," N Engl J
Med, 1993, 329(11):784-91. |
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