|
Pronunciation |
|
(val
ru BYE
cin) |
|
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U.S. Brand
Names |
|
Valstar™ |
|
|
Generic
Available |
|
No |
|
|
Pharmacological Index |
|
Antineoplastic Agent, Antibiotic |
|
|
Use |
|
Intravesical therapy of BCG-refractory carcinoma in situ of the
urinary bladder |
|
|
Pregnancy Risk
Factor |
|
C |
|
|
Pregnancy/Breast-Feeding
Implications |
|
It is not known whether valrubicin is secreted in human milk. Because many
drugs are secreted in milk, and the potential for serious adverse reactions
exists, a decision should be made whether to discontinue nursing or discontinue
the drug, taking into account the importance of the drug to the
mother. |
|
|
Contraindications |
|
Known hypersensitivity to anthracyclines, Cremophor®
EL, or any component of this product; concurrent urinary tract infection or
small bladder capacity (unable to tolerate a 75 mL
instillation) |
|
|
Warnings/Precautions |
|
Complete response observed in only 1 of 5 patients, delay of cystectomy may
lead to development of metastatic bladder cancer, which is lethal. If complete
response is not observed after 3 months or disease recurs, cystectomy must be
reconsidered. Do not administer if mucosal integrity of bladder has been
compromised or bladder perforation is present. Following TURP, status of bladder
mucosa should be evaluated prior to initiation of therapy. Administer under the
supervision of a physician experienced in the use of intravesical chemotherapy.
Aseptic technique must be used during administration. All patients of
reproductive age should use an effective method of contraception during the
treatment period. Irritable bladder symptoms may occur during instillation and
retention. Caution in patients with severe irritable bladder symptoms. Do not
clamp urinary catheter. Red-tinged urine is typical for the first 24 hours after
instillation. Prolonged symptoms or discoloration should prompt contact with the
physician. |
|
|
Adverse
Reactions |
|
>10%: Genitourinary: Frequency (61%), dysuria (56%), urgency (57%),
bladder spasm (31%), hematuria (29%), bladder pain (28%), urinary incontinence
(22%), cystitis (15%), urinary tract infection (15%)
1% to 10%:
Cardiovascular: Chest pain (2%), vasodilation (2%), peripheral edema (1%)
Central nervous system: Headache (4%), malaise (4%), dizziness (3%), fever
(2%)
Dermatologic: Rash (3%)
Endocrine & metabolic: Hyperglycemia (1%)
Gastrointestinal: Abdominal pain (5%), nausea (5%), diarrhea (3%), vomiting
(2%), flatulence (1%)
Genitourinary: Nocturia (7%), burning symptoms (5%), urinary retention (4%),
urethral pain (3%), pelvic pain (1%), hematuria (microscopic) (3%)
Hematologic: Anemia (2%)
Neuromuscular & skeletal: Weakness (4%), back pain (3%), myalgia (1%)
Respiratory: Pneumonia (1%)
<1%: Tenesmus, pruritus, taste disturbance, skin irritation, decreased
urine flow, urethritis |
|
|
Overdosage/Toxicology |
|
Inadvertent paravenous extravasation was not associated with skin ulceration
or necrosis. Myelosuppression is possible following inadvertent systemic
administration or following significant systemic absorption from intravesical
instillation. |
|
|
Drug
Interactions |
|
No specific drug interactions studies have been performed; the systemic
exposure to valrubicin is negligible, and interactions are
unlikely |
|
|
Stability |
|
Store unopened vials under refrigeration at 2°C to
8°C (36°F to
48°F); stable for 12 hours when diluted in 0.9% sodium
chloride |
|
|
Mechanism of
Action |
|
Blocks function of DNA topoisomerase II; inhibits DNA synthesis, causes
extensive chromosomal damage, and arrests cell development |
|
|
Pharmacodynamics/Kinetics |
|
Absorption: Well absorbed into bladder tissue, negligible systemic
absorption. Trauma to mucosa may increase absorption, and perforation greatly
increases absorption with significant systemic myelotoxicity.
Metabolism: Negligible after intravesical instillation and 2 hour retention
Elimination: In urine, when expelled from urinary bladder
|
|
|
Usual Dosage |
|
Adults: Intravesical: 800 mg once weekly for 6 weeks
Dosing adjustment in hepatic impairment: No specific adjustment
recommended |
|
|
Monitoring
Parameters |
|
Cystoscopy, biopsy, and urine cytology every 3 months for recurrence or
progression |
|
|
Mental Health: Effects
on Mental Status |
|
May cause dizziness or drowsiness |
|
|
Mental Health:
Effects on Psychiatric
Treatment |
|
None noted |
|
|
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 |
|
This medication will be instilled into your bladder through a catheter to be
retained for as long as possible. Your urine will be red tinged for the next 24
hours; report promptly if this continues for a longer period. You may experience
altered urination patterns (frequency, dysuria, or incontinence), some bladder
pain, pain on urination, or pelvic pain; report if these persist. Diabetics
should monitor glucose levels closely (may cause hyperglycemia). It is important
that you maintain adequate hydration (2-3 L/day of fluids unless instructed to
restrict fluid intake). You may experience some dizziness or fatigue (use
caution when driving or engaging in tasks requiring alertness until response to
drug is known); or nausea, vomiting, or taste disturbance (small frequent meals,
frequent mouth care, chewing gum, or sucking lozenges may help). Report chest
pain or palpitations; persistent dizziness; swelling of extremities; persistent
nausea, vomiting, diarrhea, or abdominal pain; muscle weakness, pain, or
tremors; unusual cough or difficulty breathing; or other adverse effects related
to this medication. Pregnancy/breast-feeding precautions: Inform
prescriber if you are or intend to be pregnant. Breast-feeding is not
recommended. |
|
|
Dosage Forms |
|
Injection: 40 mg/mL, 200 mg/5
mL |
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