|
Pronunciation |
|
(strep
toe ZOE
sin) |
|
|
U.S. Brand
Names |
|
Zanosar® |
|
|
Generic
Available |
|
No |
|
|
Pharmacological Index |
|
Antineoplastic Agent, Alkylating Agent |
|
|
Use |
|
Treat metastatic islet cell carcinoma of the pancreas, carcinoid tumor and
syndrome, Hodgkin's disease, palliative treatment of colorectal
cancer |
|
|
Pregnancy Risk
Factor |
|
C |
|
|
Warnings/Precautions |
|
The U.S. Food and Drug Administration (FDA) currently recommends that
procedures for proper handling and disposal of antineoplastic agents be
considered. Renal toxicity is dose-related and cumulative and may be severe or
fatal; other major toxicities include liver dysfunction, diarrhea, nausea and
vomiting. There may be an acute release of insulin during treatment. Keep
syringe of D50W at bedside during
administration. |
|
|
Adverse
Reactions |
|
>10%:
Gastrointestinal: Nausea and vomiting in all patients usually 1-4 hours after
infusion; diarrhea in 10% of patients; increased LFTs and hypoalbuminemia
Emetic potential: High (>90%)
Time course of nausea/vomiting: Onset 1-3 hours; Duration: 1-12 hours
Renal: Renal dysfunction occurs in 65% of patients; proteinuria, decreased
Clcr, increased BUN, hypophosphatemia, and renal tubular acidosis;
use caution with patients on other nephrotoxic agents; nephrotoxicity (25% to
75% of patients)
1% to 10%:
Gastrointestinal: Diarrhea
Endocrine & metabolic: Hypoglycemia: Seen in 6% of patients; may be
prevented with the administration of nicotinamide
Local: Pain at injection site
<1%: Confusion, lethargy, depression, leukopenia, thrombocytopenia, liver
dysfunction, secondary malignancy
Myelosuppressive:
WBC: Mild
Platelets: Mild
Onset (days): 7
Nadir (days): 14
Recovery (days): 21 |
|
|
Overdosage/Toxicology |
|
Symptoms of overdose include bone marrow suppression, nausea, vomiting
Treatment of bone marrow suppression is supportive |
|
|
Drug
Interactions |
|
Decreased effect: Phenytoin results in negation of streptozocin cytotoxicity
Increased toxicity: Doxorubicin prolongs half-life and thus prolonged
leukopenia and thrombocytopenia |
|
|
Stability |
|
Store intact vials under refrigeration; vials are stable for one year at room
temperature
Dilute powder with 9.5 mL SWI or NS to a concentration of 100 mg/mL which is
stable for 48 hours at room temperature and 96 hours under refrigeration
Further dilution in D5W or NS is stable for 48 hours at room
temperature and 96 hours under refrigeration when protected from light
Standard I.V. dilution: IVPB: Dose/100-250 mL D5W or NS
Solution is stable for 48 hours at room temperature and 96 hours under
refrigeration when protected from light |
|
|
Mechanism of
Action |
|
Interferes with the normal function of DNA by alkylation and cross-linking
the strands of DNA, and by possible protein modification |
|
|
Pharmacodynamics/Kinetics |
|
Distribution: Concentrates in the liver, intestine, pancreas, and kidney
Metabolism: Rapidly metabolized and disappears from serum in 4 hours
Half-life: 35-40 minutes
Elimination: Majority (60% to 70%) excreted in the urine as metabolites, and
smaller amounts eliminated in bile (1%) and in expired air (5%)
|
|
|
Usual Dosage |
|
I.V. (refer to individual protocols):
Single agent therapy: 1-1.5 g/m2 weekly for 6 weeks followed by a
4-week observation period
Combination therapy: 0.5-1 g/m2 for 5 consecutive days followed by
a 4- to 6-week observation period
Dosing adjustment in renal impairment:
Clcr 10-50 mL/minute: Administer 75% of dose
Clcr <10 mL/minute: Administer 50% of dose
Hemodialysis: Unknown
CAPD effects: Unknown
CAVH effects: Unknown
Dosing adjustment in hepatic impairment: Dose should be decreased in
patients with severe liver disease |
|
|
Monitoring
Parameters |
|
Monitor renal function closely |
|
|
Mental Health: Effects
on Mental Status |
|
May cause lethargy, confusion, or depression |
|
|
Mental Health:
Effects on Psychiatric
Treatment |
|
May cause leukopenia; use caution with clozapine and carbamazepine; renal
dysfunction occurs commonly with streptozocin; will need to monitor and adjust
lithium and gabapentin doses |
|
|
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 drug can only be given I.V. Maintain adequate hydration (2-3 L/day of
fluids unless instructed to restrict fluid intake). Avoid aspirin and
aspirin-containing substances. You may experience nervousness, dizziness,
confusion, or lethargy (use caution when driving or engaging in tasks requiring
alertness until response to drug is known); coagulopathy (use caution with
knives or sharp objects, avoid injury, use electric razor, brush teeth with soft
brush or cotton swabs). You may have increased sensitivity to infection (avoid
crowds and exposure to infection). Report persistent fever; chills; sore throat;
unusual bleeding; blood in urine, stool, vomitus, or stool; chest pain or
palpitations, or difficulty breathing. Pregnancy/breast-feeding
precautions: Inform prescriber if you are pregnant. Do not get pregnant
during or for 1 month following therapy. Male: Do not cause a female to become
pregnant. Male/female: Consult prescriber for instruction on appropriate barrier
contraceptive measures. This drug may cause severe fetal defects. Do not
breast-feed. |
|
|
Nursing
Implications |
|
Wear gloves when preparing and administering; avoid
extravasation |
|
|
Dosage Forms |
|
Injection: 1 g |
|
|
References |
|
Jeffrey LP, Chairman, National Study Commission on Cytotoxic Exposure.
Position Statement.
"The Handling of Cytotoxic Agents by Women Who Are Pregnant, Attempting to Conceive, or Breast-Feeding,"
January 12, 1987. |
|
Copyright © 1978-2000 Lexi-Comp Inc. All Rights Reserved
|