|
| Generic
Available |
|
|
No |

|
|
| Synonyms |
|
| d-Tubocurarine Chloride;
Tubocurarine Chloride |

|
|
| Pharmacological Index |
|
|
Neuromuscular Blocker Agent, Nondepolarizing |

|
|
| Use |
|
|
Adjunct to anesthesia to induce skeletal muscle
relaxation |

|
|
| Pregnancy Risk
Factor |
|
|
C |

|
|
| Contraindications |
|
|
Hypersensitivity to tubocurarine or any component; patients in whom histamine
release is a definite hazard |

|
|
| Warnings/Precautions |
|
|
Use with caution in patients with renal impairment, respiratory depression,
impaired hepatic or endocrine function, myasthenia gravis, and the elderly;
ventilation must be supported during neuromuscular blockade; rapid
administration may cause histamine release resulting in respiratory depression
and bronchospasm |

|
|
| Adverse
Reactions |
|
|
1% to 10%: Cardiovascular: Hypotension
<1%: Edema, circulatory collapse, cardiac arrhythmias, increased heart
rate or bradycardia, skin flushing, rash, itching, erythema, increased
salivation, decreased GI motility, bronchospasm, hypersensitivity reactions,
allergic reactions |

|
|
| Overdosage/Toxicology |
|
|
Symptoms of overdose include prolonged skeletal muscle weakness and apnea,
cardiovascular collapse
Use neostigmine, edrophonium or pyridostigmine with atropine to antagonize
skeletal muscle relaxation; support of ventilation and the cardiovascular system
through mechanical means, fluids, and pressors may be necessary.
|

|
|
| Drug
Interactions |
|
|
Increased effect/toxicity with aminoglycosides, ketamine, magnesium sulfate,
verapamil, quinidine, clindamycin, furosemide |

|
|
| Stability |
|
|
Refrigerate; incompatible with barbiturates |

|
|
| Mechanism of
Action |
|
|
Blocks acetylcholine from binding to receptors on motor endplate inhibiting
depolarization |

|
|
| Pharmacodynamics/Kinetics |
|
|
Elimination: ~33% to 75% of parenteral dose is excreted unchanged in urine in
24 hours; ~10% excreted in bile |

|
|
| Usual Dosage |
|
|
I.V.:
Alternative adult dose: 6-9 mg once daily, then 3-4.5 mg as needed to
maintain paralysis
Dosing adjustment/comments in renal impairment: May accumulate with
multiple doses and reductions in subsequent doses is recommended
Clcr 50-80 mL/minute: Administer 75% of normal dose
Clcr 10-50 mL/minute: Administer 50% of normal dose
Clcr <10 mL/minute: Avoid use
Dosing comments in hepatic impairment: Larger doses may be necessary
|

|
|
| Administration |
|
|
May also give I.M.; administer I.V. undiluted over 60-90 seconds and flush
I.V. cannula with NS or D5W |

|
|
| Monitoring
Parameters |
|
|
Mean arterial pressure, heart rate, respiratory status, serum
potassium |

|
|
| Mental Health: Effects
on Mental Status |
|
|
None reported |

|
|
| Mental Health:
Effects on Psychiatric
Treatment |
|
|
None reported |

|
|
| Nursing
Implications |
|
|
Parenteral: May infuse direct I.V. without further dilution over a period of
1-11/2
minutes |

|
|
| Dosage Forms |
|
|
Injection, as chloride: 3 mg/mL [3 units/mL] (5 mL, 10 mL, 20
mL) |

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