Dosing & Uses
Dosage Forms & Strengths
injectable solution
- 50mg/mL
- 250mg/mL
General Dosing
15-22.5 mg/kg/day IV/IM divided q8hr
Neonates
Aged ≤7 days
- ≤29 weeks gestational age: 18 mg/kg IV/IM q48hr
- 30-33 weeks gestational age: 18 mg/kg IV/IM q36hr
- ≥34 weeks gestational age: 15 mg/kg IV/IM q24hr
Aged >7 days
- 30-33 weeks gestational age: 15 mg/kg IV/IM q24hr
- ≥34 weeks gestational age: 15 mg/kg IV/IM q12-18hr
Aged 8-28 days old & <29 weeks gestational age
- 15 mg/kg IV/IM q36hr
- Also use this dose for the following: significant asphyxia, indomethacin for PDA, poor cardiac output, or renal impairment
Neonates Aged >28 days old & <29 weeks gestational age
- 15 mg/kg IV/IM q24hr
- Also use this dose for the following: significant asphyxia, indomethacin for PDA, poor cardiac output, or renal impairmen
Contraindications
Documented hypersensitivity
Cautions
Caution in patients with renal impairment
Not intended for long-term therapy; caution in patients with renal failure (not on dialysis), hypocalcemia, myasthenia gravis, and conditions that depress neuromuscular transmission
Serious and potentially life-threatening hypersensitivity reactions, including anaphylaxis, reported; before therapy instituted, evaluate for previous hypersensitivity reactions to aminoglycosides; if anaphylaxis or a hypersensitivity reaction occurs, discontinue therapy and institute appropriate supportive measures
Hypersensitivity pneumonitis reported; if hypersensitivity pneumonitis occurs, discontinue therapy and manage patients as medically appropriate
Higher frequency of hemoptysis and bronchospasm, reported with treatment; if these occur, manage patients as medically appropriate
Aminoglycosides can cause nephrotoxicity; close monitoring of patients with known or suspected renal dysfunction may be needed when prescribing drug
Higher frequency of ototoxicity reported with treatment; closely monitor patients with known or suspected auditory or vestibular dysfunction; if patients develop tinnitus this may be an early symptom of ototoxicity
Aminoglycosides may aggravate muscle weakness because of a potential curare-like effect on neuromuscular function; if neuromuscular blockade occurs, it may be reversed by the administration of calcium salts, but mechanical assistance may be necessary
Higher frequency of exacerbations of underlying pulmonary disease reported with treatment; treat patients as medically appropriate if this occurs
Aminoglycosides can cause total, irreversible, bilateral congenital deafness in pediatric patients exposed in utero
Pregnancy & Lactation
Pregnancy Category: D
Lactation: excretion in milk unknown/not recommended
Pregnancy Categories
A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.
D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.
Administration
IV Incompatibilities
Additive: aminophylline in dextrose-containing diluents, amphotericin B, ampicillin, cefazolin, cefotaxime(?), ceftazidime, chloramphenicol, chlorothiazide, heparin, phenytoin, thiopental, vitamin B/C
Syringe: heparin
Y-site: allopurinol, amphotericin B cholesteryl sulfate, azithromycin, hetastarch, propofol
IV Compatibilities
Solution: compatible with most common solvents
Additive (partial list): aminophylline (in LR, NS, Ringer's, Na-Lactate 1/6M), ascorbic acid, CaCl2, cefepime, ceftriaxone, ciprofloxacin, clindamycin, dexamethasone Na-phosphate(? may be conc-dep), diphenhydramine, fluconazole, furosemide, metronidazole, prochlorperazine, promethazine, NaHCO3, KCl (may not be in dextran6%/NS), succinylcholine, vancomycin
Syringe: caffeine, clindamycin, doxapram
Y-site (partial list): acyclovir, amiodarone, diltiazem, enalaprilat, fluconazole, furosemide, levofloxacin, linezolid, lorazepam, MgSO4, midazolam, milrinone, morphine, ondansetron, warfarin, zidovudine
IV Preparation
Dilute 500 mg to 100 or 200 mL sterile diluent (0.9% NaCl or D5W)
IV/IM Administration
IM: Administer undiluted to upper outer quadrant of buttocks
IV: Infuse over 30-60 min in adults and children; infuse over 1-2 hr in infants