Pharmacokinetics in children
CONVENTIONAL AMFOTERICINE B:
| |
Vd (L/kg) |
T1/2 (hours) |
Clearance ml/min/kg (Benson et al., 1989) |
| Premature neonates(GA: 27,4 ± 5 weeks): |
- |
14.8 hours (range 5 - 82) |
- |
| 4 mnd-18 years |
0,23-1,91 (Benson et al 1989, Koren et al 1988) |
- |
- |
| 4 mnd-14 years |
- |
18,1 ± 6,6 hours (range 11,9 tot 40,3 ) (Benson et al., 1989) |
- |
| 8-9 years |
- |
- |
0,57 ± 0,15 |
| 10-14 years |
- |
- |
0,24 ± 0,02 |
Premature babies (GA: 27.4 ± 5 weeks): high inter-individual variability in pharmacokinetics;
Central nervous system penetration: cerebrospinal fluid concentration was 40-90% of serum concentration (Baley et al., 1990)
T1 / 2:
The data in the literature is sometimes contradictory.
There is some evidence that amphotericin B has a deep peripheral compartment in children (as well as adults). This would mean a longer terminal half-life. Steady state was not reached even after 7 to 18 days (Koren et al., 1988).
LIPOSOMAL AMPHOTERICIN B
Following administration of 2.5-10 mg / kg Ambisome to children aged 1-17 years, the following kinetic parameters have been found:
Cmax: 15-68 µg / ml
Cl: 38-60 ml / kg / hour; Clsteady state: 13 ml / kg / hour
t½: 10 hours
dose recommendation of formulary compared to licensed use (on-label versus off-label)
No information is present at this moment.
Available formulations
No information is present at this moment.
Dosages
| Systemic mycosis: conventional amphotericine B |
- Intravenous
-
Term neonate
-
1
mg/kg/day
in 1
dose. Max: 1.5 mg/kg/day.
|
| Systemic mycoses |
- Intravenous
-
0 years
up to
18 years
-
Amfotericine liposomal of lipid formulations:
3
- 5
mg/kg/day
in 1
dose
The Abelcet manufacturer recommends a test dose of 0.1 mg / kg, max 1 mg. There is no scientific basis for this. Nor does it provide a reliable prediction for tolerance.
Doses above 5,5 mg/kg/day are not proven to be more effective compared with lower doses, but may lead to increased toxicity. Cumulative doses above 10 gram should therefore be avoided. (SmPC Abelcet)
|
| Pulmonary/respiratory mycoses |
- Inhalation
-
1 month
up to
18 years
[12]
-
Liposomal formulation:
50
mg/dose
once a week.
-
1 month
up to
18 years
-
Liposomal formulation:
50
mg/dose
once a week.
-
1 month
up to
18 years
-
Liposomal formulation:
50
mg/dose
once a week.
|
Renal impaiment in children > 3 months
Adjustment in renal impairment as specified:
GFR 50-80 ml/min/1.73 m2
adjustment not necessary
GFR 30-50 ml/min/1.73 m2
adjustment not necessary
GFR 10-30 ml/min/1.73 m2
Conventional Amphotericin B is contraindicated in severe kidney insufficiency. Liposomal or lipid formulations as well as collodidal dispersions of amphotericin B may be administerred without the need for dose adjustment
GFR < 10 ml/min/1.73 m2
A general recommendation is not provided
The complete list of all undesirable drug reactions can be found in the national Summary of Product Characteristics (SmPC) – click here
Side effects in children
In children, the side effect profile is similar to that of adults.
The complete list of all contra-indications can be found in the national Summary of Product Characteristics (SmPC) – click here
Contra-indications
No information available on specific contra indications in children.
The complete list of all warnings and precautions can be found in the national Summary of Product Characteristics (SmPC) – click here
Warnings & precautions in children
CONVENTIONAL AMPHOTERICIN B
The first dose should be applied under clinical observation.
Antipyretics such as Paracetamol and/or antihistaminics such as Diphenydramin or low dose corticosteroids can reduce acute side effects of conventional Amphotericin B which ocurred in patients before.
Sodium-supplementation before applying conventional Amphotericin B can reduce nephrotoxicity. Studies show that a high sodium intake of >4mEq/kg/d in perterms in advance to Amphotericin B therapy has proven to be protective [Holler 2004, Turcu 2009, Lannos 1991]. Cave: incompatibility of Amphotericin B solution with sodium-chloride solution!
Interactions
The complete list of all interactions can be found in the national Summary of Product Characteristics (SmPC) – click here
ANTIMYCOTICS FOR SYSTEMIC USE
This pages provides a list of drugs from the same ATC class for comparison. This does not necessarily mean that these drugs are interchangeable.
| Antibiotics |
|
|
|
J02AA01
|
|
|
|
J02AA01
|
|
|
|
J02AA01
|
| Triazole and tetrazole derivatives |
|
|
|
J02AC01
|
|
|
|
J02AC05
|
|
|
|
J02AC02
|
|
|
|
J02AC04
|
|
|
|
J02AC03
|
| Other antimycotics for systemic use |
|
|
|
J02AX06
|
|
|
|
J02AX04
|
|
|
|
J02AX01
|
|
|
|
J02AX05
|
References
-
Cheplapharm, SmPC Amphotericin B 50 mg Plv. z. Herst. e. Inf.lsg. (14538), https://www.univadis.at/, 01/2019
-
Nath, CE, et al., Population pharmacokinetics of amphotericin B in children with malignant diseases, Br J Clin Pharmacol, 2001, 52(6), 671-80
-
Lannos, A, et al., Effet of salt supplementation on amphotericin B nephrotoxicity, Kidney Int, 1991, 40(2), 302-8
-
Turcu, R, et al., Influence of sodium intake on amphotericin B-inducednephrotoxicity among extremely premature infants, Pediatr Nephrol, 2009, 24, 497–505
-
Holler, B, et al., Effects of fluid and electrolyte management on amphotericin B-induced nephrotoxicity among extremely low birth weight infants, Pediatrics, 2004, 113(6), 608-16
-
Starke, JR, et al., Pharmacokinetics of amphotericin B in infants and children, J Infect Dis, 1987, 155(4), 766-74
-
Warris, A, et al., ESCMID-ECMM guideline: diagnosis and management of invasive aspergillosis in neonates and children, https://www.escmid.org/escmid_publications/medical_guidelines/escmid_medical_guidelines/, 2019
-
Hope, WW, et al., ESCMID guiedline for the diagnosis and management of Candida diseases 2012: prevention and management of invasive infections in neonates and children caused by Candida spp., https://www.escmid.org/escmid_publications/medical_guidelines/escmid_medical_guidelines/, 2012
-
Koren, G, et al., Pharmacikinetics and adverse effects of amphotericin B in infants and children, J Pediatr, 1988, 113(3), 559-63
-
Benson, JM, et al., Pharmacokinetics of amphotericin B in children, Antimicrob Agents Chemother, 1989, 33(11), 1989-93
-
Baley, JE, et al., Pharmacokinetics, outcome of treatment, and toxic effects of amphotericin B and 5-fluorocytosine in neonates, https://www.univadis.at/, 1990, 116(5), 791-7
-
Hartwig NC et al, Vademecum pediatrische antimicrobiele therapie, 2005
-
Gilead Sciences International Limited, SmPC Ambisome (RVG 15610) 10 dec 2019, www.geneesmiddeleninformatiebank.nl
-
Cephalon Ltd, SPC Abelcet (RVG 20850) 17-09-2018, www.geneesmiddeleninformatiebank.nl
-
Pane ZD et al, Therapeutic strategies for invasive fungal infections in neonatal and pediatric patients: an update, Expert Opin Pharmacother, 2015, Apr;16(5), 693-10
Therapeutic Drug Monitoring
Overdose