Примери за използване на Fentanyl concentrations на Английски и техните преводи на Български
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Fentanyl concentrations may increase if the skin temperature increases(see section 5.2).
This is due to the gradual increase in serum fentanyl concentrations during the first 24 hours after application of the patch.
Plasma fentanyl concentrations reach 1.0 ng/ml,(which is generally considered analgesic) in more than 60% of dogs within 4 hours of administration.
If an earlier change becomes necessary in individual cases, no change should be made before 48 hours have elapsed,otherwise a rise in mean fentanyl concentrations may occur.
Mean plasma fentanyl concentrations following single doses of PecFent and OTFC in healthy subjects.
There is a high inter-subject variability in fentanyl pharmacokinetics,in the relationships between fentanyl concentrations, therapeutic and adverse effects, and in opioid tolerance.
The serum fentanyl concentrations attained are proportional to the DUROGESIC patch size.
The pharmacokinetic absorption profile will repeat with each application to a new skin site, therefore with each new application absorption is less when IONSYS is first applied, andconsequently a fall in plasma fentanyl concentrations will occur.
This is because fentanyl concentrations fall gradually after DUROGESIC is removed.
Patients who have experienced serious adverse events should be monitored for at least 24 hours after removal of DUROGESIC, or more, as clinical symptoms dictate,because serum fentanyl concentrations decline gradually and are reduced by about 50% 20 to 27 hours later.
The serum fentanyl concentrations attained are dependant on the fentanyl transdermal patch size.
Data in subjects with cirrhosis andsimulated data in subjects with different grades of impaired liver function treated with transdermal fentanyl suggest that fentanyl concentrations may be increased, and fentanyl clearance may be decreased compared to subjects with normal liver function.
The maximum plasma fentanyl concentrations of 0.7 to 4.7 ng/ml are reached within 10 to 18 hours of dose administration.
Fentanyl concentrations were measured in more than 250 children aged 2 to 17 years who were applied fentanyl patches in the dose range of 12.5 to 300 mcg/h.
Elimination When treatment with Fentanyl-ratiopharm is withdrawn,serum fentanyl concentrations decline gradually, falling approximately 50% in 13-22 hours in adults or 22-25 hours in children, respectively.
Examples of active substances that may increase fentanyl concentrations include: amiodarone, cimetidine, clarithromycin, diltiazem, erythromycin, fluconazole, itraconazole, ketoconazole, nefazodone, ritonavir, verapamil and voriconazole(this list is not exhaustive).
A pharmacokinetic model has suggested that serum fentanyl concentrations may increase by 14%(range 0-26%) if a new patch is applied after 24 hours rather than the recommended 72-hour application.
Absorption After the first application of Fentanyl-ratiopharm,serum fentanyl concentrations increase gradually, generally levelling off between 12 and 24 hours, and remaining relatively constant for the remainder of the 72-hour application period.
Elevated fentanyl concentration may lead to respiratory depression.
In general, the maximum serum fentanyl concentration occurs approximately 15 minutes after the initiation of a dose.
The minimum effective fentanyl concentration depends on the pain intensity and the previous use of opioid therapy.
The mean plasma fentanyl concentration from time 0 through 96 hours post-dose administration is approximately 1.32 ng/ml.
Both the lowest effective fentanyl concentration and the concentration causing adverse reactions will increase with the development of increasing tolerance.
Plasma Fentanyl Concentration(ng/mL).
In general the maximum serum fentanyl concentration occurs approximately 15 minutes after the initiation of a dose.
This delay is due to the gradual increase in serum fentanyl concentration in the 24 hours following initial patch application.
As for patients with Grade C liver disease(Child-Pugh Score= 12.5),the results indicate that fentanyl concentration accumulates with each administration, leading these patients to have an approximately 3.72 times larger AUC at steady state.
Upon system removal after the last dose,decline in serum fentanyl concentration is similar to that of intravenous fentanyl. .
Upon system removal after the last dose, the decline in serum fentanyl concentration is similar to that of intravenous fentanyl. .
It may take 20 hours or more for the fentanyl serum concentrations to decrease 50%.