Is free fraction measurement of phenytoin always necessary in pediatric epileptic patients?

abstract：:Plasma levels of haloperidol were monitored in children and teenagers suffering from psychotic episodes and/or abnormal movements (tics and Gilles de la Tourette's syndrome). Steady-state concentrations of haloperidol ranged from 0.7 to 19 ng/ml without any apparent relationship with the administered dose (15--285 mic...

journal_title：Therapeutic drug monitoring

authors： Morselli PL,Bianchetti G,Durand G,Le Heuzey MF,Zarifian E,Dugas M

更新日期：1979-01-01 00:00:00

abstract：BACKGROUND:The anticonvulsant properties of phenytoin (PHT) were discovered in 1938. Since then, it has been one of the most widely used antiepileptic drugs. It is slowly absorbed, extensively plasma protein-bound, exhibits a nonlinear, concentration-dependent pharmacokinetic profile, and has a narrow therapeutic range...

journal_title：Therapeutic drug monitoring

authors： Aliwarga T,Cloyd JC,Goel V,Brundage RC,Marino SE,Leppik IE,Remmel RP

更新日期：2011-02-01 00:00:00

abstract：:Based on the principle that vancomycin therapy requires sustained therapeutic concentrations while avoiding high peaks, some authors reported that optimal vancomycin levels could be ensured by measuring trough levels alone (Cmin). The aim of this work was to assess the performance of a one-compartment Bayesian forecas...

journal_title：Therapeutic drug monitoring

authors： Andrés I,López R,Pou L,Piñol F,Pascual C

更新日期：1997-12-01 00:00:00

abstract：:For many drugs, therapeutic drug monitoring (TDM) has become widely available and accepted as an important component of clinical decision-making in the intensive care nursery setting. This review analyzes the potential factors that can either expand or restrict neonatal TDM. A case is made for the development of pharm...

journal_title：Therapeutic drug monitoring

authors： Giacoia GP

更新日期：1990-07-01 00:00:00

abstract：:C(2) Cyclosporine (CsA) level, as a surrogate of area under the time-concentration curve (AUC) 0-4 hours, is a good predictor of drug absorption and clinical outcome after kidney transplantation. It has been difficult to define the optimal C(2) level in the individual case and given the broad range of C(2) due to inte...

journal_title：Therapeutic drug monitoring

authors： Morales J,Buckel E,Fierro A,Zehnder C,Herzog C,Mañalich J

更新日期：2003-06-01 00:00:00

abstract：:Sirolimus is a new immunosuppressive drug that has been evaluated in animal experiments. The current study was conducted on humans with reformulated sirolimus in doses from 3 mg/m2 to 15 mg/m2. Sixteen renal transplant recipients were included in this phase I study to determine the safety, tolerance, and preliminary p...

journal_title：Therapeutic drug monitoring

authors： Brattström C,Säwe J,Tydén G,Herlenius G,Claesson K,Zimmerman J,Groth CG

更新日期：1997-08-01 00:00:00

abstract：:A simple and sensitive method is presented for the determination of gold in various biological matrices by flameless atomic absorption spectrometry (FAAS). The effects of the biological media on the atomic absorption of gold and the application of some of the important fundamental principles in relation to the measure...

journal_title：Therapeutic drug monitoring

authors： Sharma RP

更新日期：1982-01-01 00:00:00

abstract：BACKGROUND:Because of its superior sensitivity and specificity, multianalyte high-performance liquid chromatography coupled with tandem mass spectrometry has become the gold standard in clinical toxicology. Although several qualitative and quantitative liquid chromatography coupled with tandem mass spectrometry assays ...

journal_title：Therapeutic drug monitoring

authors： Klepacki J,Davari B,Boulet M,Lizarraga R,Christians U

更新日期：2017-10-01 00:00:00

abstract：:It has recently been shown that acute changes of venous blood ammonia (NH3) may predict short-term adverse effects of valproic acid (VPA). In the present study, the time course of NH3 concentration after a single oral dose of VPA (800 mg) was monitored in 68 epileptic patients. Patients were classified into four group...

journal_title：Therapeutic drug monitoring

authors： Zaccara G,Paganini M,Campostrini R,Moroni F,Valenza T,Messori A,Bartelli M,Arnetoli G,Zappoli R

更新日期：1985-01-01 00:00:00

abstract：:A 64-year-old man with chronic renal insufficiency was hospitalized with dysphagia and inability to keep his head erect 11 months after beginning procainamide hydrochloride (PA) for control of atrial flutter. Evaluation revealed esophageal dysmotility, worsening renal function, and elevated serum PA and N-acetylprocai...

journal_title：Therapeutic drug monitoring

authors： Miller CD,Oleshansky MA,Gibson KF,Cantilena LR

更新日期：1993-06-01 00:00:00

abstract：:Given the high prevalence of the use of medications in daily practice and the large number of people taking antirheumatic agents, the risk of drug-drug interactions and of hepatotoxicity is of concern. Both old and new compounds show such a risk. Nonsteroidal antinflammatory drugs are widely used drugs with potential ...

journal_title：Therapeutic drug monitoring

authors： Anelli MG,Scioscia C,Grattagliano I,Lapadula G

更新日期：2012-12-01 00:00:00

abstract：BACKGROUND:In psychopharmacology, treatment with psychotropic drugs is often suboptimal, mainly because of the high interindividual variability in pharmacokinetic properties. Therapeutic drug monitoring (TDM) can be a valuable tool for monitoring the individual effects of a prescribed dosage in a patient, and it facili...

journal_title：Therapeutic drug monitoring

authors： Wang J,Huang H,Yao Q,Lu Y,Zheng Q,Cheng Y,Xu X,Zhou Q,Wu D,Zhang M,Li X,Zhang J

更新日期：2015-10-01 00:00:00

abstract：BACKGROUND:Sirolimus is a mammalian target of rapamycin inhibitor that is being used to prevent organ rejection in kidney transplant patients often in combination with calcineurin inhibitors (CNIs; cyclosporine and tacrolimus). All 3 drugs are metabolized primarily by CYP3As. Clinical drug-drug interaction (DDI) studie...

journal_title：Therapeutic drug monitoring

authors： Emoto C,Vinks AA,Fukuda T

更新日期：2016-10-01 00:00:00

abstract：:The effect of nonlinear kinetics on the steady-state ratio of serum phenytoin (PHT) to total 5-(p-hydroxyphenyl)-5-phenylhydantoin (p-HPPH) was studied in epileptic patients. In each patient, the ratio increased in a nonlinear fashion in relation to both the PHT dose and the PHT serum level. Patients with longer appar...

journal_title：Therapeutic drug monitoring

authors： Bourgeois BF,Wad N

更新日期：1985-01-01 00:00:00

abstract：:The use of alternative strategies to the traditional pre-dose/trough (C0) blood sampling for cyclosporine (CsA) therapeutic drug monitoring has the potential to revolutionize analytical practices which have, in many centers, been established for some 20 years. While the C0 sample has previously been recommended, curre...

journal_title：Therapeutic drug monitoring

authors： Morris RG,Russ GR,Cervelli MJ,Juneja R,McDonald SP,Mathew TH

更新日期：2002-08-01 00:00:00

abstract：:Fentanyl, sufentanil, and morphine are commonly used in the conduct of anesthesia. Medical staff working with these drugs are at high risk of addiction. To detect and prevent diversion, a method was developed to quantify these drugs in discard syringes using the BioRad REMEDi HS Drug Profiling System. For fentanyl, th...

journal_title：Therapeutic drug monitoring

authors： Holth LS,Friesen R,Green C,Krahn J

更新日期：2002-10-01 00:00:00

abstract：:5alpha-Reductase inhibitors such as finasteride are prohibited in sports according to the World Anti-Doping Agency. This class of drugs is used therapeutically to treat benign prostatic hyperplasia, as well as male baldness, by decreasing 5alpha-reductase activity. Accordingly, metabolic pathways of endogenous as well...

journal_title：Therapeutic drug monitoring

authors： Thevis M,Geyer H,Mareck U,Flenker U,Schänzer W

更新日期：2007-04-01 00:00:00

abstract：:Twenty-five healthy volunteers were given 100 mg caffeine orally and several estimates of cytochrome P450 1A2 (CYP1A2) activity were evaluated. The validation was performed by correlation of different parameters in plasma, saliva, and urine to two measures of caffeine clearance, CL(oral) and CL(137X-->17X) that served...

journal_title：Therapeutic drug monitoring

authors： Carrillo JA,Christensen M,Ramos SI,Alm C,Dahl ML,Benitez J,Bertilsson L

更新日期：2000-08-01 00:00:00

abstract：BACKGROUND:Tacrolimus (TAC) has a narrow therapeutic index and high interindividual and intraindividual pharmacokinetic variability, necessitating therapeutic drug monitoring to individualize dosage. Recent evidence suggests that intragraft TAC concentrations may better predict transplant outcomes. This study aimed to ...

journal_title：Therapeutic drug monitoring

authors： Noll BD,Coller JK,Somogyi AA,Morris RG,Russ GR,Hesselink DA,Van Gelder T,Sallustio BC

更新日期：2013-10-01 00:00:00

abstract：:A model for predicting unbound concentrations of mycophenolic acid (MPA) was developed in 84 subjects and then tested in an independent group of 19 hematopoietic cell transplant recipients. Total and unbound MPA concentrations and total mycophenolic glucuronide concentrations were measured between weeks 1 and 4 posttr...

journal_title：Therapeutic drug monitoring

authors： Huang J,Jacobson P,Brundage R

更新日期：2007-08-01 00:00:00

abstract：:The pharmacokinetic equations of Chiou, Koup, and Kurland are often used in the pediatric setting to predict steady-state theophylline clearance using non-steady serum theophylline concentrations. However, these equations have not been validated or compared in a pediatric population. We evaluated the ability of these ...

journal_title：Therapeutic drug monitoring

authors： Reiter PD,Hogue SL,Phelps SJ

更新日期：1992-10-01 00:00:00

abstract：BACKGROUND:Despite significant interindividual variability in prednisolone pharmacokinetics and potentially serious consequences with inadequate or excessive exposure, monitoring of prednisolone levels is not employed to guide therapy. As ultrahigh-performance liquid chromatography-tandem mass spectrometry methods can ...

journal_title：Therapeutic drug monitoring

authors： Yates CJ,Barraclough KA,McWhinney BC,Ungerer JP,Fullinfaw RO,Colman PG,Fourlanos S,Cohney SJ

更新日期：2014-02-01 00:00:00

abstract：:Cefsulodin is a third-generation cephalosporin with a unique specificity for Pseudomonas aeruginosa. To study the pharmacokinetics of this agent in children, a rapid and sensitive high-performance liquid chromatographic micromethod was developed for plasma and urine. Protein was precipitated from plasma with one volum...

journal_title：Therapeutic drug monitoring

authors： Ackers IM,Myers CM,Blumer JL

更新日期：1984-01-01 00:00:00

abstract：:An isocratic, high-performance liquid chromatography method has been developed for simultaneous determination of the tricyclic antidepressant clomipramine and six metabolites: desmethylclomipramine, 2- and 8-hydroxy-clomipramine, 2- and 8-hydroxydesmethylclomipramine and didesmethyl-clomipramine in plasma and urine. I...

journal_title：Therapeutic drug monitoring

authors： Nielsen KK,Brøsen K

更新日期：1993-04-01 00:00:00

abstract：:Hydroxylation of midazolam (MDZ) is mediated almost exclusively by CYP3A isoforms. The authors describe a high-performance liquid chromatography assay involving MDZ, 1'-hydroxymidazolam, and 4-hydroxymidazolam in plasma. The compounds were eluted on an Ultrasphere ODS, 3-microm particle size, 7.5 cm x 4.6 mm reversed-...

journal_title：Therapeutic drug monitoring

authors： Carrillo JA,Ramos SI,Agundez JA,Martinez C,Benitez J

更新日期：1998-06-01 00:00:00

abstract：:Epilepsy is characterized by seizures recurring at interindividually differing time intervals. It may be difficult to assess drug response if time intervals between seizures are long. Thus, the existence of surrogate parameters that could be used to reliably identify drug efficacy and tolerability at an early stage an...

journal_title：Therapeutic drug monitoring

authors： Brandt C

更新日期：2019-04-01 00:00:00

abstract：:A neurophysiologic test battery (consisting of a 24-hour, seven-channel electroencephalogram [EEG], EEG spectral analysis, multiple sleep latency test, visual evoked potentials, critical flicker fusion, and visual contrast sensitivity) was administered twice to 16 patients with juvenile myoclonic epilepsy (JME) in a d...

journal_title：Therapeutic drug monitoring

authors： Sundqvist A,Nilsson BY,Tomson T

更新日期：1999-02-01 00:00:00

abstract：:The adsorption of amitriptyline, desipramine, doxepin, imipramine, and nortriptyline onto cholestyramine was demonstrated in vitro with use of 1.2 mol/L HCl at 37 degrees C to simulate gastric fluid. Binding to cholestyramine was approximately 80% for each of the tricyclic antidepressants, and this was about the same ...

journal_title：Therapeutic drug monitoring

authors： Bailey DN,Coffee JJ,Anderson B,Manoguerra AS

更新日期：1992-08-01 00:00:00

abstract：BACKGROUND:Beta-lactams are first-line antibiotics for the management of superficial infections due to burn injury. There is sparse data available on therapeutic drug monitoring (TDM) in patients with burns in a ward setting. This study was conducted to evaluate the utility of a beta-lactam TDM program in a cohort of b...

journal_title：Therapeutic drug monitoring

authors： Patel BM,Paratz J,See NC,Muller MJ,Rudd M,Paterson D,Briscoe SE,Ungerer J,McWhinney BC,Lipman J,Roberts JA

更新日期：2012-04-01 00:00:00

abstract：BACKGROUND:Infliximab is a chimeric monoclonal antibody that binds to human tumor necrosis factor alpha and which is approved for refractory spondyloarthritis (SpA). Individual adjustment of infliximab dosage may help to improve the therapeutic response in SpA. We investigated whether a knowledge of infliximab serum co...

journal_title：Therapeutic drug monitoring

authors： Méric JC,Mulleman D,Ducourau E,Lauféron F,Miow Lin DC,Watier H,Goupille P,Paintaud G

更新日期：2011-08-01 00:00:00