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Vancomycin pharmacokinetics

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https://www.readbyqxmd.com/read/28936957/-pk-pd-of-vancomycin-in-patients-with-severe-acute-pancreatitis-combined-with-augmented-renal-clearance
#1
Juan He, Enqiang Mao, Feng Jing, Huiting Jiang, Wenyun Xu, Wanhua Yang, Erzhen Chen
OBJECTIVE: To evaluate the serum trough concentration and the pharmacokinetics/pharmacodynamics (PK/PD) of vancomycin in patients with severe acute pancreatitis (SAP), and analyze the effect of vancomycin continuous infusion for optimizing the characteristics of its PK/PD. METHODS: The inhospital patients with SAP received vancomycin treatment and admitted to emergency intensive care unit (EICU) of Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine from January 2011 to December 2016 were enrolled...
September 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28923303/an-extremely-high-bioavailability-of-orally-administered-vancomycin-in-a-patient-with-severe-colitis-and-renal-insufficiency
#2
Shingo Yamazaki, Takaaki Suzuki, Tatsuya Suzuki, Hirokazu Takatsuka, Masayuki Ishikawa, Noriyuki Hattori, Takeshi Fujishiro, Hideaki Miyauchi, Takehiko Oami, Noritaka Ariyoshi, Shigeto Oda, Hisahiro Matsubara, Itsuko Ishii
Because there is little absorption of orally administered vancomycin hydrochloride (VCM) through the normal intestinal microvillus membrane, the pharmacokinetics of VCM absorbed from the digestive tract are mostly unknown. Here we report a case of severe colitis and renal insufficiency in which the serum concentration of VCM reached the supratherapeutic range after oral administration. A 54-year-old man receiving outpatient chemotherapy for rectal cancer was admitted to our hospital for severe sepsis and acute renal failure...
September 8, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28914105/bone-and-subcutaneous-adipose-tissue-pharmacokinetics-of-vancomycin-in-total-knee-replacement-patients
#3
Mats Bue, Mikkel Tøttrup, Pelle Hanberg, Otto Langhoff, Hanne Birke-Sørensen, Theis M Thillemann, Torben L Andersson, Kjeld Søballe
Background and purpose - The incidence of orthopedic methicillin-resistant Staphylococcus aureus (MRSA) infections is increasing. Vancomycin may therefore play an increasingly important role in orthopedic perioperative antimicrobial prophylaxis. Studies investigating perioperative bone and soft tissue concentrations of vancomycin are sparse and challenged by a lack of appropriate methods. We assessed single-dose plasma, subcutaneous adipose tissue (SCT) and bone concentrations of vancomycin using microdialysis in male patients undergoing total knee replacement...
September 15, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28905331/antibiotic-distribution-into-cerebrospinal-fluid-can-dosing-safely-account-for-drug-and-disease-factors-in-the-treatment-of-ventriculostomy-associated-infections
#4
Nilesh Kumta, Jason A Roberts, Jeffrey Lipman, Menino Osbert Cotta
Ventriculostomy-associated infections, or ventriculitis, in critically ill patients are associated with considerable morbidity. Efficacious antibiotic dosing for the treatment of these infections may be complicated by altered antibiotic concentrations in the cerebrospinal fluid due to variable meningeal inflammation and antibiotic properties. Therefore, doses used to treat infections with a higher degree of meningeal inflammation (such as meningitis) may often fail to achieve equivalent exposures in patients with ventriculostomy-associated infections such as ventriculitis...
September 13, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28893792/influence-of-mechanical-ventilation-on-vancomycin-pharmacokinetics-administered-by-continuous-infusion-in-critically-ill-patients
#5
Susanna Edith Medellín-Garibay, Silvia Romano-Moreno, Pilar Tejedor-Prado, Noelia Rubio-Álvaro, Aida Rueda-Naharro, Miguel Angel Blasco-Navalpotro, Benito García, Emilia Barcia
Pathophysiological changes involved on drug disposition in critically ill patients, should be considered on the dosing optimization of vancomycin administered by continuous infusion, and certain strategies must be applied to reach therapeutic targets on the first day of treatment. The aim of this study was to develop a population pharmacokinetic model of vancomycin to determine clinical covariates, including mechanical ventilation, that influence the wide variability of this antimicrobial. Vancomycin plasma concentrations from 54 critically ill patients were simultaneously analyzed by population pharmacokinetic approach...
September 11, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28836582/influences-of-renal-function-descriptors-on-population-pharmacokinetic-modeling-of-vancomycin-in-chinese-adult-patients
#6
Xi-Wei Ji, Shuang-Min Ji, Xiao-Rong He, Xiao Zhu, Rong Chen, Wei Lu
Vancomycin, a glycopeptide antibiotic for the treatment of grampositive infections, is mainly eliminated via glomerular filtration. Thus, its therapeutic effects are affected predominantly by renal function. The aim of this study was to develop a population pharmacokinetic model of vancomycin for Chinese adult patients and to investigate the influence of different renal function descriptors on the predictability of the model. A retrospective analysis was performed based on the blood concentrations of vancomycin in 218 Chinese adult patients...
August 24, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28807918/relationships-of-vancomycin-pharmacokinetics-to-body-size-and-composition-by-computed-tomography-analysis-a-novel-pharmacomorphomic-approach
#7
Manjunath P Pai, Brian A Derstine, Matt Lichty, Brian E Ross, June Sullivan, Grace L Su, Stewart C Wang
Antibiotics such as vancomycin are empirically dosed on body weight, which may not be optimal across the expanding adult body size distribution. Our aim was to compare the relationships between morphomic parameters generated from computed tomography images to conventional body size metrics as predictors of vancomycin pharmacokinetics (PK). This single center retrospective study included 300 patients with 1622 vancomycin concentration (52% trough) measurements. Bayesian estimation was used to compute individual vancomycin volume of distribution of the central compartment (Vc) and clearance (CL)...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28807910/24-hour-pharmacokinetic-relationships-for-vancomycin-and-novel-urinary-biomarkers-of-acute-kidney-injury
#8
J Nicholas O'Donnell, Nathaniel J Rhodes, Thomas P Lodise, Walter C Prozialeck, Cristina M Miglis, Medha Joshi, Natarajan Venkatesan, Gwendolyn Pais, Cameron Cluff, Peter C Lamar, Seema Briyal, John Z Day, Anil Gulati, Marc H Scheetz
Introduction: Vancomycin has been associated with acute kidney injury in preclinical and clinical settings, however the precise exposure profiles associated with vancomycin induced acute kidney injury has not been defined. We sought to determine pharmacokinetic/pharmacodynamics indices associated with the development of acute kidney injury using sensitive urinary biomarkers.Methods: Male Sprague-Dawley rats received clinical grade vancomycin or normal saline as an intraperitoneal injection. Total daily doses between 0 and 400 mg/kg/day were administered as single or 2 divided doses over a 24-hour period...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28776198/determining-the-optimal-vancomycin-daily-dose-for-pediatrics-a-meta-analysis
#9
REVIEW
Geisa Cristina da Silva Alves, Samuel Dutra da Silva, Virginia Paula Frade, Danielle Rodrigues, André de Oliveira Baldoni, Whocely Victor de Castro, Cristina Sanches
OBJECTIVE: The objective of this study was to check which initial dose of vancomycin is needed to achieve the therapeutic target that is currently used in pediatrics. METHODS: The search was conducted in the following data sources: Pubmed (1980-2017), the Cochrane Library, and Embase (1986-2017) and the references of the published studies; searches were performed using the key terms: child, children, pediatrics, infants and adolescents, vancomycin, pharmacokinetics, and pharmacodynamics...
August 4, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28705450/clinical-outcome-and-antimicrobial-therapeutic-drug-monitoring-for-the-treatment-of-infections-in-acute-burn-patients
#10
Anna Silva Machado, Maura S Oliveira, Cristina Sanches, Carlindo Vieira da Silva Junior, David S Gomez, Rolf Gemperli, Silvia Regina Cavani Jorge Santos, Anna S Levin
PURPOSE: In critical burn patients, the pharmacokinetic parameters (absorption, distribution, metabolism, and excretion) of many classes of drugs, including antibiotics, are altered. The aim of this study was to compare 2 groups of burn patients undergoing treatment for health care-associated infections with and without therapeutic drug monitoring. METHODS: A retrospective analysis of a clinical intervention (ie, a before/after study) was conducted with patients with health care-associated pneumonia, burn infection, bloodstream infection, and urinary tract infection in the burn intensive care unit of a tertiary care hospital...
July 10, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28675684/high-performance-liquid-chromatography-method-for-rich-pharmacokinetic-sampling-schemes-in-translational-rat-toxicity-models-with-vancomycin
#11
M D Joshi, J N O'Donnell, N Venkatesan, J Chang, H Nguyen, N J Rhodes, G Pais, R L Chapman, B Griffin, M H Scheetz
A translational need exists to understand and predict vancomycin-induced kidney toxicity. We describe: (i) a vancomycin high-performance liquid chromatography (HPLC) method for rat plasma and kidney tissue homogenate; (ii) a rat pharmacokinetic (PK) study to demonstrate utility; and (iii) a catheter retention study to enable future preclinical studies. Rat plasma and pup kidney tissue homogenate were analyzed via HPLC for vancomycin concentrations ranging from 3-75 and 15.1-75.5 μg/mL, respectively, using a Kinetex Biphenyl column and gradient elution of water with 0...
July 4, 2017: Clinical and Translational Science
https://www.readbyqxmd.com/read/28674307/effects-of-teicoplanin-on-the-pt-inr-controlled-by-warfarin-in-infection-patients
#12
Takafumi Nakano, Tomomi Nakamura, Yoshihio Nakamura, Keiichi Irie, Keisuke Sato, Kohichi Matsuo, Osamu Imakyure, Kentaro Ogata, Kenichi Mishima, Hidetoshi Kamimura
 Warfarin (WF) shows a number of interactions with other drugs, which alter its anticoagulant effects. The albumin binding interaction is one such pharmacokinetic mechanism of drug interaction with WF, which induces a rise in the free WF concentration and thus increases the risk of WF toxicity. Teicoplanin (TEIC) is an anti-methicillin-resistant Staphylococcus aureus drug, which also binds strongly to albumin in the plasma. Therefore, co-administration of TEIC may displace WF from the albumin binding site, and possibly result in a toxicity...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28650363/population-pharmacokinetics-and-pharmacodynamic-target-attainment-of-vancomycin-in-neonates-on-extracorporeal-life-support
#13
Jeffrey J Cies, Wayne S Moore, Kristen Nichols, Chad A Knoderer, Dominick M Carella, Arun Chopra
OBJECTIVES: To evaluate the population pharmacokinetics and pharmacodynamic target attainment of vancomycin in neonates with a contemporary ¼-inch extracorporeal life support circuit with a Quadrox-iD Pediatric oxygenator (Maquet Cardiovascular, LLC, Wayne, NJ). DESIGN: Retrospective medical record review. SETTING: Two free-standing tertiary/quaternary pediatric children's hospitals. PATIENTS: Neonates receiving either veno-arterial or veno-venous extracorporeal life support and vancomycin for empiric or definitive therapy with resulting serum concentrations...
June 22, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28646502/the-liver-gut-microbiota-axis-modulates-hepatotoxicity-of-tacrine-in-the-rat
#14
Lian Yee Yip, Chiu Cheong Aw, Sze Han Lee, Yi Shuen Hong, Han Chen Ku, Winston Hecheng Xu, Jessalyn Mei Xuan Chan, Eleanor Jing Yi Cheong, Kern Rei Chng, Amanda Hui Qi Ng, Niranjan Nagarajan, Ratha Mahendran, Yuan Kun Lee, Edward R Browne, Eric Chun Yong Chan
The gut microbiota possesses diverse metabolic activities but its contribution towards heterogeneous toxicological responses is poorly understood. Here, we elucidate the role of the liver-gut microbiota axis in underpinning the hepatotoxicity of tacrine. We employed an integrated strategy combining pharmacokinetics, toxicology, metabonomics, genomics and metagenomics to elucidate and validate the mechanism of tacrine-induced hepatotoxicity in Lister hooded rats. Pharmacokinetic studies in rats demonstrated 3...
June 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28640009/augmented-renal-clearance-using-population-based-pharmacokinetic-modeling-in-critically-ill-pediatric-patients
#15
Sean N Avedissian, Erin Bradley, Diana Zhang, John S Bradley, Lama H Nazer, Tri M Tran, Austin Nguyen, Jennifer Le
OBJECTIVES: The objectives of this study were to: 1) evaluate the prevalence of augmented renal clearance in critically ill pediatric patients using vancomycin clearance; 2) derive the pharmacokinetic model that best describes vancomycin clearance in critically ill pediatric patients; and 3) correlate vancomycin clearance with creatinine clearance estimated by modified Schwartz or Cockcroft-Gault. DESIGN: Retrospective, two-center, cohort study from 2003 to 2016...
September 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28625235/-pharmacokinetics-of-vancomycin-in-patients-with-severe-acute-pancreatitis-and-its-influencing-factors-analysis-of-7-years-data
#16
Juan He, Enqiang Mao, Feng Jing, Huiting Jiang, Wanhua Yang, Erzhen Chen
OBJECTIVE: To observe the change of the serum trough concentration and its pharmacokinetics of vancomycin in patients with severe acute pancreatitis (SAP), and to analyze the factors influencing vancomycin concentration. METHODS: A retrospective analysis was conducted. Steady-state trough concentrations of vancomycin from patients (18-80 years old) with SAP concomitantly with G(+) infection admitted to Intensive Care Unit (ICU) of Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine from January 2010 to December 2016 were enrolled...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28617036/an-lc-ms-ms-method-to-determine-vancomycin-in-plasma-total-and-unbound-urine-and-renal-replacement-therapy-effluent
#17
Suzanne L Parker, Yarmarly C Guerra Valero, Jenny L Ordóñez Mejia, Claire Roger, Jeffrey Lipman, Jason A Roberts, Steven C Wallis
AIM: Critical illness and medical interventions, such as renal replacement therapy, can cause changes to vancomycin pharmacokinetics and lead to suboptimal dosing. To comprehensively characterize vancomycin pharmacokinetic a method must measure vancomycin in a range of clinical matrices. RESULTS: A LC-MS/MS method was developed using hydrophilic interaction liquid chromatography and microsample volumes, where possible. For all matrices, the linear concentration range was 1-100 μg/ml, interassay accuracy and precision was within 15%, and recovery above 80%...
June 2017: Bioanalysis
https://www.readbyqxmd.com/read/28607023/pharmacokinetic-assessment-of-vancomycin-loading-dose-in-critically-ill-patients
#18
Osvaldo Álvarez, Jose Cristian Plaza-Plaza, Manuel Ramirez, Alexis Peralta, Cristián A Amador, Roberto Amador
The vancomycin loading dose (LD) of 25 to 30 mg/kg is a frequently practiced strategy to achieve effective concentrations from the first-treatment dose. However, considering only the body weight for dosing might be inadequate in critically ill patients due to pharmacokinetics changes. We sought to assess achieving optimal trough serum levels of vancomycin and AUC0-24/MIC in the first 24 h of treatment by using an LD based on population pharmacokinetic parameters of critically ill patients. We performed a concurrent cohort study over 22 months of patients with severe sepsis who received intravenous vancomycin...
August 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28532398/clinical-outcomes-of-linezolid-and-vancomycin-in-patients-with-nosocomial-pneumonia-caused-by-methicillin-resistant-staphylococcus-aureus-stratified-by-baseline-renal-function-a-retrospective-cohort-analysis
#19
Ping Liu, Blair Capitano, Amy Stein, Ali A El-Solh
BACKGROUND: The primary objective of this study is to assess whether baseline renal function impacts treatment outcomes of linezolid and vancomycin (with a dose-optimized regimen) for methicillin-resistant Staphylococcus aureus (MRSA) pneumonia. METHODS: We conducted a retrospective cohort analysis of data generated from a prospective, randomized, controlled clinical trial (NCT 00084266). The analysis included 405 patients with culture-proven MRSA pneumonia. Baseline renal function was stratified based on creatinine clearance...
May 22, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28529861/local-intra-wound-administration-of-powdered-antibiotics-in-orthopaedic-surgery
#20
REVIEW
Andrew N Fleischman, Matthew S Austin
Surgical site infection (SSI) is one of the most common complications after orthopaedic surgery, leading to significant morbidity and its associated costs. Surgical guidelines strongly recommend the use of systemic antibiotic prophylaxis to reduce the risk for developing SSI. Locally administered powdered antibiotics have the potential to provide remarkably high intra-wound concentrations without risk for systemic toxicity. However, a paucity of high quality evidence in the orthopaedic literature has prevented widespread adoption of this technique...
2017: Journal of bone and joint infection
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