Read by QxMD icon Read

leukocyte esterase

Xi Zhang, Nicole Rowan, Bethann Mangel Pflugeisen, Sanjin Alajbegovic
BACKGROUND: Antibiotics are overprescribed for abnormal urine tests including asymptomatic bacteriuria (AB), contributing to rising antimicrobial resistance rates. Pharmacists reviewed urine cultures daily from emergency department (ED) encounters to assess antibiotic appropriateness. We studied antibiotic prescribing practices and assessed compliance to national guidelines, correlations with urine analysis (UA) components, and opportunities for antimicrobial stewardship in the ED. METHODS: This quality improvement project (QIP) was a prospective cohort study at a community hospital ED, with data collected from finalized urine cultures resulting October 30, 2014 through January 5, 2015...
December 16, 2016: American Journal of Emergency Medicine
Pradip P Chaudhari, Michael C Monuteaux, Richard G Bachur
BACKGROUND: Varying urine white blood cell (WBC) thresholds have been recommended for the presumptive diagnosis of urinary tract infection (UTI) among young infants. These thresholds have not been studied with newer automated urinalysis systems that analyze uncentrifuged urine that might be influenced by urine concentration. Our objective was to determine the optimal urine WBC threshold for UTI in young infants by using an automated urinalysis system, stratified by urine concentration...
November 2016: Pediatrics
Katerina G Oikonomou, Adib Alhaddad
INTRODUCTION: The diagnostic validity of urinalysis in asymptomatic Hemodialysis (HD) patients is low and there is limited data on the diagnostic value of urinalysis in HD patients with fever, sepsis, or suspected Urinary Tract Infection (UTI). AIM: The aim of this study was to assess the sensitivity, specificity, positive and negative predictive value of pyuria, bacteriuria, Leukocyte Esterase (LE) and nitrite positivity in symptomatic, febrile or/and septic HD patients...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
Samuel Bailin, Nicolas Noiseux, Jean M Pottinger, Birgir Johannsson, Ambar Haleem, Sarah Johnson, Loreen A Herwaldt
OBJECTIVE To identify predictors of treatment for urinary tract infections (UTI) among patients undergoing total hip (THA) or knee (TKA) arthroplasties and to assess an intervention based on these predictors. DESIGN We conducted a retrospective cohort study of 200 consecutive patients undergoing THA/TKA between February 21, 2011, and June 30, 2011, to identify predictors of treatment for UTI and a prospective cohort study of 50 patients undergoing these procedures between May 21, 2012, and July 17, 2012, to assess the association of signs or symptoms and UTI treatment...
November 21, 2016: Infection Control and Hospital Epidemiology
Wonmok Lee, Yukyung Kim, Soonhee Chang, A-Jin Lee, Chang-Ho Jeon
BACKGROUND: Vitamin C may interfere with the results of urine dipstick tests. We investigated the incidence of urinary vitamin C and its interference with urine dipstick reagents using a vitamin C dipstick. METHODS: The incidence of urinary vitamin C was determined in patients and healthy individuals undergoing routine medical check-ups. Interference tests were performed using samples with various amounts of added vitamin C. For clinical samples, we identified false-negative dipstick glucose, hemoglobin, and leukocyte esterase results based on the urine sediment and serum glucose results...
October 24, 2016: Journal of Clinical Laboratory Analysis
Friedrich Boettner, Gabriele Koehler, Alexander Wegner, Tom Schmidt-Braekling, Georg Gosheger, Christian Goetze
OBJECTIVE: The current study investigates the diagnostic accuracy of the criteria described for frozen sections and whether modern leukocyte specific staining techniques including leukocyte peroxidase and Naphtol-AS-D-chloroacetate-esterase will improve the accuracy of the intra-operative histology. METHOD: 77 patients undergoing revision total hip and knee arthroplasty were included in this retrospective study. Patients were grouped into septic and aseptic based on intraoperative cultures...
2016: Open Orthopaedics Journal
Hong Phuoc Duong, Karl Martin Wissing, Nathalie Tram, Georges Mascart, Philippe Lepage, Khalid Ismaili
Automated flow cytometry of urine remains an incompletely validated method to rule out urinary tract infection (UTI) in children. This cross-sectional analytical study was performed to compare the predictive values of flow cytometry and a dipstick test as initial diagnostic tests for UTI in febrile children and prospectively included 1,106 children (1,247 episodes). Urine culture was used as the gold standard test for diagnosing UTI. The performance of screening tests to diagnose UTI were established using receiver operating characteristic (ROC) analysis...
December 2016: Journal of Clinical Microbiology
R C Oey, J J Kuiper, H R van Buuren, R A de Man
BACKGROUND: The gold standard to diagnose spontaneous bacterial peritonitis (SBP) is a polymorphonuclear neutrophil count ≥ 250 cells/µl in ascitic fluid. This test is laborious and expensive. Urine reagent strips measuring leukocyte esterase activity have been proposed as a rapid and inexpensive alternative. The aim of this study was to assess the diagnostic accuracy of the Combur reagent strip for diagnosing SBP. Furthermore the possible advantage of a photospectrometer reading over visual reading of the strip was investigated...
July 2016: Netherlands Journal of Medicine
K-D Heller
BACKGROUND: Periprothetic infection after primary or revision arthroplasty is of increasing importance. The incidence of infection in primary arthroplasty is approximately 1 %. Revision arthroplasty has higher infection rates, which increase with the number of revision surgeries. Aim of this Paper: An overview of the current diagnosis of periprosthetic infection. METHODS: This selective analysis is based on a lecture by the author at the DKOU 2015. RESULTS: Periprosthetic infection is taken as having been demonstrated when either two periprosthetic cultures contain the same microorganism, or if there is a fistula communicating with a joint...
August 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
David Clinton McNabb, Douglas A Dennis, Raymond H Kim, Todd M Miner, Charlie C Yang, Jason M Jennings
BACKGROUND: Use of leukocyte esterase (LE) testing of synovial fluid as an adjunct to the infection workup in total joint arthroplasty patients has been advocated. The purpose of this study was to determine the false positive rate of this test. METHODS: Two hundred patients with the diagnosis of degenerative osteoarthritis undergoing a total knee arthroplasty were identified for this study. The knee joint was aspirated under sterile conditions before performing the total knee arthroplasty...
January 2017: Journal of Arthroplasty
Kumara V Nibhanipudi
OBJECTIVE: A study to compare the usage of throat swab testing for leukocyte esterase on a test strip(urine dip stick-multi stick) to rapid strep test for rapid diagnosis of Group A Beta hemolytic streptococci in cases of acute pharyngitis in children. HYPOTHESIS: The testing of throat swab for leukocyte esterase on test strip currently used for urine testing may be used to detect throat infection and might be as useful as rapid strep. METHODS: All patients who come with a complaint of sore throat and fever were examined clinically for erythema of pharynx, tonsils and also for any exudates...
2015: Global Pediatric Health
M C Wyatt, A D Beswick, S K Kunutsor, M J Wilson, M R Whitehouse, A W Blom
BACKGROUND: Synovial biomarkers have recently been adopted as diagnostic tools for periprosthetic joint infection (PJI), but their utility is uncertain. The purpose of this systematic review and meta-analysis was to synthesize the evidence on the accuracy of the alpha-defensin immunoassay and leukocyte esterase colorimetric strip test for the diagnosis of PJI compared with the Musculoskeletal Infection Society diagnostic criteria. METHODS: We performed a systematic review to identify diagnostic technique studies evaluating the accuracy of alpha-defensin or leukocyte esterase in the diagnosis of PJI...
June 15, 2016: Journal of Bone and Joint Surgery. American Volume
S J M Middelkoop, L J van Pelt, G A Kampinga, J C Ter Maaten, C A Stegeman
BACKGROUND: Urinary tract infections (UTIs) are frequently encountered. Diagnostics of UTI (urine dipstick, Gram stain, urine culture) lack proven accuracy and precision in the emergency department. Utility of automated urinalysis shows promise for UTI diagnosis but has not been validated. METHODS: A total of 381 cases presenting with fever and/or clinically suspected UTI were analyzed. Diagnosis was based on clinical presentation, urine culture and/ or blood culture, and successful treatment...
August 2016: American Journal of Emergency Medicine
Fiona Karen Harlan, Jason Scott Lusk, Breanna Michelle Mohr, Anthony Peter Guzikowski, Robert Hardy Batchelor, Ying Jiang, John Joseph Naleway
Lysosomes are acidic cytoplasmic organelles that are present in all nucleated mammalian cells and are involved in a variety of cellular processes including repair of the plasma membrane, defense against pathogens, cholesterol homeostasis, bone remodeling, metabolism, apoptosis and cell signaling. Defects in lysosomal enzyme activity have been associated with a variety of neurological diseases including Parkinson's Disease, Lysosomal Storage Diseases, Alzheimer's disease and Huntington's disease. Fluorogenic lysosomal staining probes were synthesized for labeling lysosomes and other acidic organelles in a live-cell format and were shown to be capable of monitoring lysosomal metabolic activity...
2016: PloS One
Tamar R Lubell, David Schnadower, Stephen B Freedman, Charles G Macias, Dewesh Agrawal, Nathan Kuppermann, Peter S Dayan
BACKGROUND: Few data exist on the presentations and clinical courses of infants with enterococcal urinary tract infections (UTI). The objective of this study was to compare the clinical presentation, sensitivity of urinalysis (UA) and Gram's stain, radiological abnormalities and adverse events of febrile infants with enterococcal UTIs to those with Gram-negative UTIs. METHODS: Retrospective study of febrile (≥38.0°C) infants 29-60 days of age with UTIs at 20 emergency departments...
September 2016: Pediatric Infectious Disease Journal
F A Kaiksow, D Bhatnagar
A 26-year-old woman with no prior medical history presented post-partum with altered mental status. She had no complications during pregnancy and had a spontaneous vaginal delivery at term one week prior. On post-partum day five, she began complaining of headaches, initially responsive to ibuprofen but eventually worsened with no relief. On the evening of admission, her boyfriend noted strange behavior and movements consistent with a tonic-clonic seizure. On the way to the hospital, she had two more similar seizures witnessed by emergency medical serevices (EMS)...
May 2015: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
Rebecca Anne Shuford, Caleb R Dulaney, Omer L Burnett, Kevin W Byram, Andrew M McDonald
PURPOSE: The aims of this study were to analyze the effectiveness of urinalysis parameters in predicting positive urine culture and to characterize urinary tract infections in gynecologic cancer patients receiving pelvic radiotherapy. METHODS: The records of 134 women receiving pelvic radiotherapy were retrospectively analyzed with a total of 241 urine specimens. Dipstick, urine microscopy, and urine culture data were recorded. Sensitivity, specificity, positive and negative predictive values, and diagnostic odds ratios of dipstick and microscopy components for predicting positive urine culture were calculated...
April 21, 2016: International Journal of Gynecological Cancer
Eric H Tischler, Darren R Plummer, Antonia F Chen, Craig J Della Valle, Javad Parvizi
BACKGROUND: Adverse local tissue reactions (ALTRs) and periprosthetic joint infection can occur after metal-on-metal total hip arthroplasty (THA), both potentially generating purulent synovial fluid (SF) and elevated white cell count. This makes it difficult to distinguish between diagnoses; therefore, we evaluated leukocyte esterase (LE) strip test's reliability in ruling out periprosthetic joint infection in ALTR revision THA. METHODS: Sixty-one patients with ALTRs and an LE strip test were evaluated, excluding 15 cases with SF metallic debris...
October 2016: Journal of Arthroplasty
Chiung-Wen Hu, Ying-Ming Shih, Hung-Hsin Liu, Yi-Chen Chiang, Chih-Ming Chen, Mu-Rong Chao
N-nitrosamines (NAms) are well-documented for their carcinogenic potential. Human exposure to NAms may arise from the daily environment and endogenous formation via the reaction of secondary amines with nitrites or from bacteria infection. We describe the use of isotope dilution online solid-phase extraction (SPE) LC-MS/MS to quantify nine NAms in human urine. This method was validated and further applied to healthy subjects and patients with urinary tract infection (UTI). N-nitrosodimethylamine (NDMA), N-nitrosomethylethylamine (NMEA), N-nitrosopyrrolidine (NPYR) and N-nitrosomorpholine (NMOR) were analyzed with an APCI source, while N-nitrosodiethylamine (NDEA), N-nitrosopiperidine (NPIP), N-nitrosodi-n-propylamine (NDPA), N-nitrosodibutylamine (NDBA) and N-nitrosodiphenylamine (NDPhA) were quantified with an ESI source, due to their effect on the sensitivity and chromatography...
June 5, 2016: Journal of Hazardous Materials
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"