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Rapid streptococcal tests

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https://www.readbyqxmd.com/read/28197223/a-multifaceted-approach-to-decrease-inappropriate-antibiotic-use-in-a-pediatric-outpatient-clinic
#1
Jaffar A Al-Tawfiq, Amel H Alawami
BACKGROUND: Inappropriate use of antimicrobial agents is the major cause for the development of resistance. Thus, it is important to include outpatient clinics in the development of antibiotic stewardship program. METHODS: We report a multifaceted approach to decrease inappropriate antibiotic use in upper respiratory tract infections (URTIs) in an outpatient pediatric clinic. The interventions included educational grand round, academic detailing, and prospective audit and feedback and peer comparison...
January 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28052179/sensitivity-for-diagnosing-group-a-streptococcal-pharyngitis-from-manufacturers-is-10-higher-than-reported-in-peer-reviewed-publications
#2
Raj Vachhani, Toral Patel, Robert M Centor, Carlos A Estrada
OBJECTIVES: Meta-analyses based on peer-reviewed publications report a sensitivity of approximately 85% for rapid antigen streptococcus tests to diagnose group A streptococcal (GAS) pharyngitis. Because these meta-analyses excluded package inserts, we examined the test characteristics of rapid antigen streptococcal tests and molecular methods that manufacturers report in their package inserts. METHODS: We included tests available in the US market (Food and Drug Administration, period searched 1993-2015) and used package insert data to calculate pooled sensitivity and specificity...
January 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/27997479/potential-for-pharmacy-public-health-collaborations-using-pharmacy-based-point-of-care-testing-services-for-infectious-diseases
#3
Paul O Gubbins, Michael E Klepser, Alex J Adams, David M Jacobs, Kelly M Percival, Gregory B Tallman
CONTEXT: Health care professionals must continually identify collaborative ways to combat antibiotic resistance while improving community health and health care delivery. Clinical Laboratory Improvement Amendments of 1988 (CLIA)-waived point-of-care (POC) testing (POCT) services for infectious disease conducted in community pharmacies provide a means for pharmacists to collaborate with prescribers and/or public health officials combating antibiotic resistance while improving community health and health care delivery...
December 16, 2016: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/27989256/junctional-tachycardia-in-a-child-with-non-rheumatic-fever-streptococcal-pharyngitis
#4
Neha Bansal, Peter P Karpawich, Chenni S Sriram
Accelerated junctional rhythm has been reported in children in the setting of acute rheumatic fever; however, we describe a hitherto unreported case of isolated junctional tachycardia in a child with streptococcal pharyngitis, not meeting revised Jones criteria for rheumatic fever. A previously healthy, 9-year-old girl presented to the emergency department with complaints of sore throat, low-grade fever, and intermittent chest pain. She was found to have a positive rapid streptococcal antigen test. The initial electrocardiogram showed junctional tachycardia with atrioventricular dissociation in addition to prolonged and aberrant atrioventricular conduction...
December 19, 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/27981538/diagnosis-and-treatment-of-acute-pharyngitis-tonsillitis-a-preliminary-observational-study-in-general-medicine
#5
F Di Muzio, M Barucco, F Guerriero
OBJECTIVE: According to recent observations, the insufficiently targeted use of antibiotics is creating increasingly resistant bacterial strains. In this context, it seems increasingly clear the need to resort to extreme and prudent rationalization of antibiotic therapy, especially by the physicians working in primary care units. In clinical practice, actually the general practitioner often treats multiple diseases without having the proper equipment. In particular, the use of a dedicated, easy to use diagnostic test would be one more weapon for the correct diagnosis and treatment of acute pharyngo-tonsillitis...
December 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27939516/nonrheumatic-myopericarditis-post-acute-streptococcal-pharyngitis-an-uncommon-cause-of-sore-throat-with-st-segment-elevation
#6
Ali Pourmand, Daniel Gelman, Steven Davis, Hamid Shokoohi
Nonrheumatic myopericarditis is an uncommon complication of acute pharyngitis caused by Group A Streptococcal infection (GAS). While the natural history of carditis complicating acute rheumatic fever is well established, the incidence, pathophysiology and clinical course of nonrheumatic myopericarditis are ill defined. Advances in rapid bedside testing for both myocardial injury and GAS pharyngitis have allowed for increasing recognition of this uncommon complication in patients presenting with a sore throat with associated chest discomfort...
December 8, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27907154/pheromone-recognition-and-selectivity-by-comr-proteins-among-streptococcus-species
#7
Erin Shanker, Donald A Morrison, Antoine Talagas, Sylvie Nessler, Michael J Federle, Gerd Prehna
Natural transformation, or competence, is an ability inherent to bacteria for the uptake of extracellular DNA. This process is central to bacterial evolution and allows for the rapid acquirement of new traits, such as antibiotic resistance in pathogenic microorganisms. For the Gram-positive bacteria genus Streptococcus, genes required for competence are under the regulation of quorum sensing (QS) mediated by peptide pheromones. One such system, ComRS, consists of a peptide (ComS) that is processed (XIP), secreted, and later imported into the cytoplasm, where it binds and activates the transcription factor ComR...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27903001/right-in-front-of-our-eyes-evolution-of-streptococcal-toxic-shock-syndrome-with-ischemic-optic-neuropathy
#8
Salaheldin M Elhamamsy, Mazen O Al-Qadi, Taro Minami, Marguerite Neill
INTRODUCTION: Toxic shock syndrome occurs from dysregulation of host inflammatory responses. Toxin- producing strains of Group A streptococcus cause TSS. Ischemic optic neuropathy rarely complicates septic shock. We present a rare case of streptococcal pharyngitis complicated by septic arthritis and TSS with reversible blindness due to non-arteritic ischemic optic neuropathy. CASE: A 28-year-old man drove to our ED with exudative pharyngitis. A rapid streptococcal test was positive...
December 1, 2016: Rhode Island Medical Journal
https://www.readbyqxmd.com/read/27783124/a-new-immunoassay-of-serum-antibodies-against-peste-des-petits-ruminants-virus-using-quantum-dots-and-a-lateral-flow-test-strip
#9
Si Cheng, Jie Sun, Junxing Yang, Jianqiang Lv, Feng Wu, Yanxing Lin, Lishan Liao, Yiyou Ye, Chenfu Cao, Liurong Fang, Qunyi Hua
A fast and ultrasensitive test-strip system combining quantum dots (QDs) with a lateral-flow immunoassay strip (LFIAS) was established for detection of Peste des petits ruminants virus (PPRV) antibody. The highly luminescent water-soluble carboxyl-functionalized QDs were used as the signal output and were conjugated to streptococcal protein G (SPG), which was capable of binding to immunoglobulin G (IgG) from many species through an amide bond to capture the target PPRV IgGs. The PPRV N protein, which was immobilized on the detection zone of the test strip, was expressed by transfecting recombinant Bacmid-PPRV-N with Lipofect into Sf9 insect cells...
January 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27658382/development-and-performance-evaluation-of-a-recombinase-polymerase-amplification-assay-for-the-rapid-detection-of-group-b-streptococcus
#10
Christina Clarke, Louise O'Connor, Heather Carré-Skinner, Olaf Piepenburg, Terry J Smith
BACKGROUND: Despite the implementation of prevention guidelines, group B Streptococcal (GBS) infection remains a leading cause of sepsis, pneumonia, and meningitis, resulting in significant neonatal morbidity and mortality. Preventive approaches that identify women at risk of transmitting GBS have reduced the incidence of neonatal GBS disease, and dramatically decreased the associated mortality rates. However, there is an on-going requirement for a near-patient diagnostic test for GBS that can be carried out at the time of delivery, ideally in the labour ward setting, particularly for women of unknown GBS colonisation status at the time of delivery...
2016: BMC Microbiology
https://www.readbyqxmd.com/read/27628908/the-abcs-of-perineal-streptococcal-dermatitis-case-series-and-review-of-the-literature
#11
Connie Zhang, Richard M Haber
Perineal streptococcal dermatitis (PSD) is largely known to be caused by group A β-hemolytic Streptococcus (GAS). We would like to bring cases of non-GAS PSD to the attention of dermatologists, as there are implications for workup and therapy. We report 3 pediatric cases of PSD: 1 caused by GAS, 1 caused by group B β-hemolytic Streptococcus (GBS), and 1 associated with group C β-hemolytic Streptococcus (GCS). GBS and GCS are very rarely reported in pediatric cases of PSD. The literature on non-GAS PSD is reviewed, which additionally revealed several instances of PSD caused by group G β-hemolytic Streptococcus (GGS) and Staphylococcus aureus GBS, GCS, GGS, and S aureus are significant causes of PSD to consider, particularly among adult patients, based on our encountered cases and the literature...
September 14, 2016: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/27579047/operator-influence-on-blinded-diagnostic-accuracy-of-point-of-care-antigen-testing-for-group-a-streptococcal-pharyngitis
#12
Carla Penney, Robert Porter, Mary O'Brien, Peter Daley
Background. Acute pharyngitis caused by Group A Streptococcus (GAS) is a common presentation to pediatric emergency departments (ED). Diagnosis with conventional throat culture requires 18-24 hours, which prevents point-of-care treatment decisions. Rapid antigen detection tests (RADT) are faster, but previous reports demonstrate significant operator influence on performance. Objective. To measure operator influence on the diagnostic accuracy of a RADT when performed by pediatric ED nurses and clinical microbiology laboratory technologists, using conventional culture as the reference standard...
2016: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/27493985/a-study-to-determine-if-addition-of-palatal-petechiae-to-centor-criteria-adds-more-significance-to-clinical-diagnosis-of-acute-strep-pharyngitis-in-children
#13
Kumara V Nibhanipudi
Objective. A study to determine if addition of palatal petechiae to Centor criteria adds more value for clinical diagnosis of acute strep pharyngitis in children. Hypothesis. In children, Centor Criteria does not cover all the symptoms and signs of acute strep pharyngitis. We hypothesize that addition of palatal petechiae to Centor Criteria will increase the possibility of clinical diagnosis of group A streptococcal pharyngitis in children. Methods. One hundred patients with a complaint of sore throat were enrolled in the study...
2016: Global Pediatric Health
https://www.readbyqxmd.com/read/27440817/point-counterpoint-a-nucleic-acid-amplification-test-for-streptococcus-pyogenes-should-replace-antigen-detection-and-culture-for-detection-of-bacterial-pharyngitis
#14
Bobbi S Pritt, Robin Patel, Thomas J Kirn, Richard B Thomson
Nucleic acid amplification tests (NAATs) have frequently been the standard diagnostic approach when specific infectious agents are sought in a clinic specimen. They can be applied for specific agents such as S. pyogenes, or commercial multiplex NAATs for detection of a variety of pathogens in gastrointestinal, bloodstream, and respiratory infections may be used. NAATs are both rapid and sensitive. For many years, S. pyogenes testing algorithms used a rapid and specific group A streptococcal antigen test to screen throat specimens, followed, in some clinical settings, by a throat culture for S...
October 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27386721/common-questions-about-streptococcal-pharyngitis
#15
Monica G Kalra, Kim E Higgins, Evan D Perez
Group A beta-hemolytic streptococcal (GABHS) infection causes 15% to 30% of sore throats in children and 5% to 15% in adults, and is more common in the late winter and early spring. The strongest independent predictors of GABHS pharyngitis are patient age of five to 15 years, absence of cough, tender anterior cervical adenopathy, tonsillar exudates, and fever. To diagnose GABHS pharyngitis, a rapid antigen detection test should be ordered in patients with a modified Centor or FeverPAIN score of 2 or 3. First-line treatment for GABHS pharyngitis includes a 10-day course of penicillin or amoxicillin...
July 1, 2016: American Family Physician
https://www.readbyqxmd.com/read/27385362/group-b-streptococcal-immunisation-of-pregnant-women-for-the-prevention-of-early-and-late-onset-group-b-streptococcal-infection-of-the-neonate-as-well-as-adult-disease
#16
Anna L Kenchington, Ronald F Lamont
Early onset neonatal Group B streptococcal disease is preventable. Intrapartum antibiotic prophylaxis has resulted in a significant reduction in neonatal mortality and morbidity. National guidelines for the selection of women eligible for intrapartum antibiotic prophylaxis, whether screening-based or risk-based, differ according to the local burden of disease. Despite the introduction of intrapartum antibiotic prophylaxis, there remains a significant burden of disease, which can be resolved by better adherence to guidelines, rapid identification of maternal colonization or in the future, vaccination...
January 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/27313620/group-b-streptococcus-colonization-among-pregnant-women-attending-antenatal-care-at-tertiary-hospital-in-rural-southwestern-uganda
#17
Abdul Namugongo, Joel Bazira, Yarine Fajardot, Ngonzi Joseph
Objectives. This study sought to determine the prevalence and factors associated with group B streptococcal anogenital colonization among pregnant women attending antenatal care at Mbarara Regional Referral Hospital, a tertiary hospital. Methods. Cross-sectional study where 309 pregnant women ≥ thirty-five weeks of gestation attending antenatal clinic were consecutively recruited between January and March 2015. Anovaginal swabs were collected and tested qualitatively using rapid visual immunoassay GBS test kits for presence of GBS antigens...
2016: International Journal of Microbiology
https://www.readbyqxmd.com/read/27067554/community-pharmacist-physician-collaborative-streptococcal-pharyngitis-management-program
#18
Donald G Klepser, Michael E Klepser, Allison M Dering-Anderson, Jacqueline A Morse, Jaclyn K Smith, Stephanie A Klepser
OBJECTIVES: To describe patient outcomes associated with a community pharmacy-based, collaborative physician-pharmacist group A Streptococcus (GAS) management program. SETTING: Fifty-five chain and independent community pharmacies in Michigan, Minnesota, and Nebraska. PRACTICE INNOVATION: Pharmacists screened clinically stable adult patients who presented with signs and symptoms consistent with GAS pharyngitis from October 1, 2013, to August 1, 2014, by means of Centor criteria, and performed a physical assessment followed by a rapid antigen detection test (RADT) for eligible patients...
May 2016: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/26999012/the-effect-of-rapid-antigen-detection-test-on-antibiotic-prescription-decision-of-clinicians-and-reducing-antibiotic-costs-in-children-with-acute-pharyngitis
#19
Engin Kose, Seda Sirin Kose, Deniz Akca, Kerem Yildiz, Cengizhan Elmas, Mustafa Baris, Murat Anil
We aimed to investigate the effect of rapid antigen detection test (RADT) in the diagnosis of streptococcal pharyngitis, its impact on antibiotic prescription decision of pediatricians and influence on reduction of antibiotic treatment costs in children with pharyngitis. The study group consisted of 223 patients who were diagnosed with pharyngitis by pediatricians. The sensitivity and specificity of RADT were 92.1% (95% Cl: 78.6-98.3%) and 97.3% (95% Cl: 93.8-99.1%), respectively. In the first assessment, before performing RADT, pediatricians decided to prescribe antibiotics for 178 (79...
August 2016: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/26955583/purpura-fulminans-secondary-to-rickettsial-infections-a-case-series
#20
Saloni Katoch, Ravindra Kallappa, Murugesh B Shamanur, Sneha Gandhi
Purpura fulminans (PF) is a descriptive term used to describe a heterogeneous group of disorders characterized by rapidly progressive purpuric lesions that may develop into extensive areas of skin necrosis, and peripheral gangrene. This rare disorder is associated with laboratory evidence of consumptive coagulopathy and is often fatal. PF is usually associated with many infections, most notably with meningococcal, staphylococcal, and streptococcal infections. However, there are very few reports of this entity with spotted fever and scrub typhus from India...
January 2016: Indian Dermatology Online Journal
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