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diagnostic test interpretation

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https://www.readbyqxmd.com/read/29223964/assessing-stakeholder-perceptions-of-the-acceptability-and-feasibility-of-national-scale-up-for-a-dual-hiv-syphilis-rapid-diagnostic-test-in-malawi
#1
Brandy L Peterson Maddox, Shauntā S Wright, Hazel Namadingo, Virginia B Bowen, Geoffrey A Chipungu, Mary L Kamb
OBJECTIVES: The WHO recommends pregnant women receive both HIV and syphilis testing at their first antenatal care visit, as untreated maternal infections can lead to severe, adverse pregnancy outcomes. One strategy for increasing testing for both HIV and syphilis is the use of point-of-care (rapid) diagnostic tests that are simple, proven effective and inexpensive. In Malawi, pregnant women routinely receive HIV testing, but only 10% are tested for syphilis at their first antenatal care visit...
December 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/29222573/incidence-and-causes-of-overdiagnosis-of-optic-neuritis
#2
Leanne Stunkel, Nathan H Kung, Bradley Wilson, Collin M McClelland, Gregory P Van Stavern
Importance: Diagnostic error is an important source of medical error. Overdiagnosis of optic neuritis may prompt unnecessary and costly diagnostic tests, procedures, and treatments. Objective: To assess the incidence of and characterize factors contributing to overdiagnosis of acute optic neuritis. Design, Setting, and Participants: In this retrospective clinic-based cross-sectional study of new patient encounters, 122 patients referred for acute optic neuritis at a university-based Midwestern neuro-ophthalmology clinic between January 2014 and October 2016 were studied...
December 7, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29220354/interpreting-ambiguous-trace-results-in-schistosoma-mansoni-cca-tests-estimating-sensitivity-and-specificity-of-ambiguous-results-with-no-gold-standard
#3
Michelle N Clements, Christl A Donnelly, Alan Fenwick, Narcis B Kabatereine, Sarah C L Knowles, Aboulaye Meité, Eliézer K N'Goran, Yolisa Nalule, Sarah Nogaro, Anna E Phillips, Edridah Muheki Tukahebwa, Fiona M Fleming
BACKGROUND: The development of new diagnostics is an important tool in the fight against disease. Latent Class Analysis (LCA) is used to estimate the sensitivity and specificity of tests in the absence of a gold standard. The main field diagnostic for Schistosoma mansoni infection, Kato-Katz (KK), is not very sensitive at low infection intensities. A point-of-care circulating cathodic antigen (CCA) test has been shown to be more sensitive than KK. However, CCA can return an ambiguous 'trace' result between 'positive' and 'negative', and much debate has focused on interpretation of traces results...
December 8, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29218886/clingen-cancer-somatic-working-group-standardizing-and-democratizing-access-to-cancer-molecular-diagnostic-data-to-drive-translational-research
#4
Subha Madhavan, Deborah Ritter, Christine Micheel, Shruti Rao, Angshumoy Roy, Dmitriy Sonkin, Matthew Mccoy, Malachi Griffith, Obi L Griffith, Peter Mcgarvey, Shashikant Kulkarni
A growing number of academic and community clinics are conducting genomic testing to inform treatment decisions for cancer patients (1). In the last 3-5 years, there has been a rapid increase in clinical use of next generation sequencing (NGS) based cancer molecular diagnostic (MolDx) testing (2). The increasing availability and decreasing cost of tumor genomic profiling means that physicians can now make treatment decisions armed with patient-specific genetic information. Accumulating research in the cancer biology field indicates that there is significant potential to improve cancer patient outcomes by effectively leveraging this rich source of genomic data in treatment planning (3)...
2018: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/29215188/pcr-test-in-induced-sputum-of-patients-with-pulmonary-tuberculosis
#5
Verônica da Silva Paiva, Fernanda Luiza Staub, Dirceu Felipe Valentini, Regina Bones Barcellos, Karen Barros Schmid, Elis Regina Dalla Costa, Maria Lucia Rosa Rossetti, Paulo de Tarso Roth Dalcin, Denise Rossato Silva
INTRODUCTION: Induced sputum (IS) is an alternative method of obtaining sputum, but IS smears are frequently negative. Culture is more time-consuming in its results, and less useful to guide the diagnosis. Polymerase chain reaction (PCR) is the most common methodology for rapid diagnosis of TB, and few studies evaluated its role in IS samples. OBJECTIVES: The objective of this study is to determine the diagnostic yield of PCR for TB compared with culture in IS samples...
December 7, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29213526/mini-mental-state-exam-for-children-mmc-in-children-with-hemiplegic-cerebral-palsy
#6
Ricardo Moura, Peterson Marco Oliveira Andrade, Patrícia Lemos Bueno Fontes, Fernanda Oliveira Ferreira, Larissa de Souza Salvador, Maria Raquel Santos Carvalho, Vitor Geraldi Haase
Cognitive impairment is frequent in cerebral palsy (CP) and there is a lack of multiprofessional screening instruments. OBJECTIVE: The aim of this study was to investigate the utility of the Mini-Mental State Examination for Children (MMC), an adapted version of the Mini-Mental State Examination, in screening for cognitive impairments in children with CP. METHODS: We assessed 397 Brazilian children, 310 with typical development and 87 with CP (hemiplegic and quadriplegic forms), aged 5-16 years...
July 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29209493/comparison-of-atopy-patch-testing-to-skin-prick-testing-for-diagnosing-mite-induced-atopic-dermatitis-a-systematic-review-and-meta-analysis
#7
REVIEW
Yumei Liu, Jianglong Peng, Ying Zhou, Yubao Cui
Background: Atopic dermatitis (AD) can occur after contact with aeroallergens like house dust mites, pollen, and animal dander. Despite its controversial diagnostic value, the atopy patch test (APT) has been used as an important tool in the diagnosis of AD caused by house dust mites. Here, we present a meta-analysis comparing APT to the common skin prick test (SPT) in the diagnosis of mite-induced AD. Methods: A structured search was performed using online databases and bibliographies published as of April 30, 2017...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/29208530/analytical-performances-of-simultaneous-detection-of-hiv-1-hiv-2-and-hepatitis-c-specific-antibodies-and-hepatitis-b-surface-antigen-hbsag-by-multiplex-immunochromatographic-rapid-test-with-serum-samples-a-cross-sectional-study
#8
Leman Robin, Ralph-Sydney Mboumba Bouassa, Zita Ayelo, Laura Charmant, Mathieu Matta, Sylvie Simon, Mounir Filali, Souleymane Mboup, Laurent Bélec
BACKGROUND: The HIV/HCV/HBsAg Triplex [OEM: Biotest Biotech Inc, Hangzhou, China] consists in manually performed, visually interpreted, lateral flow, immunochromatographic rapid diagnostic test simultaneously detecting in 15minutes human immunodeficiency virus (HIV)-1 and HIV-2 and hepatitis C virus (HCV)- specific antibodies (Ab) (IgG and IgM) and hepatitis B virus (HBV) surface antigen (HBsAg) in serum, plasma and whole blood. METHODS: A hospital-based cross-sectional study was conducted on a prospective panel of serum samples from adult inpatients included from routine analysis irrespectively of age and sex, including 250 sera positive for HIV-1-specific Ab, 250 for HCV-specific Ab, 250 for HBsAg and 250 sera negative for HIV- and HCV- Ab and HBsAg, and from 110 HIV-2-infected patients living in Ivory Coast, according to the results obtained by the reference chemiluminiscent microparticle immunoassay (CMIA) Abbott Architect i2000SR analyzer (Abbott Diagnostic, Chicago, IL, USA)...
December 2, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/29207830/assessment-of-pulp-oxygen-saturation-levels-by-pulse-oximetry-for-pulpal-diseases-a-diagnostic-study
#9
Bander Anusha, Koppolu Madhusudhana, Suneel Kumar Chinni, Yelloji Paramesh
Introduction: Diagnosis of pulpal inflammation is a key to endodontics. Pulse oximetry is a true vitality testing device which relies on oxygen saturation levels of pulp and helps in diagnosis of different pulpal conditions. Aim: The aim of the study was to analyse oxygen saturation levels of different pulpally inflamed teeth by using pulse oximetry. Materials and Methods: Hundred patients were included in the study and categorized into five groups based on pulpal status of the test tooth by using heat test and cold test...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29207805/benign-lesions-on-screening-mammography-increasing-diagnostic-confidence-in-a-hitherto-unscreened-population
#10
Piyush Joshi, Rohit Sharma
Introduction: Screening mammography is used for detection of breast cancer and is interpreted using the Breast Image Reporting and Data System (BIRADS) convention. It is not routinely offered to women in countries which do not have a national screening programme resulting in a challenge for the radiologist who has to interpret these in the absence of previous mammograms. Aim: To analyse benign and probably benign lesions in screening mammograms in a hitherto unscreened population and suggest protocols to increase diagnostic confidence...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29205997/who-would-benefit-from-exome-sequencing
#11
Janna Saarela, Kaisa Kettunen
Next-generation sequencing methods have revolutionized the possibilities for analyzing the human genome. Sequencing the exome, the protein-encoding portion of the genome, is used, in clinical medicine, especially in the diagnosis of rare hereditary diseases, congenital developmental disorders and cancer. Using exome sequencing as a diagnostic test is justified when the results could lead to an accurate diagnosis, significantly influence the treatment and genetic counseling. It is a reliable method for detecting single base mutations as minor deletions and insertions...
2017: Duodecim; Lääketieteellinen Aikakauskirja
https://www.readbyqxmd.com/read/29204488/false-negative-synovial-alpha-defensin
#12
Jake R Adams, Adam J Schwartz
We present a case of chronic periprosthetic hip infection diagnosed using the Musculoskeletal Infection Society criteria as the gold standard. The alpha-defensin test was falsely negative. The diagnostic workup of the patient is detailed, along with a discussion regarding the potential reasons behind the misleading alpha-defensin results. To our knowledge, this is the first reported case of a false-negative alpha-defensin test in the setting of an open sinus tract communicating with a culture-positive total hip implant...
December 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/29202799/routine-blood-tests-and-probability-of-cancer-in-patients-referred-with-non-specific-serious-symptoms-a-cohort-study
#13
Esben Næser, Henrik Møller, Ulrich Fredberg, Jan Frystyk, Peter Vedsted
BACKGROUND: Danish cancer patients have lower survival rates than patients in many other western countries. Half of the patients present with non-alarm symptoms and thus have a long diagnostic pathway. Consequently, an urgent referral pathway for patients with non-specific serious symptoms was implemented throughout Denmark in 2011-2012. As part of the diagnostic workup, a panel of blood tests are performed for all patients referred by their general practitioner (GP) to the urgent referral pathway...
December 4, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29197929/transdiagnostic-symptom-clusters-and-associations-with-brain-behavior-and-daily-function-in-mood-anxiety-and-trauma-disorders
#14
Katherine A Grisanzio, Andrea N Goldstein-Piekarski, Michelle Yuyun Wang, Abdullah P Rashed Ahmed, Zoe Samara, Leanne M Williams
Importance: The symptoms that define mood, anxiety, and trauma disorders are highly overlapping across disorders and heterogeneous within disorders. It is unknown whether coherent subtypes exist that span multiple diagnoses and are expressed functionally (in underlying cognition and brain function) and clinically (in daily function). The identification of cohesive subtypes would help disentangle the symptom overlap in our current diagnoses and serve as a tool for tailoring treatment choices...
December 3, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/29194106/increasing-authenticity-of-simulation-based-assessment-in-diagnostic-radiology
#15
Anouk van der Gijp, Cécile J Ravesloot, Corinne A Tipker, Kim de Crom, Dik R Rutgers, Marieke F van der Schaaf, Irene C van der Schaaf, Christian P Mol, Koen L Vincken, Olle Th J Ten Cate, Mario Maas, Jan P J van Schaik
INTRODUCTION: Clinical reasoning in diagnostic imaging professions is a complex skill that requires processing of visual information and image manipulation skills. We developed a digital simulation-based test method to increase authenticity of image interpretation skill assessment. METHODS: A digital application, allowing volumetric image viewing and manipulation, was used for three test administrations of the national Dutch Radiology Progress Test for residents...
November 29, 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29193737/laboratory-testing-in-patients-treated-with-direct-oral-anticoagulants-a-practical-guide-for-clinicians
#16
REVIEW
Jonathan Douxfils, Walter Ageno, Charles-Marc Samama, Sarah Lessire, Hugo Ten Cate, Peter Verhamme, Jean-Michel Dogné, François Mullier
One of the key benefits of the direct oral anticoagulants (DOACs) is that they do not require routine laboratory monitoring. Nevertheless, assessment of DOAC exposure and anticoagulant effects may become useful in various clinical scenarios. The four approved DOACs - apixaban, dabigatran etexilate, edoxaban and rivaroxaban - have different characteristics impacting assay selection and the interpretation of results. This article provides an updated overview on 1) which test to use (and their advantages and limitations), 2) when to assay DOAC levels, 3) how to interpret the results relating to bleeding risk, emergency situations and perioperative management, and 4) what is the impact of DOACs on routine and specialised coagulation assays...
November 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29189366/role-of-urine-drug-testing-in-the-current-opioid-epidemic
#17
Gagan Mahajan
While the evidence for urine drug testing for patients on chronic opioid therapy is weak, the guidelines created by numerous medical societies and state and federal regulatory agencies recommend that it be included as one of the tools used to monitor patients for compliance with chronic opioid therapy. To get the most comprehensive results, clinicians should order both an immunoassay screen and confirmatory urine drug test. The immunoassay screen, which can be performed as an in-office point-of-care test or as a laboratory-based test, is a cheap and convenient study to order...
December 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29187898/precisely-enumerating-circulating-tumor-cells-utilizing-a-multi-functional-microfluidic-chip-and-unique-image-interpretation-algorithm
#18
Mingxing Zhou, Hui Zheng, Zhaoba Wang, Ren Li, Xiaoran Liu, Weikai Zhang, Zihua Wang, Huiping Li, Zewen Wei, Zhiyuan Hu
Enumerating circulating tumor cells (CTCs) has been demonstrably useful in cancer treatment. Although there are several approaches that have proved effective in isolating CTC-like cells, the crucial identification of CTCs continues to rely on the manual interpretation of immunofluorescence images of all cells that have been isolated. This procedure is time consuming and more importantly, CTC identification relies on subjective criteria that may differ between examiners. In this study, we describe the design, testing, and verification of a microfluidic platform that provides accurate and automated CTC enumeration using a common objective criterion...
2017: Theranostics
https://www.readbyqxmd.com/read/29186446/validation-of-the-i-stat%C3%A2-1-analyzer-for-postmortem-vitreous-humor-electrolytes-and-glucose-analysis
#19
Laura R Monzon, Sue Pearring, Caitlin Miller, Jay R Vargas
The analytical value of vitreous humor as a specimen in postmortem forensic toxicology has been known for some time. Numerous medical examiner laboratories outsource the analysis of this important specimen for electrolyte and glucose measurements. This can be both time-consuming and costly. The utility of the i-STAT®1 medical device to measure electrolytes and glucose in whole blood samples has been demonstrated for over two decades in a clinical setting through single-use disposable cartridges that introduce samples to the i-STAT®1...
November 24, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29185894/student-perceptions-of-sectional-ct-mri-use-in-teaching-veterinary-anatomy-and-the-correlation-with-visual-spatial-ability-a-student-survey-and-mental-rotations-test
#20
Peter J Delisser, Darren Carwardine
Diagnostic imaging technology is becoming more advanced and widely available to veterinary patients with the growing popularity of veterinary-specific computed tomography (CT) and magnetic resonance imaging (MRI). Veterinary students must, therefore, be familiar with these technologies and understand the importance of sound anatomic knowledge for interpretation of the resultant images. Anatomy teaching relies heavily on visual perception of structures and their function. In addition, visual spatial ability (VSA) positively correlates with anatomy test scores...
November 29, 2017: Journal of Veterinary Medical Education
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